Microwave Ring Circuits and Related Structures Second Edition Kai Chang and Lung-Hwa Hsieh Wiley Interscience 377 pages; $125 ISBN: 0-471-44474-X Ring resonators have been used extensively in microwave circuits such as filters, oscillators, mixers, couplers, power dividers/combiners, antennas and frequency selective surfaces. They are also useful in various techniques...
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