Progress In Electromagnetics Research C
ISSN: 1937-8718
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By H. C. Jayatilaka, D. M. Klymyshyn, M. Börner, and J. Mohr

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A thick metal microstrip diplexer is presented. The circuit is based on compact folded half wavelength resonators and uses a source/load-multi-resonator coupling method providing improved performance and greater design flexibility. Source/load coupling with multiple resonators introduces additional transmission zeros, and this coupling is enhanced by using high-aspect-ratio metal structures. Tall, narrow metal arms connected to the ports and extended to the non-adjacent resonators provide effective multi-resonator bypass coupling. The high-aspect-ratio diplexer fabricated using polymer-based deep X-ray lithography and 0.22 mm thick metal electroplating demonstrates the advantages of thick metal structures for coupled resonator applications.

H. C. Jayatilaka, D. M. Klymyshyn, M. Börner, and J. Mohr, "Compact Thick Metal Diplexer with Multi-Coupled Folded Half Wavelength Resonators," Progress In Electromagnetics Research C, Vol. 18, 1-8, 2011.

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