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A Compact Wideband Microstrip Crossover

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4 Author(s)
Wendong Liu ; State Key Lab. of Microwave & Commun., Tsinghua Univ., Beijing, China ; Zhijun Zhang ; Feng, Z. ; Iskander, M.F.

In this letter, a planar microstrip crossover junction is presented. The conductor-backed coplanar waveguide (CB-CPW) structure with vias is employed as the core part of the crossover design. The dimensions of the CB-CPW crossover itself are 11.3 × 11.3 mm2. Two kinds of the transitions between the microstrip line (MSL) and the CB-CPW structure are merged into a double side print circuit board. This presented crossover junction has a bandwidth from 10 up to 6000 MHz for 20 dB return loss, 1 dB insertion loss and -20 dB isolation. Compared with the other designs, this planar crossover features wide bandwidth and compact configuration.

Published in:

Microwave and Wireless Components Letters, IEEE  (Volume:22 ,  Issue: 5 )