A WAVEGUIDE SLOT SWITCHING TECHNIQUE
Abstract
A series of experiments is described on a novel technique which permits a slot radiator in a waveguide to switch its radiation on and off by means of a compact circuit located at the plane of the slow and within the wall thickness of the waveguide feed line. As described in this report, the switching technique is applied to an end-plate series slot. It is electronically operated by means of a d.c. biased varactor diode. As a reference, the switch characteristics when operated by a mechanical tuning plunger are also given. An analytical description of the technique is also included. The experiments were conducted at S-band and at X-band. The S-band model when operated mechanically provided a slot switching ratio of 38 db and when operated electronically gave a ratio of 35.6 db. Similar operation with an X-band model yielded 50 db and 16.1 db, respectively. These results were obtained at the original resonant frequency of the slot, i. e., the presence of the switching circuit did not change the slot resonant frequency. Such electronically controllable slots hold promise for increasing the versaility of waveguide slot arrays. They may also find application in electronically controlled digital phase shifters.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1963
- Accession Number
- AD0407186
Entities
People
- C. H. Nonnemaker
- F. J. Goebels
Organizations
- Hughes Aircraft Company