10-2018
Fachzeitschrift für Hochfrequenz- und Mikrowellentechnik
Fachzeitschrift für Hochfrequenz- und Mikrowellentechnik
Erfolgreiche ePaper selbst erstellen
Machen Sie aus Ihren PDF Publikationen ein blätterbares Flipbook mit unserer einzigartigen Google optimierten e-Paper Software.
RF & Wireless<br />
Four Section<br />
Colinear<br />
Antenna<br />
RFMW, Ltd. announced<br />
design and sales support<br />
for a Southwest<br />
Antennas’ omnidirectional<br />
antennas. Designed<br />
to support DOD/<br />
Government L-band<br />
radios operating from<br />
1.35 to 1.39 GHz,<br />
the <strong>10</strong>87-071 collinear<br />
antenna offers 6<br />
dBi of peak gain. This<br />
19.75 inch antenna has a flange<br />
mount base with lock-wired<br />
screws and an integrated sealed<br />
spring making it safe for vibrating<br />
platforms such as vehicles<br />
and reducing the risk of damage<br />
to the mated RF connector. The<br />
weatherproof seal provides protection<br />
in harsh operating conditions.<br />
Capable of handling<br />
up to 50W of input power, the<br />
<strong>10</strong>87-071 standard connector is<br />
Type-N female.<br />
■ RFMW, Ltd.<br />
www.rfmw.com<br />
Broadband Low PIM<br />
Attenuators 50 Watts<br />
MECA offers Broad Band<br />
Low PIM Attenuators <strong>10</strong>0 watt<br />
models with a typical PIM spec<br />
of -161 dBc. Featuring 4.1/9.5,<br />
7/16, N and 4.3/<strong>10</strong>.0 DIN interfaces<br />
with custom in-between<br />
styles also available upon<br />
request. Covering 600 MHz<br />
through 4 GHz. While handling<br />
full rated power to 85 °C with<br />
no derating. Made in USA and<br />
36-month warranty.<br />
■ MECA Electronics, Inc<br />
www.e-meca.com<br />
Broadband 2-Way<br />
Resistive Power<br />
Splitter<br />
MECA Electronics’ latest new<br />
product offering 2-way broadband<br />
Resistive Power Splitters<br />
covering DC-18 GHz (802-3-<br />
9.000) and DC-26.5 GHz (802-<br />
3-13.250) encompassing VHS<br />
thru X & Ku bands. With typical<br />
performance of: SWR 1.3, Insertion<br />
Loss 1.5 dB and exceptional<br />
Amplitude & Phase Balance<br />
of 1 dB & 4 degrees max. Made<br />
in the USA, 36 month warranty.<br />
■ MECA Electronics, Inc<br />
www.e-meca.com<br />
Broad Band Low PIM<br />
Attenuators <strong>10</strong>0 Watts<br />
MECA offers Broad Band Low<br />
PIM Attenuators 50 watt models<br />
with a Typical PIM spec of -161<br />
dBc. Featuring 4.1/9.5, 7/16, N<br />
and 4.3/<strong>10</strong>.0 DIN interfaces with<br />
custom in-between styles also<br />
available upon request. Covering<br />
600 MHz through 4 GHz.<br />
While handling full rated power<br />
to 85 °C with no derating. Made<br />
in USA and 36-month warranty.<br />
■ MECA Electronics, Inc<br />
www.e-meca.com<br />
Broadband 6-Way<br />
SMA Power Divider<br />
MECA Electronics’ latest product<br />
offering, non-binary 6-way<br />
broadband of Power Divider<br />
covering 0.5 to 6 GHz (803-<br />
9-Way Radial Combiner for Radar<br />
Link Microtek has designed<br />
and produced a compact highpower<br />
9-way radial combiner<br />
specifically for BAE Systems<br />
as part of a programme to<br />
upgrade customers’ S-band<br />
radar transmitters by replacing<br />
their magnetrons with multiple<br />
solid-state power amplifiers<br />
(SSPAs).<br />
Typically, the SSPAs are individual<br />
blades housed within a<br />
19in cabinet, and their outputs<br />
need to be combined then fed<br />
via waveguide to the radar’s<br />
large rotating antenna; it is this<br />
function that the special 9-way<br />
combiner performs.<br />
According to Link Microtek’s<br />
managing director, Steve<br />
Cranstone, there were several<br />
challenges involved in the<br />
design of the special combiner:<br />
“Firstly, the device had to be<br />
able to handle extremely high<br />
microwave power and be sufficiently<br />
small to fit comfortably<br />
at the back of an SSPA<br />
cabinet.”<br />
In addition to meeting these<br />
specifications, there was another<br />
crucial consideration.<br />
One of the main reasons for<br />
2-3.250WWP) encompassing<br />
Public Safety through ISM<br />
bands. With typical performance<br />
of: SWR 1.3, Isolation<br />
17 dB, Insertion Loss 1.5 dB<br />
and exceptional Amplitude &<br />
Phase Balance of 1.5 dB & 15<br />
degrees max. This is in addition<br />
upgrading radar transmitters<br />
with SSPA technology is to<br />
introduce a degree of fault<br />
tolerance into the system.<br />
Another advantage of the<br />
resonant-cavity design is its<br />
compact size compared with<br />
other types of combiner. The<br />
9-way device, with its impressive<br />
peak power capability,<br />
measures just 194 mm in diameter<br />
and has a depth of only<br />
58 mm, excluding the N-type<br />
input connectors and WR284<br />
waveguide output. In terms of<br />
microwave performance, the<br />
combiner achieves a SWR of<br />
1.4 (maximum), an insertion<br />
loss of less than 0.5 dB and<br />
a peak input power rating of<br />
2.5 kW.<br />
To complement the combiner,<br />
Link Microtek also designed<br />
and produced a special 50 dB<br />
S-band WR284 coupler for<br />
monitoring the microwave<br />
power at the combiner’s output.<br />
Both parts are fabricated<br />
from aluminium with a satin<br />
black finish.<br />
■ Link Microtek, Ltd.<br />
sales@linkmicrotek.com<br />
www.linkmicrotek.com<br />
to the family of 2, 3, 4, 8 & 16<br />
way splitters in various connector<br />
styles and IP60 & 67/68<br />
ratings. Made in the USA & 36<br />
month warranty.<br />
■ MECA Electronics, Inc<br />
www.e-meca.com<br />
hf-praxis <strong>10</strong>/<strong>2018</strong> 87
Change language