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Summary
Summary
David Pozar, author of Microwave Engineering, Second Edition, has written a new text that introduces students to the field of wireless communications. This text offers a quantitative and, design-oriented presentation of the analog RF aspects of modern wireless telecommunications and data transmission systems from the antenna to the baseband level. Other topics include noise, intermodulation, dynamic range, system aspects of antennas and filter design.
This unique text takes an integrated approach to topics usually offered in a variety of separate courses on topics such as antennas and proagation, microwave systems and circuits, and communication systems. This approach allows for a complete presentation of wireless telecommunications systems designs.
The author's goal with this text is for the student to be able to analyze a complete radio system from the transmitter through the receiver front-end, and quantitatively evaluate factors.
Suitable for a one-semester course, at the senior or first year graduate level. Note certain sections have been denoted as advanced topics, suitable for graduate level courses.
Author Notes
David Pozar is a professor of electrical and computer engineering at the University of Massachusetts at Amherst, where he has worked since 1980. Pozar has written numerous books on the topic of microwave engineering such as Microwave Engineering (1997) and Antenna Design Using Personal Computers (1985).
Pozar attended the University of Akron, earning both a BS and an MS in Electrical Engineering. He received his Ph.D. in Electrical Engineering from The Ohio State University in 1980. He is active in the IEEE Association and has won several awards from them for outstanding contributions. He has also received an outstanding senior faculty award and a R.W.P. King Best Paper award, among others.
An active speaker at trade meetings worldwide, Pozar is also interested in fine woodworking and has created reproductions of antique furniture. He is married and has two children.
(Bowker Author Biography)
Table of Contents
1 Introduction to Wireless Systems | p. 1 |
1.1 Wireless Systems and Markets | p. 2 |
Classification of Wireless Systems | p. 2 |
Cellular Telephone Systems | p. 3 |
Personal Communications Systems | p. 5 |
Satellite Systems for Wireless Voice and Data | p. 6 |
Global Positioning Satellite System | p. 7 |
Wireless Local Area Networks | p. 9 |
Other Wirless Systems | p. 9 |
1.2 Design and Performance Issues | p. 11 |
Choice of Operating Frequency | p. 12 |
Multiple Access and Duplexing | p. 13 |
Circuit Switching versus Packet Switching | p. 13 |
Propagation | p. 14 |
Radiated Power and Safety | p. 15 |
Other Issues | p. 16 |
1.3 Introduction to Wireless System Components | p. 16 |
Basic Radio System | p. 17 |
Antennas | p. 19 |
Filters | p. 19 |
Amplifiers | p. 21 |
Mixers | p. 22 |
Oscillators | p. 22 |
Baseband Processing | p. 23 |
1.4 Cellular Telephone Systems and Standards | p. 23 |
Cellular and the Public Switched Telephone Network | p. 23 |
AMPS Cellular Telephone System | p. 24 |
Digital Personal Communications System Standards | p. 26 |
2 Transmission Lines and Microwave Networks | p. 29 |
2.1 Transmission Lines | p. 29 |
Lumped Element Model for a Transmission Line | p. 30 |
Wave Propagation on a Transmission Line | p. 31 |
Lossless Transmission Lines | p. 32 |
Terminated Transmission Lines | p. 33 |
Special Cases of Terminated Transmission Lines | p. 36 |
Generator and Load Mismatches | p. 39 |
2.2 The Smith Chart | p. 41 |
Derivation of the Smith Chart | p. 42 |
Basic Smith Chart Operations | p. 44 |
Using The Admittance Smith Chart | p. 45 |
2.3 Microwave Network Analysis | p. 47 |
Impedance and Admittance Matrices | p. 47 |
The Scattering Matrix | p. 50 |
The Transmission (ABCD) Matrix | p. 53 |
2.4 Impedance Matching | p. 55 |
The Quarter-Wave Transformer | p. 56 |
Matching Using L-Sections | p. 58 |
Single-Stub Tuning | p. 61 |
3 Noise and Distortion in Microwave Systems | p. 68 |
3.1 Review of Random Processes | p. 69 |
Probability and Random Variables | p. 69 |
The Cumulative Distribution Function | p. 69 |
The Probability Density Function | p. 70 |
Some Important Probability Density Functions | p. 71 |
Expected Values | p. 71 |
Autocorrelation and Power Spectral Density | p. 72 |
3.2 Thermal Noise | p. 74 |
Noise Voltage and Power | p. 74 |
3.3 Noise in Linear Systems | p. 77 |
Autocorrelation and Power Spectral Density in Linear Systems | p. 77 |
Gaussian White Noise through an Ideal Low-pass Filter | p. 78 |
Gaussian White Noise through an Ideal Integrator | p. 79 |
Mixing of Noise | p. 80 |
Narrowband Representation of Noise | p. 81 |
3.4 Basic Threshold Detection | p. 83 |
Probability of Error | p. 84 |
3.5 Noise Temperature and Noise Figure | p. 87 |
Equivalent Noise Temperature | p. 87 |
Measurement of Noise Temperature | p. 88 |
Noise Figure | p. 89 |
Noise Figure of a Lossy Line | p. 90 |
Noise Figure of Cascaded Components | p. 91 |
3.6 Noise Figure of Passive Networks | p. 93 |
Noise Figure of a Passive Two-port Network | p. 94 |
Application to a Mismatched Lossy Line | p. 95 |
Application to a Wilkinson Power Divider | p. 96 |
3.7 Dynamic Range and Intermodulation Distortion | p. 98 |
Gain Compression | p. 99 |
Intermodulation Distortion | p. 100 |
Third-Order Intercept Point | p. 101 |
Dynamic Range | p. 102 |
Intercept Point of Cascaded Components | p. 104 |
Passive Intermodulation | p. 106 |
4 Antennas and Propagation for Wireless Systems | p. 111 |
4.1 Antenna System Parameters | p. 111 |
Fields and Power Radiated by an Antenna | p. 112 |
Far-Field Distance | p. 114 |
Radiation Intensity | p. 114 |
Radiation Patterns | p. 115 |
Directivity | p. 116 |
Radiation Efficiency | p. 117 |
Gain | p. 118 |
Aperture Efficiency | p. 118 |
Effective Area | p. 118 |
Antenna Polarization | p. 119 |
4.2 The Friis Equation | p. 120 |
The Friis Equation | p. 120 |
Effective Isotropic Radiated Power | p. 121 |
Impedance Mismatch | p. 122 |
Polarization Mismatch | p. 123 |
Equivalent Circuits for Transmit and Receive Antennas | p. 124 |
4.3 Antenna Noise Temperature | p. 125 |
Background and Brightness Temperature | p. 125 |
Antenna Noise Temperature | p. 127 |
G/T | p. 129 |
4.4 Basic Practical Antennas | p. 131 |
Electrically Small Dipole Antenna | p. 132 |
Half-Wave Dipole Antenna | p. 134 |
Monopole Antenna | p. 135 |
Sleeve Monopole Antenna | p. 136 |
Electrically Small Loop Antenna | p. 137 |
4.5 Propagation | p. 138 |
Free-space Propagation | p. 139 |
Ground Reflections | p. 140 |
Path Loss for Ground Reflections | p. 142 |
Realistic Path Loss | p. 142 |
Attenuation | p. 143 |
4.6 Fading | p. 144 |
Rayleigh Fading | p. 145 |
5 Filters | p. 151 |
5.1 Filter Design by the Insertion Loss Method | p. 152 |
Characterization by Power Loss Ratio | p. 152 |
Maximally Flat Low-Pass Filter Prototype | p. 154 |
Equal-Ripple Low-Pass Filter Prototype | p. 157 |
Linear Phase Low-Pass Filter Prototype | p. 158 |
5.2 Filter Scaling and Transformation | p. 158 |
Impedance Scaling | p. 158 |
Frequency scaling for low-pass filters | p. 159 |
Low-pass to High-pass Transformation | p. 162 |
Bandpass and Bandstop Transformation | p. 164 |
5.3 Low-Pass and High-Pass Filters Using Transmission Line Stubs | p. 168 |
Richard's Transformation | p. 168 |
Kuroda's Identities | p. 169 |
5.4 Stepped-Impedance Low-Pass Filters | p. 173 |
Approximate Equivalent Circuits for Short Transmission Line Sections | p. 174 |
5.5 Bandpass Filters Using Transmission Line Resonators | p. 178 |
Impedance and Admittance Inverters | p. 178 |
Bandpass Filters Using Quarter-Wave Coupled Quarter-Wave Resonators | p. 179 |
Bandpass Filters Using Capacitively Coupled Quarter-Wave Resonators | p. 183 |
6 Amplifiers | p. 189 |
6.1 FET and Bipolar Transistor Models | p. 190 |
Field Effect Transistors | p. 190 |
Bipolar Transistors | p. 192 |
6.2 Two-port Power Gains | p. 194 |
Definitions of Two-Port Power Gains | p. 194 |
Special Cases | p. 197 |
Further Discussion of Two-Port Power Gains | p. 198 |
6.3 Stability | p. 199 |
Stability Circles | p. 200 |
Tests for Unconditional Stability | p. 202 |
6.4 Amplifier Design Using S Parameters | p. 205 |
Design for Maximum Gain | p. 205 |
Maximum Stable Gain | p. 207 |
Constant Gain Circles and Design for Specified Gain | p. 210 |
6.5 Low-noise Amplifier Design | p. 214 |
6.6 Power Amplifiers | p. 218 |
Characteristics of Power Amplifiers and Amplifier Classes | p. 218 |
Large-Signal Characterization of Transistors | p. 219 |
Design of Class A Power Amplifiers | p. 221 |
7 Mixers | p. 225 |
7.1 Mixer Characteristics | p. 225 |
Frequency Conversion | p. 225 |
Image Frequency | p. 227 |
Conversion Loss | p. 228 |
Noise Figure | p. 229 |
Intermodulation Distortion | p. 230 |
Isolation | p. 230 |
7.2 Diode Mixers | p. 230 |
Small-Signal Diode Characteristics | p. 231 |
Single-Ended Mixer | p. 232 |
Large-Signal Model | p. 233 |
Switching Model | p. 237 |
7.3 FET Mixers | p. 239 |
Single-Ended FET Mixer | p. 239 |
Other FET Mixers | p. 242 |
7.4 Other Mixer Circuits | p. 243 |
Balanced Mixers | p. 243 |
Small-Signal Analysis of the Balanced Mixer | p. 245 |
Image Reject Mixer | p. 246 |
8 Transistor Oscillators and Frequency Synthesizers | p. 250 |
8.1 Radio Frequency Oscillators | p. 251 |
General Analysis | p. 251 |
Oscillators Using a Common Emitter BJT | p. 252 |
Oscillators Using a Common Gate FET | p. 254 |
Practical Considerations | p. 255 |
Crystal Oscillators | p. 256 |
Voltage-Controlled Oscillators | p. 258 |
8.2 Microwave Oscillators | p. 258 |
Negative Resistance Oscillators | p. 259 |
Transistor Oscillators | p. 261 |
Dielectric Resonator Oscillators | p. 264 |
8.3 Frequency Synthesis Methods | p. 268 |
Direct Synthesis | p. 268 |
Digital Look-up Synthesis | p. 269 |
Phase-Locked Loops | p. 271 |
Practical Synthesizer Circuits | p. 272 |
Fractional-N Phase-Locked Loops | p. 273 |
8.4 Phase-Locked Loop Analysis | p. 273 |
Phase Detectors | p. 274 |
Transfer Function for the Voltage-Controlled Oscillator | p. 275 |
Analysis of Linearized Phase-Locked Loop | p. 275 |
First-Order Loop | p. 277 |
Second-Order Loop | p. 278 |
8.5 Oscillator Phase Noise | p. 280 |
Representation of Phase Noise | p. 281 |
Leeson's Model for Oscillator Phase Noise | p. 282 |
Effect of Phase Noise on Receiver Performance | p. 285 |
9 Modulation Techniques | p. 288 |
9.1 Analog Modulation | p. 288 |
Single-Sideband Modulation | p. 289 |
Double-Sideband Suppressed-Carrier Modulation | p. 292 |
Double-Sideband Large-Carrier Modulation | p. 295 |
Envelope Detection of Double-Sideband Modulation | p. 296 |
Frequency Modulation | p. 298 |
9.2 Binary Digital Modulation | p. 303 |
Binary Signals | p. 304 |
Amplitude Shift Keying | p. 304 |
Frequency Shift Keying | p. 306 |
Phase Shift Keying | p. 307 |
Carrier Synchronization | p. 309 |
9.3 Error Probabilities for Binary Modulation | p. 309 |
PCM Signals and Detectors | p. 310 |
Synchronous ASK | p. 311 |
Synchronous PSK | p. 312 |
Synchronous FSK | p. 313 |
Envelope Detection of ASK | p. 313 |
Envelope Detection of FSK | p. 316 |
Bit Rate and Bandwidth Efficiency | p. 317 |
Comparison of ASK, FSK, and PSK Systems | p. 318 |
9.4 Effect of Rayleigh Fading on Bit Error Rates | p. 320 |
Effect of Rayleigh Fading on Coherent PSK | p. 321 |
Effect of Rayleigh Fading on Noncoherent FSK | p. 322 |
Comparison of Faded and Nonfaded Error Rates | p. 322 |
9.5 M-ary Digital Modulation | p. 324 |
Quadrature Phase Shift Keying | p. 325 |
Probability of Error for QPSK | p. 327 |
M-ary Phase Shift Keying | p. 330 |
Quadrature Amplitude Modulation | p. 330 |
Channel Capacity | p. 331 |
10 Receiver Design | p. 335 |
10.1 Receiver Architectures | p. 335 |
Receiver Requirements | p. 335 |
Tuned Radio Frequency Receiver | p. 337 |
Direct Conversion Receiver | p. 337 |
Superheterodyne Receiver | p. 338 |
Duplexing | p. 338 |
10.2 Dynamic Range | p. 340 |
Minimum Detectable Signal | p. 341 |
Sensitivity | p. 343 |
Dynamic Range | p. 343 |
Automatic Gain Control | p. 344 |
Compression and Third-order Intermodulation | p. 346 |
10.3 Frequency Conversion and Filtering | p. 347 |
Selection of IF Frequency | p. 347 |
Filtering | p. 348 |
Spurious-free Range | p. 348 |
10.4 Examples of Practical Receivers | p. 350 |
FM Broadcast Receiver | p. 350 |
Digital Cellular Receiver | p. 351 |
Millimeter Wave Point-to-Point Radio Receiver | p. 352 |
Direct-Conversion GSM Receiver | p. 355 |
Appendices | p. 357 |
A Wireless System Frequency Bands | p. 358 |
B Useful Mathematical Results | p. 358 |
C Fourier and Laplace Transforms | p. 359 |
D The Complementary Error Function | p. 360 |
E Chebyshev Polynomials | p. 361 |
F Decibels and Nepers | p. 362 |
Index | p. 363 |