Modern Electronic Communication 9th edition Jeffrey S. Beasley and Gary M. Miller Copyright ©2008 by Pearson Education, Inc. Upper Saddle River, New Jersey.

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Modern Electronic Communication 9th edition Jeffrey S. Beasley and Gary M. Miller Copyright ©2008 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Figure 7-1 Double-conversion block diagram.

Modern Electronic Communication 9th edition Jeffrey S. Beasley and Gary M. Miller Copyright ©2008 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Figure 7-2 Image frequency rejection.

Modern Electronic Communication 9th edition Jeffrey S. Beasley and Gary M. Miller Copyright ©2008 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Figure 7-3 System for Example 7-2.

Modern Electronic Communication 9th edition Jeffrey S. Beasley and Gary M. Miller Copyright ©2008 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Figure 7-4 Up-conversion system.

Modern Electronic Communication 9th edition Jeffrey S. Beasley and Gary M. Miller Copyright ©2008 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Figure 7-5 AGC characteristics.

Modern Electronic Communication 9th edition Jeffrey S. Beasley and Gary M. Miller Copyright ©2008 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Figure 7-6 Delayed AGC configuration.

Modern Electronic Communication 9th edition Jeffrey S. Beasley and Gary M. Miller Copyright ©2008 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Figure 7-7 (a) Auxiliary AGC; (b) the Analog Devices AD8369 variable gain amplifier IC;

Modern Electronic Communication 9th edition Jeffrey S. Beasley and Gary M. Miller Copyright ©2008 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Figure 7-7 (continued) (a) Auxiliary AGC; (b) the Analog Devices AD8369 variable gain amplifier IC;

Modern Electronic Communication 9th edition Jeffrey S. Beasley and Gary M. Miller Copyright ©2008 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Figure 7-7 (continued) (c) Basic connections.

Modern Electronic Communication 9th edition Jeffrey S. Beasley and Gary M. Miller Copyright ©2008 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Figure 7-8 Variable bandwidth tuning (VBT).

Modern Electronic Communication 9th edition Jeffrey S. Beasley and Gary M. Miller Copyright ©2008 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Figure 7-9 Automatic noise limiter.

Modern Electronic Communication 9th edition Jeffrey S. Beasley and Gary M. Miller Copyright ©2008 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Figure 7-10 Squelch circuit.

Modern Electronic Communication 9th edition Jeffrey S. Beasley and Gary M. Miller Copyright ©2008 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Figure 7-11 Third-order intercept and compression point illustration.

Modern Electronic Communication 9th edition Jeffrey S. Beasley and Gary M. Miller Copyright ©2008 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Figure 7-12 IMD products (second-, third-, and fifth-order for two test signals).

Modern Electronic Communication 9th edition Jeffrey S. Beasley and Gary M. Miller Copyright ©2008 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Figure 7-13 IMD testing: (a) mixer; (b) Class AB linear power amplifier.

Modern Electronic Communication 9th edition Jeffrey S. Beasley and Gary M. Miller Copyright ©2008 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Figure 7-14 Basic frequency synthesizer.

Modern Electronic Communication 9th edition Jeffrey S. Beasley and Gary M. Miller Copyright ©2008 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Figure 7-15 Typical programmable divider.

Modern Electronic Communication 9th edition Jeffrey S. Beasley and Gary M. Miller Copyright ©2008 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Figure 7-16 Synthesizer alternatives.

Modern Electronic Communication 9th edition Jeffrey S. Beasley and Gary M. Miller Copyright ©2008 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Figure 7-17 Divider system with two-modulus prescaler.

Modern Electronic Communication 9th edition Jeffrey S. Beasley and Gary M. Miller Copyright ©2008 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Figure 7-18 The Cobra 19 DX IV CB radio. (Courtesy of Cobra Electronics Corporation.)

Modern Electronic Communication 9th edition Jeffrey S. Beasley and Gary M. Miller Copyright ©2008 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Figure 7-19 CB synthesizer circuit.

Modern Electronic Communication 9th edition Jeffrey S. Beasley and Gary M. Miller Copyright ©2008 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Figure 7-20 Printed circuit board details: (a) printed circuit layout for CB synthesizer; (b) component layout for CB synthesizer.

Modern Electronic Communication 9th edition Jeffrey S. Beasley and Gary M. Miller Copyright ©2008 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Figure 7-21 UCR110 block diagram. (Courtesy of Lectrosonics, Inc.)

Modern Electronic Communication 9th edition Jeffrey S. Beasley and Gary M. Miller Copyright ©2008 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Figure 7-22 The schematic of a UHF multifrequency receiver. (Courtesy of Lectrosonics, Inc.)

Modern Electronic Communication 9th edition Jeffrey S. Beasley and Gary M. Miller Copyright ©2008 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Figure 7-23 DDS block diagram.

Modern Electronic Communication 9th edition Jeffrey S. Beasley and Gary M. Miller Copyright ©2008 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Figure 7-24 The resistor at high frequencies.

Modern Electronic Communication 9th edition Jeffrey S. Beasley and Gary M. Miller Copyright ©2008 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Figure 7-25 The ZAS-3 attenuator. (Courtesy of Mini-Circuits  :

Modern Electronic Communication 9th edition Jeffrey S. Beasley and Gary M. Miller Copyright ©2008 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Figure 7-26 The connections for the ZAS-3 attenuator when used as an AM modulator.

Modern Electronic Communication 9th edition Jeffrey S. Beasley and Gary M. Miller Copyright ©2008 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Figure 7-27 The suggested biasing for the ZAS-3 control port. (Courtesy of Mini-Circuits  :

Modern Electronic Communication 9th edition Jeffrey S. Beasley and Gary M. Miller Copyright ©2008 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Figure 7-28 The Mini-Circuits ZX voltage controlled oscillator. (Courtesy of Mini-Circuits  :

Modern Electronic Communication 9th edition Jeffrey S. Beasley and Gary M. Miller Copyright ©2008 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Figure 7-29 The suggested connection diagram for using the ZX for generating an FM signal. (Courtesy of Mini- Circuits  :

Modern Electronic Communication 9th edition Jeffrey S. Beasley and Gary M. Miller Copyright ©2008 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Figure 7-30 The Mini-Circuits  ZP-3 mixer circuit. (Courtesy of Mini-Circuits  :

Modern Electronic Communication 9th edition Jeffrey S. Beasley and Gary M. Miller Copyright ©2008 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Figure 7-31 The suggested connection diagram for the ZP-3.

Modern Electronic Communication 9th edition Jeffrey S. Beasley and Gary M. Miller Copyright ©2008 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Figure 7-32 Block diagram of a mobile FM transceiver, transmitter portion.

Modern Electronic Communication 9th edition Jeffrey S. Beasley and Gary M. Miller Copyright ©2008 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Figure 7-33 The mixer circuit as implemented with Multisim.

Modern Electronic Communication 9th edition Jeffrey S. Beasley and Gary M. Miller Copyright ©2008 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Figure 7-34 The output of the mixer as viewed with an oscilloscope. The input frequencies to the mixer are 20 and 21 MHz.

Modern Electronic Communication 9th edition Jeffrey S. Beasley and Gary M. Miller Copyright ©2008 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Figure 7-35 The output of the mixer as viewed by a spectrum analyzer.

Modern Electronic Communication 9th edition Jeffrey S. Beasley and Gary M. Miller Copyright ©2008 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Figure 7-36 An example of a squelch circuit as implemented with Multisim.