Radio Frequency Integrated Circuit Design - Webs

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LNA Design Figure 6.26 Plot of fundamental and third-order products coming out of an exponential nonlinearity. Figure 6.27 Input-output transfer function and time domain voltage and current waveforms. With A = 70.71 mV, the shift is 1mA 4 � (25 mV) 2 (2 � 70.71 mV2 ) = 4.0 mA Thus, the waveform is centered on 5 mA. 177
178 Radio Frequency Integrated Circuit Design Because of positive coefficient k 3, the waveform is not compressed but expanded. However, either way, compression or expansion, the result is distortion. The above calculations all assume R C is small enough so that the transistor does not saturate. If saturation does occur, the power series is no longer valid. Typically, inputs would not be allowed to be bigger than about 10 dB below IP3, which for this example is about 22.34 mV. Figure 6.28 shows the transfer function for an input of this amplitude. At this level, current goes from 0.409 to 2.444 mA. The dc shift is 0.4 mA, so current is about 1.4 ± 1.01 mA. Example 6.12 Linearity Calculations in Common-Emitter Amplifier with Degeneration Continue the previous example by determining the effect of emitter degeneration. For an input of two sine waves of amplitude A 1 and A 2 compute the IIP3 point for R E = 0�, 5�, 10�, 15�, and 20�. Again, assume that I CA = 1mA and v T = 25 mV. Solution To determine IP3, two tones can be applied at various amplitudes and graphical extrapolations made of the fundamental and third-order tones, as previously illustrated in Figure 6.26. Instead, for this example, values for k 0, k 1, k 2, and k 3 are determined from the equations in Table 6.1. Then these are used to calculate the fundamental and third-order intermodulation (IM3) components from the equations in Table 6.2, and IIP3 is calculated from the given fundamental and third-order terms similar to that discussed in Section 2.3.2. A IIP3 = 10 log� 2 2 × 50 × 1mW� =−50 + 10 log�Fundamental |IM3| � Figure 6.28 Transistor characteristic for smaller input signal. 1 Fundamental + × 20 log� 2 |IM3| �
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Radio Frequency Integrated Circuit
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Radio Frequency Integrated Circuit
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Contents Foreword xv Acknowledgment
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Contents 3.8 Base Shot Noise Discus
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Contents 5.25 Packaging 135 5.25.1
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Contents 7.12 General Design Commen
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Contents 9.5 Some Simple Image Reje
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Foreword I enjoyed reading this boo
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Foreword estimates of parasitic cap
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xx Radio Frequency Integrated Circu
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2 Radio Frequency Integrated Circui
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2 Issues in RFIC Design, Noise, Lin
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Issues in RFIC Design, Noise, Linea
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The input noise is Issues in RFIC D
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2.5 Filtering Issues Issues in RFIC
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3 A Brief Review of Technology 3.1
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A Brief Review of Technology IC = I
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3.4 Small-Signal Model A Brief Revi
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3.6 High-Frequency Effects A Brief
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A Brief Review of Technology If thi
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A Brief Review of Technology Soluti
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A Brief Review of Technology 3.8 Ba
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A Brief Review of Technology • Pi
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A Brief Review of Technology 3.16,
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A Brief Review of Technology The tr
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4 Impedance Matching 4.1 Introducti
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Impedance Matching Z 2 = Z in + j
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Figure 4.5 A Smith chart. Impedance
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4.3 Impedance Matching Impedance Ma
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Impedance Matching Figure 4.9 Which
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Impedance Matching Figure 4.11 Lowp
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Impedance Matching section, convers
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Impedance Matching Much as in the p
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Impedance Matching Note that dots i
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Impedance Matching Thus, in the fir
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Impedance Matching The exact resist
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Impedance Matching 4.10 Quality Fac
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Impedance Matching Example 4.7 Matc
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Impedance Matching line to change w
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Impedance Matching S22 = b 2 a2 | a
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Impedance Matching without the need
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96 Radio Frequency Integrated Circu
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98 Radio Frequency Integrated Circu
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100 Radio Frequency Integrated Circ
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Voltage-Controlled Oscillators back
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I C_AVE = 1 Voltage-Controlled Osci
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Voltage-Controlled Oscillators Loop
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Voltage-Controlled Oscillators freq
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Voltage-Controlled Oscillators Figu
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Voltage-Controlled Oscillators from
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Voltage-Controlled Oscillators [10]
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10 Power Amplifiers 10.1 Introducti
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Power Amplifiers where G is the pow
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Power Amplifiers Figure 10.4 Optima
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Power Amplifiers Figure 10.8 Power
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Power Amplifiers Figure 10.9 Curren
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Power Amplifiers The efficiency is
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Power Amplifiers sinusoid), this pe
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Power Amplifiers Note that this agr
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Power Amplifiers stabilization. The
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Power Amplifiers Solution The first
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Power Amplifiers Figure 10.22 Class
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Figure 10.24 Class E waveforms. Pow
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Power Amplifiers B = 0.1836 0.81Q R
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Power Amplifiers Figure 10.25 Initi
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Power Amplifiers added to the funda
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Power Amplifiers 10.8.1 Variation o
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Example 10.4 Class F Power Amplifie
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Figure 10.36 Class H amplifier. Pow
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Power Amplifiers ered quite good. O
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Power Amplifiers Figure 10.39 Time-
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Figure 10.42 High-Q matching circui
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Figure 10.44 Multiple transistors.
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Power Amplifiers Figure 10.48 Combi
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Power Amplifiers have very narrow b
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Power Amplifiers Figure 10.53 Feedf
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Power Amplifiers in class A (input
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About the Authors John Rogers recei
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Index 1-dB compression point, 30-32
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Index Damped resonator, 247-48 Emit
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Index Local oscillator, 5 Mixing co
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Index Quadrature phase shift keying
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