Compact microstrip ultra-wideband double/single notch-band band-pass filter based on wave's cancellation theory

2012 ◽  
Vol 6 (8) ◽  
pp. 862 ◽  
Author(s):  
M. Nosrati ◽  
M. Daneshmand
Keyword(s):  
Ultra Wideband ◽  
Band Pass Filter ◽  
Pass Filter ◽  
Notch Band ◽  
Band Pass

A compact UWB band-pass filter with a notch band using multi-mode stub-loaded resonators (MM-SLR)

2018 ◽  
Vol 10 (2) ◽  
pp. 227-233
Author(s):  
Gholamreza Karimi ◽  
Fatemeh Javidan ◽  
Amir Hossein Salehi
Keyword(s):  
Stop Band ◽  
Ultra Wideband ◽  
Pass Band ◽  
Band Pass Filter ◽  
Pass Filter ◽  
Notch Band ◽  
Compact Size ◽  
Mathematical Formulas ◽  
Band Pass ◽  
Multi Mode

AbstractIn this paper, an ultra-wideband (UWB) band-pass filter (BPF) with a sharp notch band is presented. The UWB BPF consists of modified elliptical-ring and multi-mode stub-loaded resonator (MM-SLR). By adding the asymmetric tight coupled lines resonator via input/output (I/O) lines, it can be achieved UWB band-pass response. With adding two bends to the middle resonator, a notch band at 6.86 GHz is created, so that it can be controlled using the mathematical formulas (MF). In the meantime, the equivalent circuit of the middle resonator is obtained using L–C analysis. Measured results of fabricated filter have the advantage such as ultra-wide pass band (flandfHof the defined UWB pass band are 3.776 and 10.42 GHz, which satisfy the requirements of FCC-specified UWB limits), compact size, low insertion loss <0.65 dB and the stop band of the proposed filter is from 11.1 to 16.32 GHz with attenuation of −39.8 to −42.14 dB, respectively. The proposed UWB filter is realized using the substrate with dielectric constant of 2.2 and substrate height of 0.787 mm. Experimental verification is provided and good agreement has been found between simulation and measurement results.

scholarly journals Design of a Broadband Band-Pass Filter with Notch-Band Using New Models of Coupled Transmission Lines

2014 ◽  
Vol 2014 ◽  
pp. 1-12 ◽  
Author(s):  
Navid Daryasafar ◽  
Somaye Baghbani ◽  
Mohammad Naser Moghaddasi ◽  
Ramezanali Sadeghzade
Keyword(s):  
Frequency Response ◽  
Transmission Lines ◽  
Band Pass Filter ◽  
Pass Filter ◽  
New Model ◽  
Notch Band ◽  
New Models ◽  
Basic Parameters ◽  
Band Pass ◽  
Coupled Transmission Lines

We intend to design a broadband band-pass filter with notch-band, which uses coupled transmission lines in the structure, using new models of coupled transmission lines. In order to realize and present the new model, first, previous models will be simulated in the ADS program. Then, according to the change of their equations and consequently change of basic parameters of these models, optimization and dependency among these parameters and also their frequency response are attended and results of these changes in order to design a new filter are converged.

scholarly journals Design of a Super Compact UWB Filter Based on Hybrid Technique with a Notch Band Using Open Circuited Stubs

2020 ◽  
Vol 9 (3) ◽  
pp. 39-46
Author(s):  
H. El Omari El Bakali ◽  
H. Elftouh ◽  
A. Farkhsi ◽  
A. Zakriti ◽  
M. El Ouahabi
Keyword(s):  
Coplanar Waveguide ◽  
Bottom Layer ◽  
Basic Structure ◽  
Ultra Wideband ◽  
Band Pass Filter ◽  
Hybrid Technique ◽  
Pass Filter ◽  
Delay Performance ◽  
Notch Band ◽  
Satellite Applications

This paper presents a new design of a super compact Ultra wideband (UWB) band-pass filter (BPF) with rejection of X-band satellite applications. For covering the UWB bandpass, the proposed filter is realized using hybrid technique which is achieved by using a Microstrip-Coplanar waveguide-Microstrip transition. The basic structure consists of a modified microstrip in the top layer and CPW in the bottom layer. Later, open-circuited stubs are embedded in the top to implement in-band transmission zeros (TZ) so as to circumvent interference. The simulated results show that the UWB bandpass filter has a high adaptation (S11 ≤ −18 dB) and insertion loss better than 0.4 dB at the passband. The impedance bandwidths are about 114% (3–11 GHz) with upper stopband extends to more than 14 GHz with a depth of greater than 38 dB. In addition, the UWB BPF shows a flat group delay performance with a variation of about 0.15 ns over the entire bandwidth. A prototype of the filter is fabricated and tested. Good agreement is achieved between measurement and simulation. The proposed UWB BPF is compact in size with overall dimensions of 14 by 9.2 mm2. Consequently, the obtained results prove that the presented filter is suitable for UWB wireless devices.

Hybrid lumped/distributed band-pass filter in IPD technology for ultra-wideband applications

2011 ◽  
Author(s):  
Alexandre Manchec ◽  
Claire Laporte ◽  
Cedric Quendo ◽  
Hilal Ezzeddine ◽  
Yann Clavet ◽  
...  
Keyword(s):  
Ultra Wideband ◽  
Band Pass Filter ◽  
Pass Filter ◽  
Band Pass

scholarly journals Band-pass filter-like antenna validation in an ultra-wideband in-car wireless channel

2015 ◽  
Vol 9 (4) ◽  
pp. 532-540 ◽  
Author(s):  
Ignacio J. Garcia Zuazola ◽  
William G. Whittow ◽  
Francisco Falcone ◽  
Leire Azpilicueta ◽  
Asier Perallos ◽  
...  
Keyword(s):  
Wireless Channel ◽  
Ultra Wideband ◽  
Band Pass Filter ◽  
Pass Filter ◽  
Band Pass

A Novel Three-Port Combiner Based on Coaxial Cavity

2012 ◽  
Vol 605-607 ◽  
pp. 1924-1928
Author(s):  
Su Nan Zhang ◽  
Qiang Ye ◽  
Chang Wei Luo
Keyword(s):  
Return Loss ◽  
Ultra Wideband ◽  
Band Pass Filter ◽  
The Novel ◽  
Pass Filter ◽  
Coaxial Cavity ◽  
Transmission Zero ◽  
Band Stop Filter ◽  
Band Pass ◽  
Good Agreement

In this paper, a novel three-port combiner based on coaxial cavity is presented, which consists of a band-pass filter with a transmission zero and a ultra-wideband band-stop filter, and the combiner is different to the conventional combiner based on microstrip or stripline. The design and simulated results show that the novel combiner has a good performance, which are insert loss more than -0.5dB and return loss less than -20dB between the GSM/DCS/TD band (800-2170MHz) and WLAN band (2400-2500MHz), the isolation in both bands less than -85dB, respectively. In addition, the performances of the novel combiner are demonstrated experimentally, the measured results have good agreement with simulated results.

A compact ultra-wideband band-pass filter with defected ground structure

2009 ◽  
Vol 51 (4) ◽  
pp. 979-981 ◽  
Author(s):  
Peng Chen ◽  
Feng Wei ◽  
Xiaowei Shi ◽  
Qiulin Huang
Keyword(s):  
Ultra Wideband ◽  
Band Pass Filter ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Pass Filter ◽  
Band Pass
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