scholarly journals Ultra-wideband band-pass filter based on a multilayer strip-slot transition.

2021 ◽  
Vol 2021 (10) ◽  
Author(s):  
D.G. Fomin ◽  
◽  
N.V. Dudarev ◽  
S.N. Darovskikh ◽  
◽  
...  
Keyword(s):  
Ultra Wideband ◽  
Theoretical Research ◽  
Pass Band ◽  
Band Pass Filter ◽  
Network Analyzer ◽  
Pass Filter ◽  
Band Pass ◽  
Experimental Researches ◽  
Theoretical Results ◽  
Maximum Transmission

The paper presents the results of theoretical and experimental researches of an ultra-wideband bandpass filter (UWB BPF) based on a multilayer strip-slot transition. Theoretical results are obtained in two ways: 1) by designing an equivalent circuit of the UWB BPF where each element is presented in the form of a two-port network with the corresponding matrix of A-parameters and 2) by numerical simulation in a rigorous formulation of the electrodynamics problem. Experimental results were obtained on a sample of the UWB BPF using a vector network analyzer. The results of theoretical and experimental researches are in good qualitative and numerical agreement. The investigated UWB BPF has a relative pass band at a level of -3 dB relative to the maximum transmission coefficient equal to 49,2% according to experimental research and 51% according to theoretical research.

A highly selective UWB bandpass filter using stepped impedance stubs

2018 ◽  
Vol 10 (3) ◽  
pp. 301-307 ◽  
Author(s):  
Minjae Jung ◽  
Byung-Wook Min
Keyword(s):  
Return Loss ◽  
Bandpass Filter ◽  
Stop Band ◽  
Ultra Wideband ◽  
Pass Band ◽  
Band Pass Filter ◽  
The Novel ◽  
Pass Filter ◽  
Radial Stub ◽  
Band Pass

AbstractWe present a new ultra-wideband (UWB) band-pass filter (BPF) configuration with a stepped impedance short-circuited stub (SISS)-loaded triple-mode resonator (TMR) and stepped impedance radial stub (SIRS). The novel SISS-loaded TMR and SIRS improve the roll-off ratio at both ends. Even though this UWB BPF is based on a single resonator, the measured results show excellent in-band performance with a small insertion loss less than 0.6 dB and return loss greater than −16 dB. The proposed UWB BPF has sharp roll-off ratio of 96 and 43 dB/GHz, respectively, at the lower and upper edges of the pass-band, and a wide stop-band from 10.8 to 15.6 GHz with the rejection greater than 20 dB.

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 and Analysis of an Ultra–Wideband Band–Notched Band–Pass Filter

2015 ◽  
Vol 66 (2) ◽  
pp. 113-116 ◽  
Author(s):  
Navid Daryasafar ◽  
Saeid Hamidi ◽  
Gholam Reza Shahryari
Keyword(s):  
Transmission Lines ◽  
Communication Systems ◽  
Satellite Communication ◽  
Ultra Wideband ◽  
Pass Band ◽  
Band Pass Filter ◽  
Pass Filter ◽  
Notched Band ◽  
Band Pass ◽  
Coupled Transmission Lines

Abstract In this paper it is intended to design an ultra-wideband band-pass filter, using new models of coupled transmission lines. In this paper, by providing a new model of resonators, the bandwidth of band-pass filters (which are one of the most crucial elements in communication systems) will be moderately increased, while their size and volume decreases. In addition to the increase in bandwidth in these filters, due to the increasing usage of new satellite communication systems, the frequency response of these filters will be developed to utilize notch in the pass band, and an ultra-wideband band-pass filter with notch will be designed and analyzed.

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

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

scholarly journals Design of UWB Filter with WLAN Notch

2012 ◽  
Vol 2012 ◽  
pp. 1-4 ◽  
Author(s):  
Harish Kumar ◽  
MD. Upadhayay
Keyword(s):  
Circuit Simulation ◽  
Ground Plane ◽  
Stop Band ◽  
Simulation Software ◽  
Pass Band ◽  
Area Network ◽  
Band Pass Filter ◽  
Frequency Range ◽  
Pass Filter ◽  
Band Pass

UWB technology- (operating in broad frequency range of 3.1–10.6 GHz) based filter with WLAN notch has shown great achievement for high-speed wireless communications. To satisfy the UWB system requirements, a band pass filter with a broad pass band width, low insertion loss, and high stop-band suppression are needed. UWB filter with wireless local area network (WLAN) notch at 5.6 GHz and 3 dB fractional bandwidth of 109.5% using a microstrip structure is presented. Initially a two-transmission-pole UWB band pass filter in the frequency range 3.1–10.6 GHz is achieved by designing a parallel-coupled microstrip line with defective ground plane structure using GML 1000 substrate with specifications: dielectric constant 3.2 and thickness 0.762 mm at centre frequency 6.85 GHz. In this structure aλ/4 open-circuited stub is introduced to achieve the notch at 5.6 GHz to avoid the interference with WLAN frequency which lies in the desired UWB band. The design structure was simulated on electromagnetic circuit simulation software and fabricated by microwave integrated circuit technique. The measured VNA results show the close agreement with simulated results.

Gm-C Complex Band-Pass Filter with Tuning Circuit in 0.18μm CMOS

2012 ◽  
Vol 229-231 ◽  
pp. 1605-1608
Author(s):  
Xiang Ning Fan ◽  
Kuan Bao ◽  
Rui Wu ◽  
Jun Bo Liu
Keyword(s):  
Supply Voltage ◽  
Pass Band ◽  
Band Pass Filter ◽  
Voltage Measurement ◽  
Pass Filter ◽  
Measurement Results ◽  
Band Pass ◽  
Tuning Circuit ◽  
C Complex ◽  
Image Rejection Ratio

This paper presents a 0.18μm CMOS based Gm-C complex band-pass (CBP) filter with tuning circuit. Active-Gm-C structure with Nauta transconductor and phase-locked loop (PLL) architecture are adopted by the filter and the tuning circuit respectively which can achieve accurate frequency response. The layout size is 970μm×920μm. Under a 1.8V supply voltage, measurement results show that the pass-band gain and the ripple of the filter is 3.1dB and 3dB respectively. The bandwidth after tuning is 32.5MHz, image rejection ratio (IRR) is about 47dB, and the power dissipation of the filter is about 21.6mW.

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