Design of Microstrip Lowpass Filter with Sharp Roll-off using Elliptical and Radial Resonators

Frequenz ◽  
2017 ◽  
Vol 71 (7-8) ◽  
Author(s):  
Gholamreza Karimi ◽  
Saeedeh Lotfi ◽  
Hesam Siahkamari
Keyword(s):  
High Performance ◽  
Stop Band ◽  
Lowpass Filter

AbstractA new microstrip lowpass filter with sharp roll-off and high suppression level in stop-band is presented. To achieve the lowpass filter with high performance, coupled T-shaped, elliptical and radial resonators are adopted. New formulas for calculating

Compact lowpass filter with wide stop-band using coupled-line hairpin unit

2010 ◽  
Vol 46 (1) ◽  
pp. 88 ◽  
Author(s):  
F. Wei ◽  
L. Chen ◽  
X.-W. Shi ◽  
Q.-L. Huang ◽  
X.-H. Wang
Keyword(s):  
Stop Band ◽  
Lowpass Filter ◽  
Coupled Line

High performance microstrip transverse resonance lowpass filter

2013 ◽  
Vol 55 (5) ◽  
pp. 1149-1152 ◽  
Author(s):  
Anand K. Verma ◽  
Nainu P. Chaudhari ◽  
Ashwani Kumar
Keyword(s):  
High Performance ◽  
Lowpass Filter ◽  
Transverse Resonance

Compact LowPass Filter with Wide StopBand Using Non-Uniform Microstrip Resonant Cells

2012 ◽  
Vol 263-266 ◽  
pp. 15-19
Author(s):  
Yan Liang ◽  
Xiao Ming Wu ◽  
Bi Hua Tang ◽  
Yong Le Wu
Keyword(s):  
Microstrip Line ◽  
Photonic Bandgap ◽  
Impedance Matching ◽  
Stop Band ◽  
Cutoff Frequency ◽  
Harmonic Suppression ◽  
Lowpass Filter ◽  
Measurement Results ◽  
Better Than

In this paper, a novel compact microstrip lowpass filter is designed. The proposed filter which is etched on the 50 Ω microstrip line consists of four non-uniform 1-D microstrip photonic bandgap (PBG) cells with different cutoff frequency.. The demonstration lowpass filter with 2.2 GHz cutoff frequency is designed, fabricated and measured. The measurement results show that the band rejection effect is better than -20 dB from 2.8 GHz to 10 GHz, the insertion is less than 2 dB, and the length of filter is 5.6 cm long. Compared with the conventional filter, the proposed filter has smaller size. Meanwhile, it overcomes the problems of narrow stop-band and low harmonic suppression. Furthermore, the impedance matching is not need to be considered. This template explains and demonstrates how to prepare your camera-ready paper for Trans Tech Publications. The best is to read these instructions and follow the outline of this text.

Design of High-Performance Lowpass Filter Using Inter-Coupled Compact Microstrip Resonator Cells

2012 ◽  
Vol 487 ◽  
pp. 627-631
Author(s):  
Qing Hua Wu ◽  
Lin Li
Keyword(s):  
Transmission Line ◽  
High Performance ◽  
Bridge Structure ◽  
Lowpass Filter ◽  
Microstrip Resonator ◽  
Compact Structure ◽  
High Impedance ◽  
Design Structure ◽  
Final Design ◽  
In Series

This paper presents a high-performance lowpass filter (LPF) using periodical inter-coupled compact microstrip resonator cells (CMRCs) in series. The CMRC consists of high impedance transmission line and symmetrical T-shaped structure at both sides with ended transmission line arms. By using a bridge structure to introduce controllable inter-coupling between the adjacent tapered CMRC units, the proposed CMRC structure exhibits quasi-elliptic lowpass response with improved stopband performance. Final design of an exemplary LPF using proposed design structure and methodology verify the feasibility of the structure and its high performance including compact structure, low insertion loss, sharp transition and expanded stopband.

scholarly journals High-Performance Low-Pass Filter Using Stepped Impedance Resonator and Defected Ground Structure

Electronics ◽  
2019 ◽  
Vol 8 (4) ◽  
pp. 403 ◽  
Author(s):  
Jin Zhang ◽  
Ruosong Yang ◽  
Chen Zhang
Keyword(s):  
High Performance ◽  
Stop Band ◽  
Pass Band ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Low Pass ◽  
Stepped Impedance Resonator ◽  
Internal Coupling

A microstrip low-pass filter (LPF) using reformative stepped impedance resonator (SIR) and defected ground structure (DGS) is proposed in this paper. The proposed filter not only possesses the advantage of high frequency selectivity of SIR hairpin LPF with internal coupling, but also possesses the large stop-band (SB) bandwidth by adjusting the number and area of DGS units. The LPF proposed in this paper possesses the properties of miniaturization, wide SB, high selectivity, and low pass-band ripple (PBR) simultaneously. The characteristic parameters of the proposed LPF is that: the pass-band (PB) is 0~2 GHz, the PBR is 0.5 dB, the SB range is from 2.4 GHz to 9 GHz when the attenuation is under 20 dB, and the maximal attenuation could reach 45 dB in the SB. The size of this proposed LPF is 0.13 λ × 0.09 λ ; λ is the corresponding wavelength of the upper PB edge frequency of 2 GHz.

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