A novel CPW DC-blocking topology with improved matching at W-band

Huynen, Isabelle;Dambrine, G.
(1998) IEEE Microwave and Guided Wave Letters — Vol. 8, n° 4, p. 149-151 (1998)

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This letter presents the design of a new wide-band DC-blocking filter in coplanar waveguide (CPW) technology. Compared with the well-known coplanar open-end series stub, the matching of the new filter is theoretically shown to be improved from -10 to -20 dB over the whole W-band. The calculation is made by combining coupled line theory with a simple variational calculation of modal parameters. Measurements carried out in the W-band show very good agreement with the theory.
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Huynen, I., & Dambrine, G. (1998). A novel CPW DC-blocking topology with improved matching at W-band. IEEE Microwave and Guided Wave Letters, 8(4), 149-151. https://doi.org/10.1109/75.663514 (Original work published 1998)