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Lumped Element Suspended Stripline Couplers

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2 Author(s)
Wolfgang Menzel ; University of Ulm, Institute of Microwave Techniques, D-81069 Ulm, Germany, E-mail: ; Zimeng Yang

Recently, very compact filters have been realized in suspended stripline using a lumped element approach. In this paper, a similar approach is used to realize very small 3 dB hybrid couplers. Two examples at 1.3 GHz and 6.8 GHz are presented, resulting in relative bandwidths of 5% to 10% (at -15 dB isolation) and quite low insertion loss. For the 1.3 GHz and 6.8 GHz range, these couplers are realized in a 20 mm times 20 mm and 10 mm times 10 mm mount, respectively.

Published in:

2009 German Microwave Conference

Date of Conference:

16-18 March 2009