Compact Wideband Microstrip Parallel-coupled Line Band-pass Filter With Complementary Electric Field Coupled Resonators

In this paper, a dual band microstrip bandpass filter has been proposed utilizing three edge coupled resonators, interdigital stubs and DGS technique. To enhance the coupling degree, two interdigital coupled feed lines are employed in this filter. The suppressing cell consists of stepped impedance ladder type resonators, which provides a wide stopband. The proposed suppressing cell has clear advantages like low insertion loss in the passband and suitable roll off. The frequency response of the filter looks like a standard dual band band-pass filter. The filter exhibits a dual passband with resonant frequencies at 2.2GHz and 3.45GHz covers LTE1 and LTE22 bands.

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Design and Development of Filtering Antenna for S-Band Applications with High out-of-band Rejection

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

10.35940/ijitee.a1038.1191s19 ◽

2019 ◽

Vol 9 (1S) ◽

pp. 180-187

Keyword(s):

Antenna Array ◽

Patch Antenna ◽

Equivalent Circuit Model ◽

Design Procedure ◽

Pass Band ◽

Band Pass Filter ◽

Coupled Resonators ◽

Pass Filter ◽

Antenna Structure ◽

Band Pass

In this paper, the design, simulation and fabrication of a filtering antenna is proposed. The filtering antenna structure is, therefore, framed by integrating elements, such as the feed line, parallel coupled resonators and the microstrip patch antenna array. The combined elements are designed for third order Chebyshev band pass filter with a pass band ripple of 0.1 dB and the integrated structure is more suitable for different S-band (2 GHz – 4 GHz) wireless applications. The equivalent circuit model for the proposed filtering antenna structure is analysed and the design procedure of the filter is also presented in detail. The 1x2 rectangular patch antenna array acts both as a radiating element and also as the last resonator of the band pass filter. The proposed filtering antenna structure results in high out-of-band rejection, enhanced bandwidth and a gain of about 209 MHz and 1.53 dB. The fabricated result agrees well with the simulation characteristics

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UHF Band-Pass Filter Based on Parallel Coupled Resonators

Journal of Electrical Engineering & Electronic Technology ◽

10.4172/2325-9833.1000163 ◽

2018 ◽

Vol 07 (02) ◽

Author(s):

Mounir Belattar ◽

Mohamed Lashab ◽

Abdelaziz Benhabrou

Keyword(s):

Band Pass Filter ◽

Coupled Resonators ◽

Pass Filter ◽

Band Pass ◽

Uhf Band

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COMPACT MICROSTRIP BAND-PASS FILTER FOR EMI REDUCTION

Jurnal Teknologi ◽

10.11113/jt.v77.6301 ◽

2015 ◽

Vol 77 (12) ◽

Author(s):

Kabir Ibrahim Jahun ◽

Hussein Mohamed Hagi Hassan Abdirahman Mohamud Shire ◽

Ali Orozi Sougui ◽

S. H. Dahlan

Keyword(s):

Filter Design ◽

Stop Band ◽

Band Pass Filter ◽

Defected Ground Structure ◽

Coupled Line ◽

Pass Filter ◽

Filter Structure ◽

Coupled Lines ◽

Band Pass ◽

Compact Design

Compact microstrip band-pass filter design using parallel coupled lines is presented in this paper. The microstrip lines are calculated and constructed using CST studio with two input and output ports of the filter structure are printed over Defected Ground Structure (DGS).The proposed symmetrical structure offers a simple and compact design while exhibiting an improved stop-band characteristics in comparison to conventional coupled microstrip line filter structure. The simulation and measurements of 2GHz prototype band pass filter are presented. The measured result agrees well with the simulation data. Compared with conventional parallel coupled line band pass filter, the second, third and fourth spurious responses are suppressed; in addition, the size of the prototype filter circuit is reduced up to 20.8%.

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