Some Applications of Ferrites to Microwave Switches, Phasers, and Isolators

Two types of switch are described, one which is matched in both "on" and "off" positions, and the other is a very short, wide-frequency band, reactive switch suitable for switching at high repetition rates. A phaser is presented which is a reciprocal device and uses an unusual ferrite configuration. Although no particular isolator design has been included since this has been the subject of many previous articles, the effects of variations of temperature and dimensional parameters have been investigated and the results are presented here, together with some observations on scaling isolator designs into different frequency bands.