Design and Implementation of Parallel Coupled Line Bandpass Filter for Improvement of Return Loss Using Various EBG Structures

2020 ◽  
Author(s):  
Manish Zadoo ◽  
Yogendra Kumar Jain ◽  
Ashwani Kumar
Keyword(s):  
Return Loss ◽  
Bandpass Filter ◽  
Coupled Line ◽  
Design And Implementation

A multi-mode resonator-based UWB bandpass filter with wide stopband

2015 ◽  
Vol 8 (7) ◽  
pp. 1031-1035 ◽  
Author(s):  
Ting Zhang ◽  
Fei Xiao ◽  
Xiaohong Tang ◽  
Lei Guo
Keyword(s):  
Return Loss ◽  
Bandpass Filter ◽  
Mode Analysis ◽  
Frequency Range ◽  
Coupled Line ◽  
Resonance Characteristic ◽  
Line Section ◽  
Multi Mode ◽  
Mode Resonator ◽  
Better Than

In this paper, a novel multi-mode resonator is presented, which is formed by cascading several open-circuited transmission line sections with a coupled-line section. Owing to its symmetry, even- and odd-mode analysis methods are applied to analyze its resonance characteristic. Based on this resonator, a microstrip ultra-wide bandwidth (UWB) bandpass filter is designed, fabricated, and measured. The simulated and measured results show that its bandwidth can cover the desired UWB. Return loss in passband is better than −14 dB. This filter is featured by good selectivity and wide stopband. Stopband suppression as low as −40 dB can be achieved within frequency range from 12 to 16 GHz.

scholarly journals Design and Implementation of Coupled Line Bandpass Filter at C-Band

2020 ◽  
Author(s):  
Abhinaya M ◽  
Bhavika B ◽  
Harsh Dashora ◽  
Jitendra Kumar
Keyword(s):  
High Frequency ◽  
High Performance ◽  
Bandpass Filter ◽  
Wireless Receivers ◽  
Dielectric Resonators ◽  
Planar Technology ◽  
Coupled Line ◽  
Design And Implementation ◽  
Radio Frequency Filters ◽  
Lumped Elements

A Radio frequency filters having applications that demand high performance and intends to contribute in system’s size and cost must be achieved by a different approach. That might be in using an advanced material, planar technology or dielectric resonators, as filter involves in many fields like wireless receivers, transmitters and in multiple locations inside an RF system to shed noise. This paper primarily demonstrates how bandpass filter exhibits itself differently when realized using lumped elements or microstrip transmission line to acquire minimum losses when transmitting high frequency signals over long or short distances in planar technology. And explains in detail to design and simulate microstrip coupled line bandpass filter.

Miniaturized bandpass filter using coupled lines for wireless applications

Frequenz ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Abbas Mohamadinia ◽  
Farzin Shama ◽  
Mohammad Amir Sattari
Keyword(s):  
Insertion Loss ◽  
Return Loss ◽  
Bandpass Filter ◽  
Analytical Description ◽  
Coupled Line ◽  
Wireless Applications ◽  
High Return ◽  
Coupled Lines ◽  
Low Insertion Loss ◽  
Lc Equivalent Circuit

Abstract In this paper, a bandpass filter (BPF) has been designed using bent and coupled-line structure. The design process of the filter to achieve a BPF with good characteristics is completely explained. Therefore the LC equivalent circuit of The BPF is presented as the analytical description. The proposed filter can pass frequencies between 2.2 and 3.6 GHz with an insertion loss <0.4 dB, which is suitable for wireless applications. The fractional bandwidths (FBW) of the filter is about 48%. Some characteristics such as small size, low insertion loss, high return loss wide upper stopband bandwidth, and good suppression level in stopband are among the advantages of this study to be mentioned. Finally, the presented filter was fabricated, and the measured results have a proper agreement with the simulation results.

scholarly journals Design and Realization of Coupled Line Bandpass Filter Using Compact Structure at Frequencies of 3300 MHz – 3400 MHz for WiMAX Application

2016 ◽  
Vol 16 (1) ◽  
pp. 11
Author(s):  
Arief Budi Santiko ◽  
Yahya Syukri Amrullah ◽  
Yuyu Wahyu ◽  
Muhammad Ilham Maulana ◽  
Bambang Setia
Keyword(s):  
Insertion Loss ◽  
Return Loss ◽  
Bandpass Filter ◽  
Center Frequency ◽  
Design System ◽  
Compact Structure ◽  
Coupled Line ◽  
Broadband Wireless ◽  
Simulation And Optimization ◽  
Simulation Results

In this paper, the design of microstrip BPF (Bandpass Filter) for WiMAX (Worldwide Interoperability for Microwave Access) application has been presented. The frequency band allocations for BWA (Broadband Wireless Access) in Indonesia are 2.3; 3.3 and 5.8 GHz. This microtrip BPF is designed using parallel coupled line in compact form and it has spesific parameter, i.e. 3.35 GHz center frequency, 400 MHz bandwidth, VSWR ≤ 2, -3 dB insertion loss and matching impedance between two port is 50 Ω. The Advanced Design System (ADS) software has been used during simulation and optimization. The simulation results show that return loss S11 and insertion loss S21 are -15.31 dB and -2.2 dB at 3.35 GHz respectively. For the design verification, the prototype of the proposed design wasfabricated and measured.The results of the fabrication approach of simulation results, which have return loss value S11and insertion loss S21 of the proposed microstrip filter are -18.20 dB and -2.91 dB at 3.35 GHz respectively. The result shows that the proposed design can be implemented forWiMAX communication system applications

scholarly journals 3D Modeling Parallel Coupled-Line Bandpass Filter Based on Coplanar Waveguide MMIC Multilayer Technology

2019 ◽  
Vol 5 (1) ◽  
pp. 24-30
Author(s):  
Rizqi Eka Putri ◽  
Emerson Pascawira Sinulingga ◽  
Suherman Suherman
Keyword(s):  
3D Modeling ◽  
Integrated Circuit ◽  
Return Loss ◽  
Bandpass Filter ◽  
Coplanar Waveguide ◽  
Modeling Technique ◽  
Microwave Integrated Circuit ◽  
Electromagnetic Modeling ◽  
Coupled Line ◽  
Monolithic Microwave Integrated Circuit

Electromagnetic modeling technique on monolithic microwave integrated circuit (MMIC) coplanar waveguide (CPW) multilayer have been developed to accurately model the Parallel Coupled-Line Bandpass Filter. The 3D modeling technique shows the simulation results that are optimum. Several simulation steps have been demonstrated and compared on the design of Parallel Coupled-Line Bandpass Filters. Based on the 3D modeling, S11-Return Loss and S21-Insertion Loss of -22.6 dB and and 2.94 dB are obtained respectively. In addition, it is shown the best frequency response from the design of the Parallel Coupled-Line Bandpass Filter.

Capacitor-Loaded Coupled Line Balanced Bandpass Filter

2020 ◽  
Author(s):  
Jiancheng Dong ◽  
Jin Shi ◽  
Kai Xu
Keyword(s):  
Bandpass Filter ◽  
Coupled Line

Design and analysis of a planar UWB bandpass filter with stopband characteristics using MMR technique

2021 ◽  
pp. 1-8
Author(s):  
Gaurav Saxena ◽  
Priyanka Jain ◽  
Y. K. Awasthi
Keyword(s):  
Return Loss ◽  
Group Delay ◽  
Bandpass Filter ◽  
Ground Plane ◽  
Cost Effective ◽  
Ultra Wideband ◽  
Defected Ground Structures ◽  
Ground Structures ◽  
Multi Mode ◽  
Mode Resonator

Abstract In this paper, a ultra-wideband (UWB) bandpass filter with stopband characteristics is presented using a multi-mode resonator (MMR) technique. An MMR is formed by loading three dumbbell-shaped (Mickey and circular) shunt stubs placed in the center and two symmetrical locations from ports, respectively. Three circular and arrowhead defected ground structures on the ground plane are introduced to achieve UWB bandwidth with a better roll-off rate. The proposed filter exhibits stopband characteristics from 10.8 to 20 GHz with a 0.4 dB return loss. The group delay and roll-off rate of the designed filter are <0.30 ns in the passband and 16 dB/GHz at lower and higher cut-off frequencies, respectively. The dimension of the filter is 0.74λg × 0.67λg mm2 and was fabricated on a cost-effective substrate. All simulated results are verified through the experimental results.

Compact Tri-Band Bandpass Filter Based on $\lambda/4$ Resonators With U-Folded Coupled-Line

2013 ◽  
Vol 23 (5) ◽  
pp. 258-260 ◽  
Author(s):  
Songbai Zhang ◽  
Lei Zhu
Keyword(s):  
Bandpass Filter ◽  
Coupled Line

scholarly journals DESIGN OF COMPACT ELECTRONICALLY-TUNED BANDPASS FILTER WITH SHARP REJECTION SKIRT USING THE TRANS-DIRECTIONAL COUPLED LINE

2020 ◽  
Vol 90 ◽  
pp. 127-133
Author(s):  
Xiaojian Guo ◽  
Shao-Jun Fang ◽  
Hongmei Liu ◽  
Zhongbao Wang
Keyword(s):  
Bandpass Filter ◽  
Coupled Line ◽  
Sharp Rejection
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