Title :
A Traveling-Wave Directional Filter
Author :
Coale, Franklin S.
fDate :
10/1/1956 12:00:00 AM
Abstract :
A new type of microwave filter is presented in which resonance occurs in the form of a traveling wave rather than in the conventional form of a standing wave. This device is a constant-resistance circuit, and therefore presents a very low input vswr. Formulas for loaded Q and insertion loss are given. Experimental results verify the theoretical approach. This filter, which is constructed of a transmission-line loop and two directional couplers, finds application in multiplexing filters as well as in matched band-pass and band-rejection filters.
Keywords :
Band pass filters; Directional couplers; Insertion loss; Low pass filters; Magnetic resonance; Matched filters; Microwave devices; Microwave filters; Resonant frequency; Transmission line theory;
Journal_Title :
Microwave Theory and Techniques, IRE Transactions on
DOI :
10.1109/TMTT.1956.1125073
