A compact ultra-wide stopband, low insertion loss, and sharp cutoff low-pass filter

2010 ◽  
Vol 52 (3) ◽  
pp. 568-570
Author(s):  
Shu-Hong Fu ◽  
Chuang-Ming Tong ◽  
Xi-Min Li ◽  
Kai Shen
Keyword(s):  
Insertion Loss ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Low Pass ◽  
Cutoff Low ◽  
Low Insertion Loss ◽  
Sharp Cutoff

A low insertion loss low-pass filter based on single comb-shaped spoof surface plasmon polaritons

2019 ◽  
Vol 11 (08) ◽  
pp. 792-796
Author(s):  
Luping Li ◽  
Lijuan Dong ◽  
Peng Chen ◽  
Kai Yang
Keyword(s):  
Surface Plasmon ◽  
Insertion Loss ◽  
Return Loss ◽  
Comparison Result ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Low Pass ◽  
Low Insertion Loss ◽  
Lower Insertion Loss ◽  
Single Comb

AbstractThis paper presents a low insertion loss low-pass filter based on the spoof surface plasmon polariton (SSPP) with single comb-shape. Compared with traditional ones, the proposed filter provides lower insertion loss and return loss by optimizing the structural parameters of the mode conversion and SSPP parts. According to the measurement results, the average insertion loss of the fabricated filter is 0.41 dB and the return loss of which at the near-zero-hertz band is <−25.9 dB. The S parameter comparison result between the unoptimized and optimized filters demonstrates that the optimized filter provides lower insertion loss and return loss, smaller size, and better out-of-band rejection. The dispersion comparison result reveals the reasons behind the improved performances. The better performances of the optimized filter proves that breaking the regularity of traditional SSPP filters is beneficial to the filter's performances.

scholarly journals Low insertion loss of surface mount device low pass filter at 700 MHz

2019 ◽  
Vol 8 (2) ◽  
pp. 382-388
Author(s):  
Khairil Anuar Khairi ◽  
Mohd Faizal Jamlos ◽  
Surentiran Padmanathan ◽  
Mohd Aminudin Jamlos ◽  
Muammar Mohamad Isa
Keyword(s):  
Transition Region ◽  
Insertion Loss ◽  
Power Supply ◽  
Cutoff Frequency ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Surface Mount ◽  
Low Pass ◽  
Low Insertion Loss ◽  
Image Frequency

The paper involved with the design, simulation and fabrication of 6th order elliptical-based Surface Mount Device (SMD) LPF with cutoff frequency at 700 MHz. Fabricated LPF is consisted of four PCB layers which components of SMD are soldered on the top layer. Another three layers is for grounding and shielding, power supply and grounding void. The four layers is crucial to avoid interference between components. The research has find out that the momentum simulation is definitely required to improve the signals response compared to a normal simulation by ADS software. The comparison between momentum simulated versus measured and normal simulated versus measured is 0.2 dB and 29 dB correspondingly. Such huge difference leads to conclusion that momentum simulation is saving time without having much struggles and efforts to get optimum readings. The Proposed SMD LPF has a very low insertion loss of 0.965dB with a transition region of 195 MHz which is good steepness to avoid any image frequency.

A Metamaterial-Based Terahertz Low-Pass Filter With Low Insertion Loss and Sharp Rejection

2013 ◽  
Vol 3 (6) ◽  
pp. 832-837 ◽  
Author(s):  
Zhihua Zhu ◽  
Xueqian Zhang ◽  
Jianqiang Gu ◽  
Ranjan Singh ◽  
Zhen Tian ◽  
...  
Keyword(s):  
Insertion Loss ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Low Pass ◽  
Low Insertion Loss ◽  
Sharp Rejection

scholarly journals Compact wide stopband microstrip lowpass filter using polygon patches and meandered lines

2020 ◽  
Vol 9 (1) ◽  
pp. 24
Author(s):  
Adel Musavy ◽  
Akram Sheikhi
Keyword(s):  
Insertion Loss ◽  
Cutoff Frequency ◽  
Lowpass Filter ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Rejection Level ◽  
Filter Size ◽  
Low Pass ◽  
Low Insertion Loss ◽  
Good Agreement

In this paper, a low pass filter based on T-Shaped resonator is presented. The T-Shaped resonator consists of meandered lines and rectangular patches. Also, the LC model and transfer function of the proposed resonator is presented. For suppression of spurious harmonics, a bandstop structure consists of hexangular patches and open stubs has been utilized. Finally, the wide stopband microstrip lowpass filter with cutoff frequency 2.72 GHz has been simulated, fabricated and measured. The LPF has good characteristics such as wide stopband and insertion loss lower than 0.18 dB in the passband region. The rejection level is less than -20 dB from 2.98 up to 21.3 GHz. The filter size is 10.5 mm×12.7 mm, or 0.131 λ<sub>g</sub>× 0.158 λ<sub>g</sub>, where λ<sub>g</sub> is the guided wavelength. The measured and simulated results of the filter is in good agreement with each other, which show the merits of low insertion loss and wide stopband.

A compact microstrip low-pass filter with ultra wide stopband using compact microstrip resonant cells

2016 ◽  
Vol 9 (5) ◽  
pp. 1023-1027 ◽  
Author(s):  
Saeed Roshani
Keyword(s):  
Transmission Line ◽  
Insertion Loss ◽  
Stop Band ◽  
Pass Filter ◽  
Low Pass Filter ◽  
High Impedance ◽  
Attenuation Level ◽  
Low Pass ◽  
High Rejection ◽  
Good Agreement

In this paper, a novel compact microstrip low-pass filter (LPF) with ultra wide stop band and sharp roll off, is proposed. In the proposed structure, a high impedance transmission line is loaded by compact microstrip resonant cells, which results in ultra wide stopband. The −3 dB cut-off frequency of filter is 1.5 GHz and the maximum insertion loss is <0.1 dB in the passband. The proposed LPF presents extremely wide stopband from 1.68 to 44 GHz, with more than the −20 dB attenuation level, which suppresses the 2nd to 29th harmonics with high rejection levels. The size of the proposed LPF is only 0.1 λg × 0.19 λg, which shows excellent size reduction. There is a good agreement between the simulated and measured results.

Compact miniaturized stepped impedance low-pass filter with sharp cutoff characteristic

2009 ◽  
Vol 51 (10) ◽  
pp. 2257-2258 ◽  
Author(s):  
Shu-Hong Fu ◽  
Chuang-Ming Tong ◽  
Xi-Min Li ◽  
Wei Zhang ◽  
Kai Shen
Keyword(s):  
Pass Filter ◽  
Low Pass Filter ◽  
Low Pass ◽  
Sharp Cutoff
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