Waveguide Junction Circulators: Theory and Practice

ISBN-13: 9780471982524 / Angielski / Twarda / 1998 / 554 str.

J. Helszajn

Opis

The waveguide junction circulator is a microwave circuit used in antennae in mobile cellular telephones, radars, satellites and all navigational systems, filters, resistance amplifiers and other microwave equipment.

Spis treści

Preface ix

1 Architecture of Symmetrical Waveguide Junction Circulators 1

2 Scattering Matrix of m–Port Circulator 23

3 Eigenvalue Adjustment pf 3–Port Circulator 39

4 Impedance Matrix of Junction Circulator 57

5 The Post Gyromagnetic Resonator 77

6 Okada Resonator 89

7 Isotropic, Anisotropic and Gyromagnetic Circular Waveguides 109

8 Isotropic, Anisotropic Open Circular Wavelengths 139

9 The Dialectric Cavity Resonator 155

10 The Gyromagnetic Cavity Resonator 179

11 Impedance in Rectangular, Ridge and Radial Waveguides 199

12 Junction Circular Using Post Resonators 229

13 Complex Gyrator Circuit of a Waveguide Junction Circulator using an Okada Resonator 255

14 Degree–1 and 2 Okada Circulators 279

15 An Evanescent Mode Okada Junction Circulator 297

16 Complex Gyrator Circuit of an H–Plane Junction Circulator using an Okada Resonator 311

17 Complex Gyrator Circuit of an Evanescent–Mode E–Plane Junction Circulator using H–Plane Turnstile Resonators 339

18 Waveguide Circulators using Triangular and Prism Resonators 359

19 Synthesis of Quarter–Wave Coupled Junction Circulators with Degrees 1 and 2 Complex Gyrator Circuits 379

20 The 4–Port Single Junction Waveguide Circulator 399

21 Microwave Switching using Junction Circulators 431

22 Insertion Loss of Waveguide Circulators 431

23 Synthesis of Stepped Impedance Transducers 445

24 Experimental Evaluation of Junction Circulators 471

25 Circulator Specifications 489

26 Gyromagnetic Effect in Magnetic Insulator 511

Index 537

Blurb

Waveguide Junction Circulators brings together for the first time all the design aspects of this class of device. In a typical application the circulator allows a single antenna to be used for both transmission and reception. Together with semiconductor, passive and electronic devices, the circulator constitutes an essential building block in modern radar, satellite and telecommunication equipment. Features include:
∗ Examination of the properties and adjustments of the 3–port junction circulator and focus on the gyromagnetic resonator
∗ Description of the design of practical classic circulator arrangements
∗ Discussion of aspects of filter theory in the design of the classic 3–port junction circulator
∗ Consideration of practical concerns such as insertion loss and commercial specifications
Written by a leading academic authority and experienced industrial consultant, Waveguide Junction Circulators is a vital information source for designers working in microwave engineering. This valuable guide provides the academic researcher with a firm foundation in the theoretical aspects of this class of device whilst offering the industrial engineer an experimental platform for commercial design.