A miniaturized low‐cost microstrip‐to‐coplanar waveguide transition‐based ultra‐wideband bandpass filter with multiple transmission zeros

2020 ◽  
Vol 62 (12) ◽  
pp. 3662-3667 ◽  
Author(s):  
Abu Nasar Ghazali ◽  
Mohd Sazid ◽  
Srikanta Pal
Keyword(s):  
Bandpass Filter ◽  
Low Cost ◽  
Coplanar Waveguide ◽  
Ultra Wideband ◽  
Transmission Zeros ◽  
Waveguide Transition ◽  
Multiple Transmission

scholarly journals Parallel-Coupled Coplanar-Waveguide Bandpass Filter With Multiple Transmission Zeros

2007 ◽  
Vol 17 (2) ◽  
pp. 118-120 ◽  
Author(s):  
Chao-Huang Wu ◽  
Chi-Hsueh Wang ◽  
Yo-Shen Lin ◽  
Chun Hsiung Chen
Keyword(s):  
Bandpass Filter ◽  
Coplanar Waveguide ◽  
Transmission Zeros ◽  
Multiple Transmission

Design of multiple transmission zeros-enabled compact broadband BPFs based on microstrip-to-CPW transition technology

2021 ◽  
pp. 1-7
Author(s):  
Abu Nasar Ghazali ◽  
Mohd Sazid
Keyword(s):  
Coplanar Waveguide ◽  
Ground Plane ◽  
Ultra Wideband ◽  
Ring Resonators ◽  
Split Ring ◽  
Microstrip Lines ◽  
Transmission Zeros ◽  
Resonant Modes ◽  
Multiple Transmission ◽  
Good Agreement

Abstract In this paper, we present a miniaturized ultra-wideband (UWB) bandpass filter (BPF) with multiple transmission zeros (TZs), which is based on transition technology of microstrip with short-circuited coplanar waveguide (CPW). The ground plane of the BPF contains a multiple mode resonator (MMR)-based CPW which is capacitively linked through the dielectric to two open-circuited microstrip lines on the top. The MMR is initially designed to allocate its lowest three resonant modes quasi-equally inside the designated UWB spectrum (3.1–10.6 GHz). This is followed by optimization of microstrip lines to provide a good broadband response possessing minimum insertion loss, two TZs at the lower and upper passband edges that improve selectivity and a wide stopband with appreciable attenuation. Later, multiple-folded split ring resonators are coupled to the BPF to inject dual passband TZs. The predicted theory in simulation is verified against measured result and is found to be in good agreement. The prototype covers a substrate area of only 14.6 × 9.2 mm2.

scholarly journals Compact tri‐wideband bandpass filter with multiple transmission zeros

ETRI Journal ◽  
2018 ◽  
Vol 41 (1) ◽  
pp. 117-123 ◽  
Author(s):  
Yang Xiong ◽  
LiTian Wang ◽  
Li Gong ◽  
KaiYong He ◽  
Man Zhang ◽  
...  
Keyword(s):  
Bandpass Filter ◽  
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.

Miniaturized Wideband Bandpass Filter based on Capacitor-loaded One-eighth Wavelength Coupled Line

2021 ◽  
Vol 36 (7) ◽  
pp. 865-871
Author(s):  
Jin Shi ◽  
Jiancheng Dong ◽  
Kai Xu ◽  
Lingyan Zhang
Keyword(s):  
Insertion Loss ◽  
Simple Structure ◽  
Bandpass Filter ◽  
State Of The Art ◽  
Center Frequency ◽  
Fractional Bandwidth ◽  
Coupled Line ◽  
Transmission Zeros ◽  
Compact Size ◽  
Multiple Transmission

A novel miniaturized wideband bandpass filter (BPF) using capacitor-loaded microstrip coupled line is proposed. The capacitors are loaded in parallel and series to the coupled line, which makes the filter just require one one-eighth wavelength coupled line and achieve filtering response with multiple transmission poles (TPs) and transmission zeros (TZs). Compared with the state-of-the-art microstrip wideband BPFs, the proposed filter has the advantages of compact size and simple structure. A prototype centered at 1.47 GHz with the 3-dB fractional bandwidth of 86.5% is demonstrated, which exhibits the compact size of 0.003λ2 g (λg is the guided wavelength at the center frequency) and the minimum insertion loss of 0.37 dB.

Bandstop Filters with Comb-Like Electromagnetic Bandgap Structures on CPW Stubs

2009 ◽  
Vol 74 ◽  
pp. 189-192
Author(s):  
Zhong Liang Deng ◽  
J.M. Huang ◽  
B.H. Ding
Keyword(s):  
Insertion Loss ◽  
Low Cost ◽  
Coplanar Waveguide ◽  
Ultra Wideband ◽  
Pass Band ◽  
Surface Micromachining ◽  
Electromagnetic Bandgap ◽  
Band Stop Filter ◽  
Immense Potential ◽  
Bandstop Filters

An ultra-wideband (UWB) band-stop filter (BSF) has been designed with flat responses at a selected frequency by cascading the unit electromagnetic bandgap (EBG) structures in this paper. The BSFs fabricated by the surface micromachining process have immense potential to compactness and low cost. The BSFs are constructed with comb-like EBG structures on a coplanar-waveguide (CPW) and have been investigated numerically. The simulation result of the BSF is demonstrated to have a good performance on its work band. It reveals a 20 dB stopband with a bandwidth of 6.8GHz. The pass-band insertion loss is less than 1.7dB.

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