A Low-Pass Filter of Wide Stopband with a Novel Multilayer Fractal Photonic Bandgap Structure

A novel, multilayer fractal PBG is presented here as the substrate for a microstrip line and the resulting configuration builds a low-pass filter of wide stopband. Experimental results in comparison with the corresponding two filters with monolayer PBG show that the proposed filter drastically enhances the width of the stopband.

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Design of an Ideal Low Pass Microstrip Line Filter Using the Defected Ground Structure

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.876.133 ◽

2018 ◽

Vol 876 ◽

pp. 133-137

Author(s):

Ping Cheng Chen ◽

Chung Long Pan ◽

J.D. Huang ◽

S.H. Hong

Keyword(s):

Frequency Response ◽

Microstrip Line ◽

Geometric Shape ◽

Center Frequency ◽

Defected Ground Structure ◽

Ground Structure ◽

Pass Filter ◽

Low Pass Filter ◽

Ansoft Hfss ◽

Low Pass

A design and simulation for low pass microstrip line filter with defected ground structure has been researched, the main purpose is with the simplest method to design an ideal low pass filter. In this paper, simulated soft (Ansoft HFSS V.6.0) used to be simulated the frequency response under different geometric shape of DGS. The results show good performance of a low pass filter with DGS. Final, a low pass filter with DGS design and fabricated, The properties are shown as flow: center-frequency: 7.28G, S21:-47dB, cut-off frequency: 5.88GHz.

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Study of a Low-Pass Filter in Microstrip Line Applying Modal Analysis in the Spectral Domain

10.1109/euma.1990.336212 ◽

1990 ◽

Cited By ~ 4

Author(s):

A. Casanueva ◽

J.L. Garcia ◽

A. Tazon

Keyword(s):

Modal Analysis ◽

Microstrip Line ◽

Spectral Domain ◽

Pass Filter ◽

Low Pass Filter ◽

Low Pass

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CMOS CDBA-Based Inverse Filter Structure

International Journal of Innovative Technology and Exploring Engineering - Special Issue ◽

10.35940/ijitee.c8976.019320 ◽

2020 ◽

Vol 9 (3) ◽

pp. 2226-2231

Keyword(s):

Cmos Technology ◽

Experimental Results ◽

Band Pass Filter ◽

Inverse Filter ◽

Pass Filter ◽

Low Pass Filter ◽

Filter Structure ◽

Low Pass ◽

Band Pass ◽

High Pass

This paper presents a voltage-mode(VM) tunable multifunction inverse filter configuration employing current differencing buffered amplifiers (CDBA). The presented structure utilizes two CDBAs, two/three capacitors and four/five resistors to realize inverse low pass filter (ILPF), inverse high pass filter (IHPF), inverse band pass filter (IBPF), and inverse band reject filter(IBRF) from the same circuit topology by suitable selection(s) of the branch admittances(s). PSPICE simulations have been performed with 0.18µm TSMC CMOS technology to validate the theory. Some sample experimental results have also been provided using off-the-shelf IC AD844 based CDBA.

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Synthesis and Analysis of Electronically Adjustable Fractional-Order Low-Pass Filter

Journal of Circuits System and Computers ◽

10.1142/s0218126618500329 ◽

2017 ◽

Vol 27 (02) ◽

pp. 1850032 ◽

Cited By ~ 12

Author(s):

Jan Dvorak ◽

Lukas Langhammer ◽

Jan Jerabek ◽

Jaroslav Koton ◽

Roman Sotner ◽

...

Keyword(s):

Current Mode ◽

Experimental Results ◽

Current Gain ◽

Behavioral Models ◽

Output Current ◽

Pass Filter ◽

Low Pass Filter ◽

Active Elements ◽

Current Follower ◽

Low Pass

A proposal of a fractional ([Formula: see text])-order low-pass filter is presented in this paper. The proposed filter operates in the current-mode and it is designed using Multi-Output Current Followers (MO-CFs), Dual-Output Current Follower (DO-CF), Dual-Output Adjustable Current Amplifier (DO-ACA) and Adjustable Current Amplifiers (ACAs) as active elements within the presented topology of the filter. The filter possesses ability to electronically control its order and also the pole frequency by changing the current gain of current amplifiers (ACAs) already present in the structure. Three different values of the order and pole frequency of the proposed low-pass filter were tested as an example. Design of the proposed filter is supported by simulation and experimental results. Simulations of the circuit are carried out in PSPICE simulator with behavioral models of used active elements. The experimental laboratory measurements are performed with the help of available devices forming equivalent circuits. Simulations and experimental results of the electronical control of the order and pole frequency are compared in this contribution.

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