Passive and active microwave circuits

Engineering & Transportation

Helszajn, J.

Engineering

wiley

A comprehensive examination of single crystal yttrium iron garnet and gallium-substituted magnetic insulators. Treating all aspects of system theory, design, and application, chapters cover the microwave gyrator, uniform mode, magnetostatic modes, spinwave modes, crystalline anisotropy, non-linear theory, measurement, open-circuit parameters, unloaded, external, and loaded Q-factors, and more.

YIG Resonators and Filters

John Wiley&Sons

Delves into several important parallel bandpass and bandstop passive arrangements including directional couplers, power dividers, filters, gyromagnetic phase shifters, junction circulators, planar radiators and open dielectric and planar resonators. Features design equations suitable for both simulation and implementation regarding a number of typical networks. Each chapter is modular and self-contained, with problems and examples included to illustrate the theory.

Microwave Planar Passive Circuits and Filters

The application of Green?s function to planar microwave circuits is now very well accepted as a fundamental tool in electromagnetic analysis. Combining various modern mathematical techniques this book presents comprehensive and detailed methods for numerically describing practical microwave circuits (with one or more ports). Features include: 
<ul>
<li>Applications of Green?s function in: planar resonators, gyromagnetic circuits and junction circulators, together with applied examples</li> <li>Detailed explanation of the use of Finite Element Method (FEM) techniques for calculating the solution of planar isotropic and gyromagnetic circuits</li> <li>Specifically written for industrial engineers specialising in the analysis and development of planar circuits and postgraduate researchers</li> </ul> A perfect companion text for developing software for the solution of microwave circuits.

Green's Function, Finite Elements and Microwave Planar Circuits

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.

Ridge Waveguides and Passive Microwave Components (Electromagnetic Waves)

Science & Math

Technology

The Institution of Engineering and Technology