Ultrawide Band Antenna and Filter Design
Ultrawide Band Antenna and Filter Design
Ultrawide Band Antenna and Filter Design
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1<br />
Ansoft 2005 High Performance Applications Workshop<br />
Mike Tanahashi, TRDA Inc. / TAIYO YUDEN<br />
October 27, 2005<br />
Simulation <strong>Design</strong> Technologies<br />
of RF devices for UWB<br />
2005/11/3
Corporate Overview<br />
• Headquarters: Tokyo, Japan<br />
• Establishment: March 1950<br />
• Capital: 23.5 Billion JPY<br />
• Consolidated Sales: ¥163.3 billion<br />
• Employees: 17,193 (worldwide)<br />
• WW Sales Offices: 37<br />
• WW Production Base: 20<br />
• WW R&D Bases: 6<br />
Sales Amount (bill Yen)<br />
200<br />
150<br />
100<br />
2<br />
50<br />
0<br />
Revenue<br />
Consolidated Sales<br />
1978 1980 1985 1990 1995<br />
2000<br />
2004<br />
2005<br />
Confidential<br />
Optical Media<br />
19%<br />
Sales by Products (FY03/04)<br />
Module<br />
12%<br />
Others<br />
9%<br />
Ferrite<br />
20%<br />
Capacitor<br />
40%<br />
Sales by Application (FY03/04)<br />
Components<br />
20%<br />
Others<br />
20%<br />
Automotive<br />
3%<br />
Computers<br />
21%<br />
Consumer<br />
20%<br />
Telecomms<br />
16%<br />
2005/11/3
3<br />
TAIYO YUDEN SALES BY PRODUCT MIX<br />
Advanced Thin<br />
Film Technology<br />
CD-R<br />
DVD-R<br />
Advanced Module Technology<br />
Bluetooth Module<br />
Ceramic <strong>Antenna</strong><br />
Diplexer<br />
Multilayer<br />
Piezo Speaker<br />
B.P.F.<br />
CCFL Inverter<br />
19%<br />
16%<br />
FY2004<br />
(W/W Sales)<br />
4%<br />
Multilayer<br />
Products<br />
46 %<br />
19%<br />
41%<br />
Multilayer<br />
Chip<br />
Inductors<br />
Advanced Ferrite Technology<br />
EMC<br />
Products<br />
SMD<br />
Power<br />
Inductor<br />
Advanced Multilayer Technology<br />
Advanced Capacitor Technology<br />
BME MLCCs Array<br />
Wound<br />
Chip<br />
Inductor<br />
Axial &<br />
Radial<br />
Inductor<br />
Axial Leaded<br />
2005/11/3
Contents<br />
4<br />
・What’s UWB?<br />
・<strong>Antenna</strong> for UWB<br />
・<strong>Filter</strong> & balun for UWB<br />
・Future development<br />
2005/11/3
Various RF st<strong>and</strong>ards <strong>and</strong> position UWB technologies<br />
5<br />
Expected new usage <strong>and</strong> field for UWB<br />
WBAN* WPAN WLAN WMAN・WWAN WRAN<br />
1Gbps<br />
100Mbps<br />
10Mbps<br />
1Mbps<br />
100kbps<br />
RFID、<br />
NFC<br />
1m<br />
UWB<br />
High-Data-<br />
Rate WPAN<br />
802.15.3a<br />
NG BT<br />
NG Bluetooth<br />
Bluetooth<br />
ZigBee, 802.15.4a<br />
10m<br />
802.11n<br />
802.11a/g<br />
802.11b<br />
100m<br />
802.16<br />
WiMAX<br />
NG Cellular<br />
Phone<br />
Cellular<br />
Phone<br />
802.20<br />
1Km<br />
* “WBAN” (Wireless Body Area Network) has not been officially used by st<strong>and</strong>ardization organizations.<br />
802.22<br />
WiTV<br />
100km<br />
2005/11/3
What’s UWB?<br />
6<br />
Frequency b<strong>and</strong>width of UWB <strong>and</strong> other RF st<strong>and</strong>ards<br />
Transmission output level (image)<br />
cell phone<br />
cell phone<br />
802.11b<br />
802.11g<br />
Bluetooth<br />
Spread spectrum communication<br />
such as existing narrow-b<strong>and</strong><br />
communication or wireless LAN<br />
GPS<br />
802.11a<br />
1 2 3 4 5 6 7 8 9 10 11<br />
frequency(GHz)<br />
Ultra Wideb<strong>and</strong><br />
(UWB communication)<br />
EMI regulation value<br />
under US FCC<br />
(FCC Part15)<br />
(-41.3dBm/MHz)<br />
2005/11/3
What’s UWB?<br />
7<br />
FCC approved UWB EIRP Level<br />
H<strong>and</strong>held Indoor<br />
2005/11/3
What’s UWB?<br />
8<br />
Features of UWB<br />
・ high-speed transmission (110Mbps-480Mbps)<br />
- Deliver multiple HDTV video stream<br />
- Transmission of low compression, no<br />
compressible AV<br />
- Cable replacement of USB2.0<br />
・ lower power consumption (
UWB application<br />
9<br />
Home application<br />
Short range<br />
Connectivity<br />
high throughput<br />
wired & wireless<br />
Home Office<br />
Cluster<br />
Family PC<br />
Cluster<br />
Broadb<strong>and</strong><br />
Data/Voice<br />
Access<br />
Long Range<br />
Networking/Connectivity<br />
wired & wireless<br />
Phone<br />
Broadb<strong>and</strong><br />
Video/Data<br />
Access<br />
Audio<br />
Cluster<br />
Home Theater<br />
Cluster<br />
Gaming<br />
Cluster<br />
Control<br />
Adapted from MBOA strategy press<br />
briefing h<strong>and</strong>out<br />
2005/11/3
UWB application<br />
10<br />
Office application<br />
Office Desktop<br />
Connectivity<br />
Wired /<br />
Wireless<br />
Conference Room<br />
Connectivity (Ad<br />
Hoc)<br />
Wired / Wireless<br />
LAN Connectivity<br />
Wired/Wireless<br />
IEEE 802.11a/g & n<br />
IEEE 802.3 Ethernet<br />
Broadb<strong>and</strong><br />
Access<br />
Intra-Campus<br />
Connectivity (Ad Hoc)<br />
Wired/Wireless<br />
Adapted from MBOA strategy press<br />
briefing h<strong>and</strong>out<br />
2005/11/3
Taiyo Yuden’s UWB Devices<br />
11<br />
UWB circuit needs the following passive components.<br />
<strong>Antenna</strong><br />
BPF BEF<br />
Balun<br />
RF<br />
Chip<br />
Base<br />
<strong>B<strong>and</strong></strong><br />
+<br />
MAC<br />
RF devices particular to UWB technology.<br />
・ UWB <strong>Antenna</strong><br />
・ <strong>B<strong>and</strong></strong> Pass <strong>Filter</strong> (BPF)<br />
・ <strong>B<strong>and</strong></strong> Elimination <strong>Filter</strong> (BEF)<br />
・ UWB Balun<br />
IEEE1394<br />
USB2.0<br />
PCI<br />
. . . . .<br />
2005/11/3
12<br />
• What’s UWB?<br />
• <strong>Antenna</strong> for UWB<br />
• <strong>Filter</strong> & balun for UWB<br />
• Future development trend<br />
2005/11/3
13<br />
The basic of antenna input impedance <strong>and</strong> radiation resistance<br />
Input impedance Zi→If you see antenna as a circuit,<br />
it is circuit constant characteristics of antenna<br />
when you see antenna part from I/O port<br />
Zi=Rr+Rl+jX<br />
Radiation resistance Resistance loss reactance<br />
e.g. half-wave dipole antenna<br />
73.13Ω<br />
As it gets bigger, heat loss will be increasing,<br />
<strong>and</strong> radiation efficiency of an antenna will be<br />
decreasing.<br />
Radiation efficiency =<br />
Rr<br />
Rr+Rl<br />
As Rr gets small, Rl cannot be ignored<br />
2005/11/3
14<br />
The basic of antenna Gain, efficiency <strong>and</strong> directivity<br />
Spherical radiation<br />
Balloon becomes<br />
spherical<br />
0dBi<br />
Blow air 1 into antenna<br />
The spherical shape is radiation pattern<br />
What’s that<br />
making gain<br />
higher?<br />
If try to break balloon?<br />
The volume of blown air is constant<br />
Integration value of directional pattern =1<br />
<strong>Antenna</strong> efficiency 100%<br />
Unit of gain → dBi (i→isotropic)<br />
-α(dB)<br />
It means that isotropic antenna is st<strong>and</strong>ard antenna for gain<br />
measurement.<br />
This is the ideal antenna that radiates equally in all directions.<br />
1<br />
dBd<br />
dBic<br />
dBil<br />
+α(dB)<br />
2005/11/3
Variety <strong>and</strong> principle of basic antenna<br />
Distribution<br />
of voltage<br />
Distribution<br />
of electric<br />
current<br />
15<br />
r<br />
λ/4<br />
(97mm@3.1GHz)<br />
monopole antenna<br />
If it’s bigger than 1λ, it gets close to infinity characteristics.<br />
It is finite actually.<br />
Ground plane<br />
(infinite size)<br />
It becomes antenna when ground plane<br />
exists.<br />
Ground plane is also one of the important part of antenna.<br />
λ/4<br />
If it’s smaller than 1λ,<br />
especially less than λ/4,<br />
characteristics changes drastically.<br />
advantage→It has simple structure that just<br />
set up the λ/4 element on the<br />
ground.<br />
disadvantage→The efficiency depends on configuration<br />
of ground. It is not for low profile<br />
because it needs to set up element for<br />
defrag I/O impedance.<br />
2005/11/3
16<br />
Variety <strong>and</strong> principle of basic antenna<br />
inverted-F antenna<br />
Short element<br />
(thick part)<br />
aboutλ/4<br />
Low-profile monopole antenna<br />
As same as monopole antenna, it becomes antenna when<br />
ground plane existence. But because of low-profile<br />
element, the coupling with ground that is right under<br />
element becomes strong. Therefore the efficiency does<br />
not depend on configuration of ground or size.<br />
Short element correct lowering of<br />
I/O impedance.<br />
advantage→it is easy to control I/O<br />
impedance.<br />
disadvantage→frequency b<strong>and</strong>width<br />
Ground plane<br />
becomes narrower.<br />
2005/11/3
Variety <strong>and</strong> principle of basic antenna dipole antenna<br />
17<br />
λ/4 λ/4<br />
Ground part of monopole antenna<br />
changes to linear λ/4 in length<br />
Unlike monopole antenna, characteristics is<br />
stable because of independent structure.<br />
It is used as a st<strong>and</strong>ard reference antenna<br />
due to its certain characteristics.<br />
advantage→stable characteristics.<br />
can be use for st<strong>and</strong>ard antenna.<br />
disadvantage→total length becomesλ/2,<br />
so it gets big.<br />
difficult to miniaturize.<br />
2005/11/3
18<br />
Variety <strong>and</strong> principle of ultra wide b<strong>and</strong> antenna<br />
<strong>Antenna</strong> electric volume<br />
(b<strong>and</strong>width)×(gain)×(efficiency)<br />
=constant value<br />
widen b<strong>and</strong>width without changing gain <strong>and</strong> efficiency<br />
Trade-off<br />
must make antenna electric volume bigger<br />
2005/11/3
Variety <strong>and</strong> principle of ultra wide b<strong>and</strong> antenna<br />
self-complementary antenna<br />
19<br />
Z<br />
Z‘<br />
ZZ‘=<br />
Z0<br />
4<br />
2<br />
≒(60π) 2<br />
Figure out antenna impedance<br />
of antenna that complement each<br />
other by Babinet’s principle.<br />
(Booker’s relation)<br />
In addition, board <strong>and</strong> hole are<br />
the exactly same.<br />
Z=<br />
2<br />
Z0 =60π<br />
(Mushiake’s relation)<br />
It is constant regardless of frequency<br />
<strong>and</strong> configuration<br />
Self-complementary antenna<br />
2005/11/3
Variety <strong>and</strong> principle of ultra wide b<strong>and</strong> antenna<br />
log-periodic antenna<br />
20<br />
β<br />
α<br />
Although structure is self-complementary,<br />
it has wide b<strong>and</strong>width characteristics for<br />
infinite spread. Therefore in principle<br />
b<strong>and</strong>width characteristics is smaller than<br />
self-complementary antenna.<br />
It is practical structure than<br />
self-complementary antenna<br />
Its structure is that antenna characteristics<br />
repeat periodically in proportion to log of frequency.<br />
Invented by DuHamel in 1955<br />
α+β=90°→self-complementary condition<br />
Rn+1<br />
Rn =τ(constant)→ log-periodic condition<br />
Element that is L distance from feed point<br />
decide resonance frequency.<br />
Maximum dimension decide<br />
adjustment resonance frequency.<br />
Input impedance=189Ω<br />
When α=45°τ=0.5, b<strong>and</strong>width is 5:1<br />
2005/11/3
Variety <strong>and</strong> principle of ultra wide b<strong>and</strong> antenna<br />
log-periodic dipole array antenna<br />
21<br />
L1<br />
α<br />
Feed line<br />
(feed with phase inversion)<br />
L2<br />
Approximately L1 decide minimum limit<br />
of resonance frequency. And L2 decide<br />
Guided wave area<br />
maximum limit of resonance frequency.<br />
Radiation area Example of design:α=10°、L1=63.5mm<br />
element number=15、L2=31.8mm<br />
Reflection area<br />
Each working area moves over<br />
by changing of frequency.<br />
b<strong>and</strong>width→1.1GHz~1.9GHz(less than VSWR2)<br />
gain →+8~+11dBi(Peak)<br />
2005/11/3
Variety <strong>and</strong> principle of ultra wide b<strong>and</strong> antenna discone antenna<br />
A<br />
22<br />
B<br />
Φ<br />
D<br />
disc<br />
conical<br />
feed line<br />
As thicken conductor diameter of dipole antenna,<br />
input impedance of antenna is improved.<br />
Widen b<strong>and</strong>width<br />
One part of dipole antenna is disc<br />
<strong>and</strong> the other parts are conical in shape.<br />
It feeds with coaxial cable.<br />
Example of design<br />
Minimum usage frequency fc=200MHz<br />
when D=230mm<br />
A=310mm<br />
B=350mm<br />
VSWR is less than 1.5 at 200~1000MHz<br />
2005/11/3
Variety <strong>and</strong> principle of ultra wide b<strong>and</strong> antenna<br />
spiral antenna (circular polarization antenna)<br />
23<br />
Archimedean spiral antenna Conical spiral antenna Quad line conical spiral antenna<br />
Electric wave radiate vertical<br />
direction to spiral plane.<br />
Input impedance 150~170Ω<br />
Stable frequency<br />
Axial direction<br />
excitation<br />
Side<br />
directional<br />
excitation<br />
can change direction to axial or side<br />
by the way of excitation of 4 lines.<br />
advantage: stable characteristics for wide b<strong>and</strong>width as circular polarization antenna<br />
disadvantage: need feeder circuit (ultra wide b<strong>and</strong> balun) for antenna structure<br />
2005/11/3
Variety <strong>and</strong> principle of ultra wide b<strong>and</strong> antenna<br />
double ridge horn antenna (directional antenna)<br />
24<br />
200<br />
150<br />
245<br />
Wide b<strong>and</strong>width by double ridge structure<br />
1~18GHz → less than VSWR3<br />
gain → +4.5dBi(@1GHz)<br />
~+14dBi(@16GHz)<br />
Used for transmitting antenna of antenna measurement<br />
2005/11/3
Evaluation of antenna characteristics<br />
25<br />
<strong>Antenna</strong><br />
under test<br />
VSWR<br />
(Voltage St<strong>and</strong>ing Wave Ratio)<br />
Network analyzer<br />
Important reminder for test<br />
・when you test antenna, it radiates electric wave. So set antenna up away<br />
from metal or human body etc. for unaffected.<br />
2005/11/3
Evaluation of antenna characteristics<br />
26<br />
Absolute gain<br />
2.15dBi<br />
St<strong>and</strong>ard dipole<br />
antenna<br />
<strong>Antenna</strong> under test<br />
<strong>Antenna</strong> under test<br />
Anechoic<br />
chamber<br />
Quiet Zone<br />
Turn table<br />
Transmitting horn antenna<br />
NETWORK ANALIZER<br />
gain <strong>and</strong><br />
radiation pattern<br />
Electric wave<br />
absorber were<br />
put on all six<br />
sides<br />
2005/11/3
Evaluation of antenna characteristics<br />
gain <strong>and</strong> radiation pattern<br />
27<br />
St<strong>and</strong>ard antenna<br />
e.g. St<strong>and</strong>ard dipole antenna<br />
Prs(dBm)<br />
Gs(dBi)<br />
Pt(dBm)<br />
Anechoic chamber<br />
Transmitting antenna<br />
e.g. Double ridge horn antenna Measured antenna Transmitting antenna<br />
e.g. Double ridge horn antenna<br />
Prt(dBm)<br />
Gain Gt=Prt-Prs+Gs<br />
rotate measurementΦ=270°<br />
antenna <strong>and</strong> plot Gt<br />
Radiation pattern<br />
Gt(dBi)<br />
rotation φ<br />
Φ=0°<br />
Φ=180°<br />
Gain(dBi)<br />
Pt(dBm)<br />
Φ=90°<br />
2005/11/3
28<br />
Evaluation of antenna characteristics efficiency<br />
3D radiation pattern by antenna near field measurement system<br />
31 sensors<br />
rotation<br />
antenna under test<br />
Measuring antenna efficiency<br />
Integration value of 3D<br />
Radiation pattern<br />
is the antenna efficiency.<br />
2005/11/3
Evaluation of antenna characteristics group delay<br />
Anechoic<br />
chamber<br />
29<br />
RF-Amp<br />
UWB<br />
antenna<br />
measure delay of<br />
S21 characteristics<br />
double ridge horn antenna<br />
Example of measurement<br />
2005/11/3
Comparison of simulation values of UWB antenna<br />
analysis model<br />
30<br />
Z<br />
Y<br />
ground<br />
<strong>Antenna</strong> element<br />
X<br />
Producing condition close to<br />
measurement environment<br />
Full-featured CAD, takes about 30<br />
minutes to make model<br />
For improvement of accuracy of analysis<br />
GND affects antenna characteristics <strong>and</strong> we<br />
generate fine mesh manually on GND in<br />
advance.<br />
2005/11/3
31<br />
Comparison of simulation values of UWB antenna<br />
VSWR<br />
cable<br />
Cable used for measurement<br />
may affect.<br />
Actual measurement result<br />
Simulation<br />
result<br />
Almost congruent under<br />
no practical issue.<br />
2005/11/3
Comparison of simulation values of UWB antenna<br />
32<br />
antenna efficiency<br />
Actual measurement<br />
result<br />
<strong>Antenna</strong> efficiency was measured by STARGATE in Taiyo Yuden.<br />
Almost congruent under<br />
no practical issue.<br />
Simulation result<br />
antenna efficiencyantenna efficiency<br />
For the feature of antenna that used for measurement,<br />
the difference between measurement <strong>and</strong> simulation<br />
may be error.<br />
31 sensors<br />
rotation<br />
AUT<br />
2005/11/3
33<br />
Comparison of simulation values of UWB antenna<br />
radiation pattern(3.1GHz)<br />
2005/11/3
34<br />
Comparison of simulation values of UWB antenna<br />
radiation pattern(4.0GHz)<br />
2005/11/3
Comparison of simulation values of UWB antenna<br />
35<br />
radiation pattern(5.0GHz)<br />
2005/11/3
36<br />
Comparison of simulation values of UWB antenna<br />
radiation pattern(6.5GHz)<br />
2005/11/3
Comparison of simulation values of UWB antenna<br />
37<br />
radiation pattern(7.5GHz)<br />
2005/11/3
38<br />
Application of simulation of UWB antenna<br />
field intensity<br />
3.1GHz<br />
4GHz 5GHz<br />
6.5GHz 7.5GHz<br />
2005/11/3
<strong>Antenna</strong> characteristics used for UWB system<br />
39<br />
frequency b<strong>and</strong>width<br />
gain <strong>and</strong> directivity<br />
Base station<br />
Intended specific<br />
direction<br />
Directional antenna<br />
(≒10dBi)<br />
3.1GHz ~ 10.6GHz<br />
will change by application used in<br />
specific communication systems<br />
Intended wide<br />
direction<br />
Within horizontal plane<br />
Omni directional antenna<br />
(≒3dBi)<br />
Mobile station(mobile terminal etc.)<br />
Unsettled condition (direction)<br />
of equipment<br />
Spherical directional pattern<br />
(≒0dBi)<br />
2005/11/3
UWB <strong>Antenna</strong><br />
40<br />
Shapes & dimensions<br />
VSWR<br />
8 x 6 x 1mm<br />
VSWR<br />
7<br />
6<br />
5<br />
4<br />
3<br />
2<br />
1<br />
2 3 4 5 6 7 8 9 10 11 12<br />
Frequency (GHz)<br />
Features<br />
� lower VSWR<br />
� flat gain<br />
� flat group delay<br />
� compact<br />
� lower cost<br />
� omni directional<br />
� 50Ωimpedance<br />
UWB antenna needs to transmit <strong>and</strong><br />
receive signal for wide b<strong>and</strong>width.<br />
2005/11/3
Contents<br />
41<br />
• What’s UWB?<br />
• <strong>Antenna</strong> for UWB<br />
• <strong>Filter</strong> & balun for UWB<br />
• Future development<br />
2005/11/3
<strong>Design</strong> for Strip line type <strong>Filter</strong><br />
42<br />
Basic design<br />
Wave shortening design<br />
≒<br />
L<br />
L C L C<br />
C<br />
=<br />
4 f<br />
0<br />
ε<br />
r<br />
・the length of strip line decide frequency<br />
・dielectric constant material can make resonator shorter<br />
Cs<br />
f<br />
1<br />
=<br />
2π<br />
LC<br />
1<br />
f '=<br />
2π<br />
L(C+<br />
Cs)<br />
・possible to miniaturize by parallel<br />
capacitance with strip line<br />
2005/11/3
<strong>Design</strong> for Strip line type <strong>Filter</strong><br />
43<br />
Trap design<br />
3rd<br />
1st trap<br />
trap<br />
2nd<br />
trap<br />
1st resonator 2nd resonator 3rd resonator<br />
・possible to make trap by circuit structure<br />
[dB]<br />
0<br />
-10<br />
-20<br />
-30<br />
-40<br />
-50<br />
-60<br />
-70<br />
-80<br />
-90<br />
-100<br />
2000 7000<br />
freq.[MHz]<br />
12000<br />
2005/11/3
<strong>Design</strong> for Strip line type Balun<br />
44<br />
L<br />
Unbalance Port<br />
C<br />
=<br />
4 f<br />
0<br />
ε<br />
r<br />
Balance Port<br />
λ/4 Resonator<br />
Main electric characteristics<br />
-Balance Impedance<br />
-Insertion loss at pass b<strong>and</strong><br />
-Phase balance<br />
-Amplitude balance<br />
・the length of strip line decide frequency<br />
・dielectric constant material can make resonator shorter<br />
・coupling of λ/4 resonator decide b<strong>and</strong>width<br />
2005/11/3
Required performance of RF device for UWB<br />
10dB<br />
45<br />
BW(-10dB b<strong>and</strong> width) ≧ 1/5 fc<br />
or more than 500MHz b<strong>and</strong> width<br />
Transmitting output<br />
BW<br />
fc<br />
frequency<br />
need to satisfy electric<br />
characteristics of filter <strong>and</strong><br />
balun with wide b<strong>and</strong>width<br />
<br />
<strong>Filter</strong><br />
Balun<br />
-Insertion loss at pass b<strong>and</strong><br />
-Insertion loss at pass b<strong>and</strong><br />
-Phase imbalance<br />
-Amplitude imbalance<br />
2005/11/3
Importance of simulation technologies<br />
46<br />
traditional :Cut & Try<br />
Circuit Simulation CAD<br />
present:Simulation<br />
HFSS Simulation<br />
Specification<br />
arrangement<br />
trial<br />
3-5 rotation<br />
trial evaluation MP<br />
evaluation<br />
MP<br />
Specification<br />
arrangement<br />
Short lead time<br />
Save cost<br />
2005/11/3
Evaluation Method<br />
47<br />
Measurement outline<br />
N.W.A<br />
DUT<br />
Method<br />
Cancel of jig loss<br />
De-embedded<br />
Merit<br />
Easy to get attenuation<br />
characteristics<br />
S-parameter data available<br />
After calibrate with cable terminal <strong>and</strong> measure<br />
S-Parameter of filter with board or SMA<br />
connector, cancel board or SMA connector then<br />
derive only filter characteristics.<br />
Demerit<br />
No S-parameter data<br />
2005/11/3
Comparison of simulation <strong>and</strong> actual measurement<br />
value<br />
48<br />
Comparison by through jig<br />
Transmission characteristics of<br />
S11 <strong>and</strong> S21is congruent.<br />
But・・・<br />
Develop into a gap in<br />
Smith’s chart!<br />
Cannot be used as S-Parameter!<br />
-<br />
-<br />
-<br />
-<br />
Actual<br />
measurement_S11<br />
Actual<br />
measurement_S21<br />
simulation_S33<br />
simulation_S43<br />
2005/11/3
Comparison of simulation <strong>and</strong> actual measurement<br />
value<br />
49<br />
De-embedding method<br />
Example of structure for De-embedding<br />
Port1 Port2<br />
Actual measurement data<br />
before De-embedding<br />
Port2<br />
Simulation result of above<br />
Port1<br />
Simulation result of DUT only<br />
comparison<br />
Re-create SMA by HFSS<br />
2005/11/3
Comparison of simulation <strong>and</strong> actual measurement<br />
value<br />
50<br />
Comparison by De-embedding<br />
Simulation value <strong>and</strong> actual<br />
measurement value is congruent<br />
including Smith’s chart.<br />
-<br />
-<br />
-<br />
-<br />
Actual<br />
measurement_S11<br />
Actual<br />
measurement_S21<br />
simulation_S33<br />
simulation_S43<br />
2005/11/3
Comparison of simulation <strong>and</strong> actual measurement<br />
value<br />
51<br />
Comparison by Balun(De-embedding)<br />
As same as BPF, simulation <strong>and</strong> actual<br />
measurement is congruent by De-embedding.<br />
Pass/Attenuation Amplitude imbalance Phase imbalance<br />
2005/11/3
UWB-<strong>B<strong>and</strong></strong> Pass <strong>Filter</strong> (BPF)<br />
52<br />
Shapes & dimensions<br />
2.0 x 1.25 x 1.0mm(Max)<br />
Electric characteristicss<br />
S11/S21(dB)<br />
0<br />
-10<br />
-20<br />
-30<br />
-40<br />
-50<br />
S11<br />
S21<br />
1000 2000 3000 4000 5000 6000<br />
Freq(MHz)<br />
Features<br />
� Lower insertion loss <strong>and</strong> higher attenuation<br />
� Suitable for the first generation UWB chip set<br />
(3-5GHz)<br />
� Smaller size<br />
� Lower cost<br />
� 50Ω- input/output<br />
BPF prevents UWB from interfering with mobile phones,<br />
GPS, 2.4GHz or 5GHz-Wireless LAN System <strong>and</strong> also<br />
prevents these applications from interfering with UWB.<br />
2005/11/3
UWB-<strong>B<strong>and</strong></strong> Elimination <strong>Filter</strong> (BEF)<br />
53<br />
Shapes & dimensions<br />
6.3 x 3.0 x 1.1mm(Max)<br />
Electric characteristicss<br />
Features<br />
� Lower insertion loss <strong>and</strong> higher attenuation at 5GHz<br />
� Smaller size<br />
�50Ω- input/output<br />
BEF is essential, for the b<strong>and</strong>widths of<br />
5GHz Wireless LAN <strong>and</strong> UWB are close.<br />
It is not enough in attenuation to use only<br />
BPF.<br />
2005/11/3
UWB-Balun<br />
54<br />
Shapes & dimensions<br />
3.2 x 2.5 x 1.0mm(Max)<br />
Electric characteristicss<br />
Loss (dB)<br />
0<br />
-5<br />
-10<br />
-15<br />
-20<br />
-25<br />
-30<br />
-35<br />
-40<br />
Transmission<br />
Features<br />
1 2 3 4 5 6 7 8 9<br />
Frequency (GHz)<br />
� Lower phase error <strong>and</strong> lower amplitude error<br />
� Lower insertion loss<br />
� Suitable for the first <strong>and</strong> second generation UWB<br />
chipsets<br />
� 50:100Ω-impedance<br />
Return Loss<br />
Insertion Loss<br />
Balun is essential for unbalance (unbalance, single-end) -<br />
balance (balance, differential) signal conversion.<br />
Amplitude (dB)<br />
3<br />
2<br />
1<br />
0<br />
-1<br />
-2<br />
-3<br />
Imbalance<br />
Amplitude<br />
Phase<br />
1 2 3 4 5 6 7 8 9<br />
Frequency (GHz)<br />
15<br />
10<br />
5<br />
0<br />
-5<br />
-10<br />
-15<br />
Phase (deg)<br />
2005/11/3
UWB-Balun<br />
55<br />
Shapes & dimensions<br />
2.0 x 1.25x 0.9mm<br />
Electric characteristicss<br />
Loss<br />
0<br />
-5<br />
-10<br />
-15<br />
-20<br />
-25<br />
-30<br />
Freqency Response<br />
Features<br />
� Lower phase error <strong>and</strong> lower amplitude error<br />
� Lower insertion loss<br />
�Smaller size & Lower cost<br />
� 50:100Ω-impedance<br />
Return Loss<br />
Insertion Loss<br />
3.0 3.5 4.0 4.5 5.0<br />
Frequency<br />
Balun is essential for unbalance (unbalance, single-end) -<br />
balance (balance, differential) signal conversion.<br />
AmplitudeImbalance(dB)<br />
2.5<br />
2.0<br />
1.5<br />
1.0<br />
0.5<br />
0.0<br />
-0.5<br />
-1.0<br />
-1.5<br />
-2.0<br />
-2.5<br />
Freqency Response<br />
Amplitude Imbalance<br />
Phase Imbalance<br />
3.0 3.5 4.0 4.5 5.0<br />
Frequency (GHz)<br />
10<br />
8<br />
6<br />
4<br />
2<br />
0<br />
-2<br />
-4<br />
-6<br />
-8<br />
-10<br />
Phase Imbalance (deg)<br />
2005/11/3
Contents<br />
56<br />
• What’s UWB?<br />
• <strong>Antenna</strong> for UWB<br />
• <strong>Filter</strong> & balun for UWB<br />
• Future development<br />
2005/11/3
<strong>Antenna</strong> line up<br />
57<br />
Wide <strong>B<strong>and</strong></strong> <strong>Antenna</strong><br />
Inverted F <strong>Antenna</strong><br />
Dual <strong>B<strong>and</strong></strong> <strong>Antenna</strong><br />
Helical <strong>Antenna</strong><br />
2.4GHz<br />
5GHz<br />
500MHz 1GHz 2GHz 5GHz<br />
Bluetooth<br />
W-LAN 11b/g<br />
3~10GHz<br />
W-LAN 11a<br />
W-LAN 11a/b/g<br />
GPS<br />
UWB<br />
Inverted F<br />
Monopole<br />
Inverted F<br />
Monopole<br />
Dual b<strong>and</strong><br />
8x3x1mm 10x4x1mm 12x2x1mm<br />
2.5x1.6x1.6mm<br />
4x2x0.8mm<br />
11x1.6x1.6mm<br />
Proto<br />
10x4x1mm<br />
NEW<br />
2005/11/3
<strong>Filter</strong> & Balun line up<br />
58<br />
SL type <strong>Filter</strong><br />
Balun<br />
Balance <strong>Filter</strong><br />
LC type <strong>Filter</strong><br />
2.4GHz<br />
5GHz<br />
500MHz 1GHz 2GHz 5GHz<br />
Bluetooth<br />
W-LAN 11b/g<br />
1.7~5GHz<br />
W-LAN 11a<br />
Digital TV<br />
UWB<br />
BPF<br />
Balance<br />
BPF<br />
BPF<br />
LPF<br />
Balance<br />
BPF<br />
BPF<br />
2.5x2.0x1.0max<br />
2.0x1.25x1.0max<br />
2.0x1.25x1.0max<br />
2.0x1.25x1.0max<br />
2.0x1.25x1.0max<br />
Under Development<br />
2.0x1.25x1.0max<br />
MP 2005.8~<br />
MP 2005.10~<br />
Under Development<br />
Balun<br />
Under Development<br />
2005/11/3
Total solution for TAIYO YUDEN’s UWB<br />
59<br />
Providing Total UWB Ecosystem<br />
RF Passive Components<br />
Total solution<br />
<strong>Antenna</strong> & support Certification Services Module<br />
IC/Firmware/Software<br />
UWB Products<br />
USB Dongle<br />
ExpressCard<br />
Collaboration<br />
Quick introduction to<br />
the market<br />
2005/11/3
Contact information<br />
60<br />
For US/EU <strong>and</strong> other regions :<br />
Mike Tanahashi<br />
TRDA Inc.<br />
Taiyo Yuden R&D Center of America<br />
email: mtanahashi@trda-inc.com<br />
For Asia : NOBUAKI SAITO<br />
Products Planning Division<br />
Marketing Headquarters<br />
JAPAN Taiyo Yuden<br />
email: nsaito@jty.yuden.co.jp<br />
Hiroshi Homma<br />
Overseas Sales Division<br />
JAPAN Taiyo Yuden<br />
email: h-homma@jty.yuden.co.jp<br />
2005/11/3
61<br />
Thank you for your attention.<br />
2005/11/3
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