A wide band radio frequency circulator

Abstract

A wide band radio frequency (RF) circulator is presented. The RF circulator includes at least one stage having four ports, a first end, and a second end, wherein a first port and a third port are connected at the first end of the at least one stage, a second port and a fourth port are connected at the second end of the at least one stage, and each of the at least one stage includes a pair of couplers connected through a first delay line and a second delay line, thereby forming a network of couplers in the at least one stage.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of U.S. Provisional Application No. 62 / 323,814, filed April 18, 2016, and U.S. Provisional Application No. 62 / 360,398, filed July 10, 2016, the contents of which are hereby incorporated by reference. technical field [0003] The present disclosure relates generally to passive radio frequency (RF) devices, and more particularly to broadband radio frequency (RF) circulators. Background technique [0004] An RF circulator is a 3-port ferromagnetic passive device used to condition signal flow within a circuit. RF circulators transmit the incoming signal in one direction. An example structure of a conventional RF circulator 100 is shown in FIG. 1 . [0005] A conventional RF circulator 100 includes a Y-shaped conductor (eg, metal strip) 110 placed on a ferrite substrate 120 and a permanent magnet 130 orthogonal to the Y-shaped conductor 110 . An RF signal input at port 101 is transmitt...

AI Technical Summary

Problems solved by technology

As mentioned above, conventional RF circulators cannot meet this need

Also, insertion loss can lead to poor transmission and reception of RF signals

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