Page 404 - Maxwell House

384 Chapter 8

Chapter Contents

Introduction 385
8.1 IN-LINE RESONATORS 385 8.3.6 Butler Matrix (Beam
8.1.1 Outline 385 Forming Network) 408
8.1.2 Basics of In-line Resonator. 8.3.7 Monopulse Concept 409
Bounce Diagram 385 8.3.8 Radar Receiver
Protection 411
8.2 DIRECTIONAL COUPLES 8.3.9 Frequency Multiplexer 414
AND HYBRIDS 388
8.2.1 Introduction 388 8.4 ANALOGUE FILTERS 415
8.2.2 WR Discrete Directional 8.4.1 Overview 415
Coupler 389 8.4.2 Normalized Low-pass Filter.
8.2.3 Continuous Directional Frequency Transformation 416
Coupler 391 8.4.3 Filter Phase Characteristics.
8.2.4 WR Hybrids 394 Time Delay 418
8.2.5 WR Ring Hybrid 396 8.4.4 K - and J - Immittance
8.2.6 WR Short-Slot Hybrid Inverters 421
(Riblet Hybrid) 398 8.4.5 Quarter-Wavelength Section
8.2.7 Microstrip Branch Hybrid 400 of Feed Line as Inverter 422
8.2.8 Microstrip Ring Hybrid 402 8.4.6 Filters with Direct-Coupled
8.2.9 Wilkinson Power Divider 404 Resonators 423
8.4.7 Coupled Line and
8.3 DIRECTIONAL Distributed Filters 424
COUPLER AND HYBRID 8.4.8 Combline and Interdigital
APPLICATIONS 405 Filters 426
8.3.1 Signal Flow 8.4.9 Evanescent-Mode Filters 428
Measurements 405 8.4.10 Surface Acoustic Wave
8.3.2 Calibration and Test Units 406 (SAW) Filters 428
8.3.3 Power Leveling 406 8.4.11 Filter Selection Trade-off 432
8.3.4 Distributed Antenna 8.4.12 Optical Filters 432
System (DAS) 407
8.3.5 Power Combiner/Splitter REFERENCE 437
Networks 408