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In this letter, a novel design of X-band rectangular waveguide bidirectional coupler is presented. Through the conversion of coaxial-rectangular waveguide, ladder loading of waveguide and waveguide coupling, the effective methods of matching and coupling are well-improved. This bidirectional coupler has good performance: the directivity is more than 25 dB and the coupling coefficient is 35dB with...
This paper presents an approach to the design of three-port H-plane waveguide Y-junction circulator with two partial height ferrite posts in the junction region which has the advantages of high isolation and low insertion loss. With 9.375GHz center frequency and 400MHz bandwidth, the X-band waveguide circulator designed with the approach could be used in microwave measurement systems, whose VSWR is...
In this letter, a novel design of X-band coaxial-to-rectangular waveguide transitions is presented. The transition includes an original waveguide-to-coaxial mode converter and modified impedance transformer. Detailed design concept is presented. Feasible way to optimize performance of the transition is analyzed and verified. Very good performance (S11 lower than −30dB) of the transitions was achieved...
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