Ultra-wideband band-pass filter with dual narrow notched bands based on dual-mode stepped impedance resonator

2013 ◽  
Vol 55 (4) ◽  
pp. 727-730 ◽  
Author(s):  
Feng Wei ◽  
Lei Chen ◽  
Zhu Dan Wang ◽  
Xiao Wei Shi
Keyword(s):  
Ultra Wideband ◽  
Band Pass Filter ◽  
Dual Mode ◽  
Pass Filter ◽  
Band Pass ◽  
Stepped Impedance Resonator

scholarly journals Design of dual-mode SIR bandpass filter based on shorting pin for wireless communication applications

2020 ◽  
Vol 18 (3) ◽  
pp. 1375
Author(s):  
Jenan Ayad Namiq ◽  
Mustafa A. Jalil
Keyword(s):  
Wireless Communication ◽  
Bandpass Filter ◽  
Band Pass Filter ◽  
Dual Mode ◽  
Coupled Line ◽  
Pass Filter ◽  
Shorting Pin ◽  
Band Pass ◽  
Stepped Impedance Resonator ◽  
Insertion Losses

<p id="docs-internal-guid-6a9909c3-7fff-4ac4-3e3a-a2f823e1246f" dir="ltr"><span>A new design of microstrip dual mode band-pass-filter (BPF) by using stepped impedance resonator (SIR) based on shorting pin is proposed. The designed structure use two U-shaped tri-sections SIR resonators coupled to each other and a two coupled line feeding ports each of 50 ohm impedance. Shorting pins are used to excite the upper frequency passband in the re   sponse of the filter due to current distribution perturbation at the locations of the shorting pins.  For demonstration, WLAN (5.2-5.7 GHz) and GSM (1.85-1.99 GHz) and Advanced Wireless Services (AWS) (1.71-1.755 GHz). The return losses are -32.469 dB and -26.18 dB respectively at the operating frequencies of the filter.  The results of  insertion losses of the filter is 0.37 and 0.24 dB during the operating bands and more than 25 dB which consider a good out-of- band rejection. </span></p>

scholarly journals W‐band dual‐band waveguide band‐pass filter using dual‐mode cavities

2018 ◽  
Vol 54 (25) ◽  
pp. 1444-1446
Author(s):  
Jianfei Chen ◽  
Sheng Zhang ◽  
Chao Zhang ◽  
Yuehua Li
Keyword(s):  
Dual Band ◽  
Band Pass Filter ◽  
Dual Mode ◽  
Pass Filter ◽  
W Band ◽  
Band Pass

scholarly journals A Planar Quad-band Band-Pass Filter Employing Dual-Mode Band-Stop Resonators

2021 ◽  
Author(s):  
Yi Wu ◽  
Erwan Fourn ◽  
Philippe Besnier
Keyword(s):  
Band Pass Filter ◽  
Dual Mode ◽  
Pass Filter ◽  
Band Pass

Reconfigurable dual-mode band-pass filter with switchable bandwidth using PIN diodes

2014 ◽  
Vol 7 (6) ◽  
pp. 655-660 ◽  
Author(s):  
Photos Vryonides ◽  
Symeon Nikolaou ◽  
Sangkil Kim ◽  
Manos M. Tentzeris
Keyword(s):  
Insertion Loss ◽  
Center Frequency ◽  
Band Pass Filter ◽  
Dual Mode ◽  
Pin Diodes ◽  
Pass Filter ◽  
Physical Size ◽  
Wireless Applications ◽  
Band Pass ◽  
Dc Bias

A reconfigurable band-pass filter with switchable bandwidth, for wireless applications is demonstrated using a dual-mode microstrip square-loop resonator. The proposed filter has been designed on Rogers RO4003C and achieves switchable bandwidth by changing the length of two tuning stubs with the implementation of two strategically placed p-i-n diodes as switching elements. The filter was designed with a center frequency of 2.4 GHz and the two distinct operation states have bandwidths, 113 MHz (4.8%) with an insertion loss of 1.2 dB and 35 MHz (1.5%) with an insertion loss of 1.5 dB. The physical size of the fabricated reconfigurable filter including the implementation of the DC bias lines is comparable to the size of a conventional filter.

Miniaturized Bandpass Filter with Wide Stopband using Spiral Configuration of Stepped Impedance Resonator

Frequenz ◽  
2018 ◽  
Vol 72 (9-10) ◽  
pp. 455-458 ◽  
Author(s):  
Vivek Singh ◽  
Vinay Kumar Killamsetty ◽  
Biswajeet Mukherjee
Keyword(s):  
Bandpass Filter ◽  
Short Circuit ◽  
Band Pass Filter ◽  
Pass Filter ◽  
Transmission Zeros ◽  
Quarter Wavelength ◽  
Rejection Level ◽  
Compact Size ◽  
Band Pass ◽  
Stepped Impedance Resonator

Abstract In this letter, a miniaturized Band Pass Filter (BPF) with wide stopband centered at 0.350 GHz for TETRA band applications is proposed using a Spiral Short Circuit quarter wavelength Stepped Impedance Resonator (SSC-SIR) and a stub loaded on feed line for enhancement of rejection level in the stopband. Spiral configuration of the resonator is used for the miniaturization of BPF. The proposed BPF provides a 3dB fractional bandwidth of 13.7 % with two transmission zeros in the lower and upper stopband to provide good selectivity and four transmission zeros which provide wide stopband upto 6.86f0. Proposed BPF has a very compact size of 0.064λg×0.062λg.

Dual-mode high gain and high-Q active RF band pass filter

2013 ◽  
Author(s):  
Shoeib Rahmatollahi ◽  
Bashir Fotouhi ◽  
Abumoslem Jannesari
Keyword(s):  
High Gain ◽  
Band Pass Filter ◽  
Dual Mode ◽  
Pass Filter ◽  
High Q ◽  
Band Pass
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