Dual-mode dual-band filter with flexible frequency ratio using degenerate modes of ring resonator

2012 ◽  
Vol 26 (10) ◽  
pp. 1381-1387 ◽  
Author(s):  
Q. Cao ◽  
G. Wang
Keyword(s):  
Frequency Ratio ◽  
Ring Resonator ◽  
Dual Band ◽  
Dual Mode ◽  
Band Filter ◽  
Degenerate Modes

scholarly journals A Novel Dual-Mode Dual-Band Bandpass Filter Based on a Single Ring Resonator

2020 ◽  
Vol 20 (2) ◽  
pp. 91-95
Author(s):  
Youngje Sung
Keyword(s):  
Resonant Frequency ◽  
Circular Hole ◽  
Bandpass Filter ◽  
Ring Resonator ◽  
Dual Band ◽  
Mode Structure ◽  
Dual Mode ◽  
Band Filter ◽  
Single Ring ◽  
Mode Characteristic

In this paper, a dual-mode bandpass filter that operates in two different bands is proposed. A circular patch with a small circular hole is set as the basic resonator, and, as the circular hole moves, the linewidth of the ring resonator becomes non-uniform. Consequently, the ring resonator is structurally asymmetric and exhibits a dual-mode characteristic. A gap is formed in the middle of the resonator, a pair of inductors and capacitors is applied to the gap, and the proposed dual-mode structure operates as a dual-band filter. The first resonant frequency <i>f</i><sub>1</sub> is determined by the inductor and capacitor values, and the second resonant frequency <i>f</i><sub>2</sub> is determined by the capacitor values. In addition, the frequency ratio (<i>f</i><sub>2</sub>/<i>f</i><sub>1</sub>) can be adjusted by an appropriate combination of inductor and capacitor values.

scholarly journals TRANSMISSION ZERO DESIGN GRAPH FOR DUAL-MODE DUAL-BAND FILTER WITH PERIODIC STEPPED-IMPEDANCE RING RESONATOR

2010 ◽  
Vol 108 ◽  
pp. 23-36 ◽  
Author(s):  
Yi-Chyun Chiou ◽  
Ping-Shiang Yang ◽  
Jen-Tsai Kuo ◽  
Cho-Yuh Wu
Keyword(s):  
Ring Resonator ◽  
Dual Band ◽  
Dual Mode ◽  
Transmission Zero ◽  
Band Filter

3-D Printed Dual-Band Filter Based on Spherical Dual-Mode Cavity

2021 ◽  
pp. 1-1
Author(s):  
Yuan Chen ◽  
Gang Zhang ◽  
Jiasheng Hong ◽  
Zhengyu Sun ◽  
Jiquan Yang ◽  
...  
Keyword(s):  
Dual Band ◽  
Dual Mode ◽  
Band Filter

A miniature dual-band filter based on microstrip dual-mode resonators

2012 ◽  
Vol 38 (9) ◽  
pp. 839-842 ◽  
Author(s):  
B. A. Belyaev ◽  
A. M. Serzhantov ◽  
V. V. Tyurnev
Keyword(s):  
Dual Band ◽  
Dual Mode ◽  
Band Filter

A novel dual-band filter based on single-cavity CTSRR-loaded triangular substrate-integrated waveguide

2019 ◽  
Vol 11 (9) ◽  
pp. 894-898
Author(s):  
Q. F. Geng ◽  
H. J. Guo ◽  
Y. Y. Zhu ◽  
W. Huang ◽  
S. S. Deng ◽  
...  
Keyword(s):  
Split Ring Resonator ◽  
Dual Band ◽  
Substrate Integrated Waveguide ◽  
Transmission Zeros ◽  
Band Filter ◽  
Feeding Technique ◽  
Filter Loading ◽  
Degenerate Modes ◽  
Single Cavity ◽  
Good Agreement

AbstractIn this paper, a novel single-cavity triangular substrate-integrated waveguide (TSIW) dual-band filter loading a complementary triangular split ring resonator (CTSRR) is proposed, which has three transmission zeros (TZs) in the stopband in total. The dual-band response is achieved by the CTSRR and the degenerate modes of the TSIW cavity. In order to control the TZs, we propose two adjustment techniques, shift feeding technique and adding via perturbation. In addition, the CTSRR etched on the surface can produce a new TZ in the upper first-passband. Finally, a dual-band filter with three TZs is simulated, fabricated, and measured. There is a good agreement between the simulated results and measured ones.

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