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Ridge Waveguides and Passive Microwave Components. Electromagnetic Waves- Product Image
Ridge Waveguides and Passive Microwave Components. Electromagnetic Waves- Product Image

Ridge Waveguides and Passive Microwave Components. Electromagnetic Waves

  • ID: 3527732
  • Book
  • June 2000
  • IET Books

The ridge waveguide, which is a rectangular waveguide with one or more metal inserts (ridges), is an important transmission line in microwave engineering, through which many passive components can be achieved. As such it is a well-established and widely used element in commercial electronics and communications devices. This book collects together much of the work of Professor Helszajn, an international authoriy in the field, and will enable the reader to have direct access to this material without need for exhaustive search of research papers. Generously illustrated, it is likely to become the definitive reference source on this topic. The book includes closed-form and finite element calculations of the propagation constant, attenuation and mode spectrum for the ridge waveguide, as well as power-current and power-voltage definitions of impedance. Circular polarisation is also treated. Propagation properties where the waveguide has a dielectric filler are calculated. The treatment is then extended to more complex designs, including quadruple ridge waveguides with and without a gyromagnetic filler. The text includes descriptions of many of the passive devices which can be realised using these waveguides, including isolators, phase shifters and circulators. A treatment of the finline waveguide is included as its geometry is closely related to that of the ridge waveguide, leading to components such as the 3-port finline calculator.

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- Chapter 1: The ridge waveguide
- Chapter 2: Propagation and impedance in rectangular waveguides
- Chapter 3: Impedance and propagation in ridge waveguides using the transverse resonance method
- Chapter 4: Fields, propagation and attenuation in double ridge waveguide
- Chapter 5: Impedance of double ridge waveguide using the finite element method
- Chapter 6: Characterisation of single ridge waveguide using the finite element method
- Chapter 7: Propagation constant and impedance of dielectric loaded ridge waveguide using a hybrid finite element solver
- Chapter 8: Circular polarisation in ridge and dielectric loaded ridge waveguides
- Chapter 9: Quadruple ridge waveguide
- Chapter 10: Faraday rotation in gyromagnetic quadruple ridge waveguide
- Chapter 11: Characterisation of discontinuity effects in single ridge waveguide
- Chapter 12: Ridge cross-guide directional coupler
- Chapter 13: Directly coupled filter circuits using immittance inverters
- Chapter 14: Ridge waveguide filter design using mode matching method
- Chapter 15: Nonreciprocal ridge isolators and phase-shifters
- Chapter 16: Finline waveguide
- Chapter 17: Inverted turnstile finline junction circulator
- Chapter 18: Semi-tracking ridge circulator
- Chapter 19: Variational calculus, functionals and the Rayleigh-Ritz procedure
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J. Helszajn

Professor Joseph Helszajn OBE is an international authority on nonreciprocal microwave circuits and devices. After industrial experience in the USA he obtained his Ph.D. from the University of Leeds and spent much of his academic career at Heriot-Watt University, where he founded its microwave laboratory. A Fellow of the IEE and IEEE, he acted as an Honorary Editor of the IEE Proceedings for 18 years and has published 11 books. In 1995 he was awarded the IEE JJ Thomson Medal.

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