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

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.

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

Bulletin of Electrical Engineering and Informatics ◽

10.11591/eei.v8i2.1386 ◽

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.

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Hilbert-shaped complementary single split ring resonator and low-pass filter with ultra-wide stopband, excellent selectivity and low insertion-loss

AEU - International Journal of Electronics and Communications ◽

10.1016/j.aeue.2011.02.012 ◽

2011 ◽

Vol 65 (11) ◽

pp. 901-905 ◽

Cited By ~ 17

Author(s):

He-Xiu Xu ◽

Guang-Ming Wang ◽

Chen-Xin Zhang ◽

Qing Peng

Keyword(s):

Insertion Loss ◽

Ring Resonator ◽

Split Ring Resonator ◽

Split Ring ◽

Pass Filter ◽

Low Pass Filter ◽

Low Pass ◽

Low Insertion Loss ◽

Excellent Selectivity

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

Microwave and Optical Technology Letters ◽

10.1002/mop.24976 ◽

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

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

International Journal of Informatics and Communication Technology (IJ-ICT) ◽

10.11591/ijict.v9i1.pp24-30 ◽

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 λg× 0.158 λg, where λg 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.

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