Wide upper-stopband microstrip bandpass filter with dual-mode open loop stepped-impedance resonator and source-load coupling structure

2012 ◽  
Vol 54 (7) ◽  
pp. 1618-1621 ◽  
Author(s):  
Hong-Wei Deng ◽  
Yong-Jiu Zhao ◽  
Wen Chen ◽  
Bing Liu ◽  
Yan-Yun Liu
Keyword(s):  
Bandpass Filter ◽  
Open Loop ◽  
Dual Mode ◽  
Coupling Structure ◽  
Stepped Impedance Resonator

A NOVEL DUAL-MODE BANDPASS FILTER USING STUB-LOADED DEFECTED GROUND OPEN-LOOP RESONATOR

2011 ◽  
Vol 26 ◽  
pp. 31-37 ◽  
Author(s):  
Xuehui Guan ◽  
Bin Wang ◽  
Xiaoyan Wang ◽  
Shan Wang ◽  
Hai-Wen Liu
Keyword(s):  
Bandpass Filter ◽  
Open Loop ◽  
Dual Mode

A NOVEL COMPACT TRI-BAND BANDPASS FILTER BASED ON DUAL-MODE CRLH-TL RESONATOR AND TRANSVERSAL STEPPED-IMPEDANCE RESONATOR

2015 ◽  
Vol 56 ◽  
pp. 53-58
Author(s):  
Hailin Cao ◽  
Mao Yi ◽  
Huan Chen ◽  
Jsianshuo Liang ◽  
Yantao Yu ◽  
...  
Keyword(s):  
Bandpass Filter ◽  
Dual Mode ◽  
Stepped Impedance Resonator

scholarly journals A Compact Dual-Mode Bandpass Filter with High Out-of-Band Suppression Using a Stub-Loaded Resonator Based on the GaAs IPD Process

Electronics ◽  
2020 ◽  
Vol 9 (5) ◽  
pp. 712 ◽  
Author(s):  
Wei Zhang ◽  
Zhao Yao ◽  
Jie Zhang ◽  
Eun Seong Kim ◽  
Nam Young Kim
Keyword(s):  
Insertion Loss ◽  
High Performance ◽  
Return Loss ◽  
Bandpass Filter ◽  
Open Loop ◽  
Fabrication Process ◽  
Dual Mode ◽  
Transmission Zeros ◽  
Semiconductor Fabrication ◽  
Device Size

In this letter, a compact dual-mode bandpass filter (BPF) with an ultra-wide stopband that employs two folded open-loop resonators (FOLRs) and stub-loaded resonators (SLRs) is proposed. The dual-mode resonators are optimized by loading two SLRs onto the folded open-loop resonators, and this process is analyzed using the dual-mode theory. To miniaturize the device size and increase chip performance, the proposed BPF is fabricated by a III–V compound semiconductor-fabrication process using a high-performance GaAs substrate based on the integration passivation device (IPD) fabrication process. A compact dual-mode BPF with low insertion loss and high return loss is designed and fabricated. Two extra transmission zeros (TZs) located in the high-frequency range increase the wide stopband, and the two TZs near the passband result in a higher selectivity. A resonant frequency centered at 7.45 GHz with an insertion loss of −1.21 dB and a measured return loss of higher than −23.53 dB and 3 dB fractional bandwidths of 5.8% are achieved. The stopband can be suppressed up to 20 GHz owing to the two tunable TZs resulting in higher selectivity and wideband rejection. The size of the filter was drastically optimized using a simplified architecture of two FOLRs and SLRs.

Microstrip stepped-impedance resonator bandpass filter with over-coupling structure for suppression of harmonic response

2004 ◽  
Vol 41 (2) ◽  
pp. 130-133 ◽  
Author(s):  
Min-Hung Weng ◽  
Chi-Hsiang Pan ◽  
Chih-Wei Shao ◽  
Hung-Wei Wu ◽  
Tsung-Hui Huang
Keyword(s):  
Bandpass Filter ◽  
Harmonic Response ◽  
Coupling Structure ◽  
Stepped Impedance Resonator

A dual-mode uniplanar bandpass filter using an inset-coupling structure

2004 ◽  
Vol 41 (6) ◽  
pp. 481-483
Author(s):  
Adnan Görür ◽  
Şenol Çaliskan ◽  
Ceyhun Karpuz
Keyword(s):  
Bandpass Filter ◽  
Dual Mode ◽  
Coupling Structure
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