Newnes Guide to Radio and Communications Technology

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Ian Poole has written a fascinating guide to the technology and applications of modern radio and communications equipment. His approach provides a useful foundation for college students and technicians seeking an update on the latest technology, but each topic is introduced from the basics, ensuring that the book is equally rewarding for managers in the communications industry, sales staff, and anyone seeking to update their knowledge of this exciting and rapidly expanding area of technology.

Author(s): Poole I.
Year: 2003

Language: English
Pages: 297

front cover......Page 1
copyright......Page 5
table of contents......Page 6
Preface......Page 8
1 An introduction to radio......Page 10
The story of radio......Page 12
Radio tomorrow......Page 24
Electric fields......Page 26
Magnetic fields......Page 28
Radio waves......Page 29
Frequency to wavelength conversion......Page 30
Radio spectrum......Page 31
Polarization......Page 33
How radio signals travel......Page 34
Refraction, reflection and diffraction......Page 35
Reflected signals......Page 38
Layers above the earth......Page 39
Ground wave......Page 43
Skywaves......Page 44
Distances and the angle of radiation......Page 46
Multiple reflections......Page 47
MUF......Page 49
State of the ionosphere......Page 50
Fading......Page 51
Ionospheric disturbances......Page 52
Very low frequency propagation......Page 53
Greater distances......Page 54
Troposcatter......Page 55
Sporadic E......Page 56
Meteor scatter......Page 57
Frequencies above 3GHz......Page 59
Radio carrier......Page 60
Morse......Page 61
Amplitude modulation......Page 62
Single sideband......Page 66
Frequency modulation......Page 67
Sidebands......Page 69
Pre-emphasis and de-emphasis......Page 70
Frequency shift keying......Page 71
Phase modulation......Page 72
Minimum shift keying......Page 73
Pulse modulation......Page 76
Frequency hopping......Page 80
Direct sequence spread spectrum......Page 81
Summary3......Page 84
Resonance and bandwidth......Page 85
Impedance......Page 87
Gain and directivity......Page 88
Bandwidth......Page 91
Angle of radiation......Page 92
Feeder......Page 93
Standing waves......Page 94
Velocity factor......Page 98
Coaxial feeder......Page 99
Balanced feeder......Page 101
Waveguide......Page 102
Types of antenna......Page 103
Dipole......Page 104
Phased arrays......Page 108
Yagi......Page 110
Discone......Page 113
Log periodic......Page 114
Vertical antenna......Page 116
Short antennas......Page 118
Parabolic reflector......Page 119
Ferrite rod antennas......Page 121
Loop antennas......Page 122
Active antenna......Page 123
Practical aspects of installing antennas......Page 124
Materials for antennas......Page 125
Safety......Page 127
5 Receivers......Page 128
Crystal set......Page 129
TRF receiver......Page 130
Direct conversion receiver......Page 132
The superhet......Page 136
Basic superhet receiver......Page 139
Overcoming image response problems......Page 140
Multiple conversion sets......Page 141
Automatic gain control......Page 142
Synthesizers......Page 144
Multi-loop synthesizers......Page 149
Direct digital synthesizers......Page 150
RF amplifier and mixer......Page 153
Local oscillator......Page 155
IF amplifier and filter......Page 157
Demodulation......Page 160
SSB and Morse demodulation......Page 161
FM demodulation......Page 162
Digital signal processing (DSP)......Page 171
IF breakthrough......Page 172
Phase noise and reciprocal mixing......Page 173
Filters......Page 174
Selectivity and filters......Page 175
Sensitivity and noise......Page 178
Signal to noise ratio......Page 180
SINAD......Page 181
Noise factor and noise figure......Page 182
Strong signal and overload......Page 183
Intermodulation distortion......Page 184
Third order intercept......Page 185
Dynamic range......Page 186
Oscillator......Page 188
Mixers......Page 190
Amplifiers......Page 191
Filters and matching networks......Page 197
Intermodulation......Page 200
Output impedance......Page 202
Simple Morse transmitter......Page 203
Amplitude modulation transmitter......Page 204
Single sideband transmitter......Page 205
Frequency modulation transmitter......Page 208
AM broadcasts......Page 213
Stereo......Page 216
RDS......Page 220
Digital radio (digital audio broadcasting Ò DAB)......Page 224
8 Satellites......Page 230
Satellite orbits......Page 231
Satellites......Page 234
Placing a satellite in orbit......Page 237
Path calculations......Page 238
Communications satellites......Page 240
Navigational satellites......Page 244
Weather and observation satellites......Page 245
9 Private mobile radio......Page 247
Local private mobile radio......Page 248
Trunked PMR......Page 249
TETRA......Page 252
Evolution......Page 256
Basic standards......Page 258
Basic concepts......Page 263
Transmissions both ways......Page 265
Mobile phones......Page 266
Base station......Page 267
Infrastructure......Page 269
Control......Page 270
Analogue systems......Page 271
GSM......Page 272
GPRS and EDGE......Page 277
cdmaOne......Page 278
CDMA2000......Page 282
W-CDMA......Page 284
Cell breathing......Page 288
TD-SCDMA......Page 289
Fourth generation......Page 290
11 Short-range wireless data communications......Page 291
Bluetooth......Page 292
IEEE 802.11......Page 294
HomeRF SWAP......Page 298
index......Page 300