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- Title
THE ROUND-ENDED DESIGN AND MEASUREMENT OF ALL SYMMETRIC EDGE-COUPLED BANDPASS FILTER.
- Authors
Bao-Hua Yang; Mehdi, Ghulam; Anyong Hu; Yan Xie; Xian-Xun Yao; Jin Zhang; Cheng Zheng; Jungang Miao
- Abstract
The round-corner design of an all symmetric edge-coupled bandpass filter (BPF) is presented. The manufacturing tolerances and its effects of frequency shift on the design of the edge-coupled are investigated. Consequently, the round-ended design method is proposed in order to compensate the open-end effect in the half- wavelength resonator section with the round-ended corners rather than decrementing the lengths in a conventional way, and an experience formula and a corresponding procedure are devised for the design of such filters. The widths of all the half-wavelength resonators are set equal to avoid discontinuities in the interior of the filter. The filter is realized on a ceramic filled soft substrate with dielectric constant of 6.2. For obtaining the de-embedded measured results at the device plane an in-house customized through-reflect-line (TRL) calibration kit is produced. Three kinds of filters at different center frequencies are manufactured, and their measured results are in good agreement with the simulated ones after calibration.
- Subjects
BANDPASS filters; WAVELENGTHS; PERMITTIVITY; DIELECTRIC resonators; MILLIMETER wave devices
- Publication
Progress in Electromagnetics Research C, 2013, Vol 38, p191
- ISSN
1937-8718
- Publication type
Article
- DOI
10.2528/pierc13012609