scholarly journals Wide Band Stop Response Using Interdigital Capacitor/CSRR DGS in Elliptical Microstrip Low-Pass Filter

2020 ◽  
Vol 19 (4) ◽  
pp. 495-509
Author(s):  
Dristi Singhal ◽  
Shreyanshi Singh ◽  
Vipul Kaushal ◽  
Amit Birwal ◽  
Kamlesh Patel
Keyword(s):  
Wide Band ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Interdigital Capacitor ◽  
Low Pass

Stopband-Extended and Size-Miniaturized Low-Pass Filter Based on Interdigital Capacitor Loaded Hairpin Resonator with Four Transmission Zeros

Frequenz ◽  
2018 ◽  
Vol 72 (5-6) ◽  
pp. 221-226 ◽  
Author(s):  
Jia-Jia Wu ◽  
Lin Li
Keyword(s):  
Transmission Line ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Interdigital Capacitor ◽  
Transmission Zeros ◽  
High Impedance ◽  
Compact Size ◽  
Low Pass ◽  
Hairpin Resonator

AbstractIn this paper, a compact low-pass filter (LPF) with wide stopband is proposed based on interdigital capacitor loaded hairpin resonator. The structure composed of an upper high-impedance transmission line, a middle interdigital capacitor, and a pair of inter-coupled symmetrical stepped-impedance stubs. Detailed investigation into this structure based on even-odd mode approach reveals that up to four transmission zeros can be generated and reallocated by choosing the proper circuit parameters. And owing to the aid of transmission zeros, the fabricated quasi-elliptic LPFs experimentally demonstrate a wide 20dB stopband from 1.4fcto 5.1fcusing a compact size of only 0.005 λg2.

scholarly journals Miniaturized ultra-wideband coplanarwaveguide lowpass filter with extended stop band

2020 ◽  
Vol 19 (3) ◽  
pp. 1415
Author(s):  
Elmahjouby Sghir ◽  
Ahmed Errkik ◽  
Jamal Zbitou ◽  
Otman Oulhaj ◽  
Ahmed Lakhssassi ◽  
...  
Keyword(s):  
Stop Band ◽  
Wide Band ◽  
Ultra Wideband ◽  
Pass Filter ◽  
Entire Area ◽  
Low Pass Filter ◽  
Planar Circuits ◽  
Low Pass ◽  
Band Pass ◽  
Novel Design

<p class="Default">In this article, we propose a novel design of large rejected band of miniaturized ultra wide band (UWB) of a planar CPW low pass filter “LPF” based on the use of periodic elements of ‘e’ slots. The goal of this work is to develop a new structure of Low Pass Filter with the following criterion: Miniature, Compact and Easy for Fabrication. The Miniaturization of this structure is achieved by entering the 'e' slot  in etching area in the ground of CPW line, to save the standard gap of the adapted coplanar line. The designed coplanar LPF is a compact filter having a large band pass and extended stop band, with the possibility to associate easily with others RF and microwave planar circuits. The entire area of the proposed structure of CPW LPF is 14.3x20 mm<sup>2</sup>.</p>

Denoising Analysis on UWB Communication in Mine Tunnels

2013 ◽  
Vol 756-759 ◽  
pp. 3246-3249
Author(s):  
Hong Wei Zhang
Keyword(s):  
Wide Band ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Pulse Interference ◽  
Noise Simulation ◽  
Power Spectral ◽  
Wavelet Transform Modulus Maxima ◽  
Low Pass ◽  
Modulus Maxima ◽  
Signal Band

In the EMC interference environment of mine, we found the EMC is white noise and pulse interference. The UWB signal pulses is short and signal power spectral density distributed in wide band is very low. This article mainly proposes a de-noising method of Wavelet transform modulus maxima in signal band, focused on the traditional low-pass filter that can only remove the outside-band noise. Simulation results show that the scheme can effectively retain the signal singularity based on information to achieve obvious noise reduction

scholarly journals Design of a Wide-Band Microstrip Filtering Antenna with Modified Shaped Slots and SIR Structure

Inventions ◽  
2020 ◽  
Vol 5 (1) ◽  
pp. 11 ◽  
Author(s):  
Yasir I. A. Al-Yasir ◽  
Hana’a A. Alhamadani ◽  
Ahmed S. Kadhim ◽  
Naser Ojaroudi Parchin ◽  
Ameer L. Saleh ◽  
...  
Keyword(s):  
High Speed ◽  
Design Procedure ◽  
Wide Band ◽  
Impedance Bandwidth ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Transmission Zeros ◽  
Low Pass ◽  
High Speed Data ◽  
Good Agreement

This paper presents a new compact microstrip filtering antenna with modified shaped slots to improve the impedance bandwidth. The proposed microstrip filtering antenna consists of three parts: the monopole radiating patch antenna; the Stepped Impedance Resonator (SIR) filter; and the feeding microstrip line. The designed structure is achieved on one-sided glass epoxy FR-4 substrate with dielectric constant εr = 4.4 and thickness h = 1.6 mm. The design procedure of the proposed filtering antenna starts from the second-order Chebyshev low pass filter (LPF) prototype. The achieved results show an excellent performance of S11-parameter with broadside antenna gain on +z-direction. Having two transmission zeros at 5.4 GHz and 7.7 GHz, good skirt selectivity and a wide-band impedance bandwidth of about 1.66 GHz makes the designed filtering antenna suitable for high-speed data communications. Both the simulation results generated by using the Computer Simulation Technology (CST) software package and the measurement achieved by using a vector network analyzer (HP 8510C) and the anechoic chamber show good agreement.

Quelques applications de la réflexion frustrée en optique instrumentale

1975 ◽  
Vol 53 (18) ◽  
pp. 1743-1748 ◽  
Author(s):  
P. Cielo ◽  
C. Delisle
Keyword(s):  
Light Beam ◽  
Optical System ◽  
Beam Splitter ◽  
Wide Band ◽  
Internal Reflection ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Low Pass

It is shown how the transmission of an optical system based on frustrated internal reflection may be modified if one makes use of the dispersion in the input prism. Two examples are considered, a low pass filter and a wide band beam splitter. It is also shown that by using birefringent substances one can correct the inequality which is usually observed between the transmission of the parallel and perpendicular components of a nonpolarized light beam which traverses an optical system based on frustrated internal reflection.[Journal translation]

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