The ridge waveguide, which is a rectangular waveguide with one or more metal inserts (ridges), is an important transmission line in microwave engineering, now widely used in commercial electronics and communications devices. This book collects together much of the work of Professor Helszajn, an international authority in the field, and will enable the reader to have direct access to this important work without need for exhaustive search of research papers. Generously illustrated, it is likely to become the definitive reference source on this topic.Also available: Propagation of Short Radio Waves - ISBN 9780863410994 Waveguide Handbook - ISBN 9780863410581The Institution of Engineering and Technology is one of the world's leading professional societies for the engineering and technology community. The IET publishes more than 100 new titles every year; a rich mix of books, journals and magazines with a back catalogue of more than 350 books in 18 different subject areas including: -Power & Energy -Renewable Energy -Radar, Sonar & Navigation -Electromagnetics -Electrical Measurement -History of Technology -Technology Management
Author(s): J. Helszajn
Year: 2001
Language: English
Pages: 352
Contents......Page 8
Preface......Page 14
1.2 Cut-off space of ridge waveguide......Page 16
1.3 Impedance of ridge waveguide......Page 18
1.4 Attenuation of ridge waveguide......Page 19
1.5 Ridge waveguide junctions......Page 20
1.6 Waveguide transitions......Page 25
1.8 Turnstile junction circulator......Page 26
2.2 The wave equation......Page 28
2.3 Dominant mode in rectangular waveguides......Page 29
2.4 Impedance in waveguides......Page 30
2.5 Power transmission through rectangular waveguides......Page 32
2.6 Impedance in rectangular waveguides......Page 33
2.7 Circular polarisation in rectangular waveguides......Page 34
2.8 Calculation of impedance based on a mathematical technique......Page 37
2.9 Orthogonal properties of waveguide modes......Page 39
3.2 Cut-off space of ridge waveguide......Page 41
3.4 Voltage-current definition of impedance in ridge waveguide......Page 46
3.5 Power-voltage definition of impedance in ridge waveguide......Page 47
3.6 Power-current definition of impedance in ridge waveguide......Page 48
3.7 Admittances of double ridge waveguide......Page 49
3.8 Closed form polynomials for single and double ridge waveguides......Page 50
3.9 Synthesis of quarter-wave ridge transformers......Page 53
4.2 Finite element calculation (TE modes)......Page 62
4.4 Cut-off space (TE mode)......Page 65
4.5 Standing wave solution in double ridge waveguide......Page 67
4.6 TE fields in double ridge waveguide......Page 69
4.7 TM fields in double ridge waveguide......Page 71
4.8 MFIE......Page 74
4.10 Attenuation in waveguides......Page 76
5.1 Introduction......Page 78
5.2 Voltage-current definition of impedance......Page 79
5.3 Calculation of voltage-current definition of impedance......Page 81
5.4 Power-current and power-voltage definitions of impedance......Page 82
5.5 Impedance of ridge waveguide using trapezoidal ribs......Page 86
6.1 Introduction......Page 88
6.2 Cut-off space of single ridge waveguide......Page 89
6.3 Fields in single ridge waveguide......Page 90
6.4 Impedance of single ridge waveguide......Page 93
6.5 Insertion loss in single ridge waveguide......Page 94
6.6 Higher order modes......Page 95
7.1 Introduction......Page 98
7.2 Hybrid functional......Page 99
7.3 Cut-off space of dielectric loaded rectangular ridge waveguide......Page 103
7.4 Propagation constant in dielectric loaded rectangular ridge waveguide......Page 105
7.5 Propagation constant in dielectric loaded square waveguide......Page 106
7.6 Voltage-current definition of impedance......Page 107
8.1 Introduction......Page 114
8.3 Open half-space of asymmetrically dielectric loaded ridge waveguide......Page 115
8.4 Circular polarisation in dielectric-loaded parallel plate waveguides with open side-walls......Page 117
8.5 Circular polarisation in dielectric loaded ridge waveguide......Page 120
8.6 Circular polarisation in homogeneous ridge waveguide......Page 122
9.2 Quadruple ridge waveguide......Page 132
9.3 Cut-off space in quadruple ridge waveguide using MFIE method......Page 134
9.5 Cut-off space of quadruple ridge waveguide using FEM......Page 136
9.6 Fields in quadruple ridge waveguide......Page 141
9.7 Cut-off space of dielectric loaded quadruple ridge waveguide......Page 142
9.8 Impedance in quadruple ridge circular waveguide using conical ridges......Page 147
10.1 Introduction......Page 149
10.2 Faraday rotation section......Page 150
10.3 Scattering matrix of Faraday rotation section......Page 153
10.4 Gyrator network......Page 154
10.5 Gyromagnetic waveguide functional......Page 156
10.7 Quadruple ridge waveguide using gyromagnetic tiles......Page 159
10.8 Faraday rotation isolator......Page 160
10.10 Nonreciprocal Faraday rotation-type phase shifter......Page 163
10.11 Faraday rotation in dual-mode triple ridge waveguide......Page 164
11.1 Introduction......Page 168
11.2 ABCD parameters of 2-port step discontinuity......Page 169
11.4 Characterisation of half-wave long ridge waveguide test-set......Page 172
11.5 Experimental characterisation......Page 175
11.6 Symmetrical short section......Page 178
12.2 Operation of cross-guide directional coupler......Page 185
12.3 Bethe's small-hole coupling theory......Page 188
12.4 The 0-degree crossed-slot aperture......Page 190
12.5 The 0-degree crossed-slot aperture in rectangular waveguide......Page 192
12.6 The 0-degree crossed-slot aperture in single ridge waveguide......Page 193
12.7 The 45-degree crossed-slot aperture......Page 194
12.8 Circular polarisation in rectangular and ridge waveguides......Page 196
12.9 Rectangular and ridge waveguide cross-guide couplers using 45-degree crossed-slot apertures......Page 197
12.10 Coupling via waveguide walls of finite thickness......Page 199
13.2 Immittance inverters......Page 204
13.3 Lowpass filters using immittance inverters......Page 205
13.4 Bandpass filters using immittance inverters......Page 208
13.5 Immittance inverters......Page 210
13.6 Practical inverter......Page 213
13.7 Immittance inverters using evanescent mode waveguide......Page 215
13.8 E-plane filter......Page 216
13.9 Element values of lowpass prototypes......Page 219
13.10 Frequency response of microwave filters......Page 220
14.2 Mode matching method......Page 222
14.3 MMM characterisation of 1-port networks......Page 227
14.4 Double septa and thick septum problem regions......Page 230
14.5 MMM characterisation of symmetrical waveguide discontinuities......Page 231
14.6 Eigensolutions of waveguide sections......Page 233
14.8 E-plane bandpass filters using metal inverters......Page 236
14.9 Lowpass ridge filters using immittance inverters......Page 237
15.1 Introduction......Page 241
15.2 Nonreciprocal ferrite devices in rectangular waveguide......Page 242
15.3 Differential phase shift, phase deviation and figure of merit of ferrite phase shifter......Page 245
15.4 90-degree phase shifter in dielectric loaded WRD 200 ridge waveguide......Page 246
15.5 Isolation, insertion loss and figure of merit of resonance isolator......Page 248
15.6 Resonance isolator in dielectric loaded WRD 750 ridge waveguide......Page 249
15.7 Resonance isolator in bifurcated ridge waveguide......Page 251
15.8 Differential phase shift circulator......Page 253
16.2 Finline waveguide topologies......Page 256
16.3 Normalised wavelength and impedance in finline......Page 257
16.4 Empirical expressions for propagation in bilateral and unilateral finline......Page 260
16.5 Fields in unilateral finline waveguide......Page 262
16.6 Bilateral finline......Page 265
16.9 Finline isolator using hexagonal ferrite substrate......Page 266
17.2 Turnstile junction circulator......Page 271
17.3 Re-entrant H-plane waveguide circulator......Page 276
17.5 Closed gyromagnetic resonator......Page 277
17.6 Perturbation theory of closed cylindrical gyromagnetic resonator......Page 279
17.8 E-plane finline circulator using coupled H-plane turnstile resonators......Page 281
17.9 Experimental adjustment of finline turnstile circulator......Page 283
18.1 Introduction......Page 285
18.2 Phenomenological adjustment......Page 286
18.3 Impedance matrix......Page 287
18.4 Complex gyrator circuit......Page 292
18.5 Semi-tracking complex gyrator circuit......Page 293
18.6 Direct magnetic field and magnetisation of semi-tracking circulators......Page 296
18.8 Network problem......Page 300
18.9 Frequency response......Page 302
18.10 Design of octave-band semi-tracking circulators......Page 309
19.1 Introduction......Page 311
19.2 Stationary value of functional......Page 312
19.3 Electrical and magnetic energies in planar circuits......Page 313
19.4 Electric and magnetic fields in planar circuits with top and bottom electric walls......Page 314
19.5 Derivation of functional for planar isotropic circuits......Page 316
19.6 Rayleigh-Ritz procedure......Page 318
19.7 Field patterns......Page 320
19.8 Derivation of energy functional based on a mathematical technique......Page 321
Bibliography......Page 323
Index......Page 337
