Design of a new dual-band microstrip bandpass filter with multiple transmission zeros

2008 ◽  
Vol 50 (11) ◽  
pp. 2874-2877
Author(s):  
Lin Li ◽  
Zheng-Fan Li
Keyword(s):  
Bandpass Filter ◽  
Dual Band ◽  
Transmission Zeros ◽  
Multiple Transmission

Miniaturized Dual-Band Bandpass Filter Using Embedded Dual-Mode Resonator with Controllable Bandwidths

Frequenz ◽  
2016 ◽  
Vol 70 (9-10) ◽  
Author(s):  
Chuanming Zhu ◽  
Jin Xu ◽  
Wei Kang ◽  
Zhenxin Hu ◽  
Wen Wu
Keyword(s):  
Insertion Loss ◽  
Degrees Of Freedom ◽  
Bandpass Filter ◽  
The Other ◽  
Dual Band ◽  
Dual Mode ◽  
Transmission Zeros ◽  
Low Insertion Loss ◽  
Multiple Transmission ◽  
Mode Resonator

AbstractIn this paper, a miniaturized dual-band bandpass filter (DB-BPF) using embedded dual-mode resonator (DMR) with controllable bandwidths is proposed. Two passbands are generated by two sets of resonators operating at two different frequencies. One set of resonators is utilized not only as the resonant elements that yield the lower passband, but also as the feeding structures with source-load coupling to excite the other to produce the upper passband. Sufficient degrees of freedom are achieved to control the center frequencies and bandwidths of two passbands. Moreover, multiple transmission zeros (TZs) are created to improve the passband selectivity of the filter. The design of the filter has been demonstrated by the measurement. The filter features not only miniaturized circuit sizes, low insertion loss, independently controllable central frequencies, but also controllable bandwidths and TZs.

A Dual-Band Waveguide Bandpass Filter with Adjustable Transmission Zeros

2018 ◽  
Vol 27 (07) ◽  
pp. 1850100 ◽  
Author(s):  
Amit Bage ◽  
Sushrut Das
Keyword(s):  
Bandpass Filter ◽  
Transverse Plane ◽  
Dual Band ◽  
Center Frequency ◽  
Independent Control ◽  
Transmission Zeros ◽  
Rejection Level ◽  
Multiple Transmission

This paper presents a planar insert-loaded compact, dual-pole, dual-band, waveguide bandpass filter with adjustable multiple transmission zeros. Two identical inserts are placed on the transverse plane of a standard WR-90 waveguide at 8.41[Formula: see text]mm distance to achieve the filter characteristics. The insert consists of a stub-loaded C-shaped resonator and two asymmetric slot resonators. Two stub-loaded C-shaped resonators have been used to achieve dual-pole, dual-band response whereas the asymmetric slot pairs have been used to introduce transmission zeros. The structure allows independent control of the center frequencies of the passbands and transmission zeros, which is useful to control the rejection level of out-of-band signals without disturbing the center frequency. Measured result shows a dual-pole, dual-band, bandpass response with center frequencies at 8.81[Formula: see text]GHz and 10.9[Formula: see text]GHz, the respective 3[Formula: see text]dB bandwidths of 0.276[Formula: see text]GHz and 0.398[Formula: see text]GHz and transmission zeros at 8.02, 8.5, 9.46, 10.13, 11.53 and 12 GHz.

Compact microstrip dual-band bandpass filter with multiple transmission zeros

2013 ◽  
Vol 27 (7) ◽  
pp. 930-937 ◽  
Author(s):  
Biao Wang ◽  
Xiao-Hua Wang ◽  
Bing-Zhong Wang ◽  
Hualiang Zhang
Keyword(s):  
Bandpass Filter ◽  
Dual Band ◽  
Transmission Zeros ◽  
Multiple Transmission

Miniaturized Dual-Band Bandpass Filter with Multiple Transmission Zeros Using Modified Stepped-Impedance Resonators

2014 ◽  
Vol 34 (6) ◽  
pp. 474-479 ◽  
Author(s):  
Z. T. He ◽  
C. Wang ◽  
X. B. Wei ◽  
G. T. Yue ◽  
Y. Shi
Keyword(s):  
Bandpass Filter ◽  
Dual Band ◽  
Transmission Zeros ◽  
Multiple Transmission

Design of Dual-Band Bandpass Filter With Multiple Transmission Zeros Using Transversal Signal Interaction Concepts

2019 ◽  
Vol 29 (1) ◽  
pp. 32-34 ◽  
Author(s):  
Li-Tian Wang ◽  
Yang Xiong ◽  
Li Gong ◽  
Man Zhang ◽  
Hui Li ◽  
...  
Keyword(s):  
Bandpass Filter ◽  
Dual Band ◽  
Transmission Zeros ◽  
Multiple Transmission

Miniaturized Dual-Band Bandpass Filter with Multiple Transmission Zeros

2013 ◽  
Vol 33 (8) ◽  
pp. 591-597 ◽  
Author(s):  
X.-B. Wei ◽  
G.-T. Yue ◽  
Y. Shi ◽  
P. Wang ◽  
J.-X. Liao ◽  
...  
Keyword(s):  
Bandpass Filter ◽  
Dual Band ◽  
Transmission Zeros ◽  
Multiple Transmission
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