THERMAL SCIENCE
International Scientific Journal
A NOVEL RECONFIGURABLE TRI-MODE RESONATOR AND ITS APPLICATION TO BANDPASS FILTER
ABSTRACT
A reconfigurable tri-mode resonator and its application to tri-band bandpass filter have been demonstrated. The proposed filter exhibits 32.8% fractional tuning range of the first passband from 1.12-1.56 GHz and 12.73% of the third pass-band from 2.50-2.84 GHz, and a fixed second passband at 2 GHz, respectively. The first and third frequency passbands can be tuned independently without interfering with each other. Especially, the filter uses a hybrid technique of lumped inductors and microstrip lines, resulting in a very compact mechanical size of 0.12 λg × 0.08 λg, where λg is the guided wavelength on the substrate at the central of the first passband frequency. The measured results agree well with the simulated ones.
KEYWORDS
PAPER SUBMITTED: 2021-04-11
PAPER REVISED: 2021-07-06
PAPER ACCEPTED: 2021-07-27
PUBLISHED ONLINE: 2022-04-09
THERMAL SCIENCE YEAR
2022, VOLUME
26, ISSUE
Issue 2, PAGES [1131 - 1137]
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