The problem is considered of packing along the focal curve of a reflector or lens multiple feeds which are large enough to provide a proper primary pattern and at the same-time close enough together to give adequate secondary pattern overlap. In many cases this, can not be done. Matched microwave switching networks which will switch on any q adjacent feeds in a line of N feeds are considered as one solution to the problem; Various arrangements are possible requiring different types of switches. Electro-mechanical, ferrite, and electronic switches are discussed with regard to their suitability for this function.
展开▼
