Design of compact ultra-wideband microstrip bandstop filter using split ring resonator
02 Apr 2015-pp 0105-0108
TL;DR: A compact bandstop filter is designed with single and double ring split ring resonator and is simulated using HFSS, the full wave electromagnetic simulator, which gives a wide stopband response.
Abstract: This article presents the design of microstrip bandstop filter for ultra-wideband applications using split ring resonator. The emerging interest and ease of design for split ring resonator using microstrip transmission line technology has lead to this research. In this paper, a compact bandstop filter is designed with single and double ring split ring resonator and is simulated using HFSS, the full wave electromagnetic simulator. This structure gives a wide stopband response. The increase in the number of rings in the split ring resonator gives a sharp cut off improving the stopband performance. Simulation results show that for the bandstop filter using double ring split ring resonator, the sharp cut off is increased to −38.5dB compared to the single ring of −34.8dB and to −23dB from −18.5dB. The microstrip bandstop filter designed using single and double ring split ring resonator with ultra-wideband of 6GHz can be used for short range ultra-high speed communications in the frequency range of 4.3 to 10.4GHz. The compact filter size is 6×6mm excluding the feed.
Citations
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01 Jan 2016
TL;DR: In this paper, a nearly perfect metamaterial absorber with enhanced bandwidth and polarization insensitive was proposed, which is well suited for K-band applications like radar and satellite communications for uses in weather radar, imaging radar and air traffic control.
Abstract: In this paper, a nearly perfect metamaterial absorber is proposed with enhanced bandwidth and polarization insensitive. The proposed unit cell structure consists of outer split ring and inner asterisk shaped resonators printed on FR4 dielectric substrate. The designed metamaterial absorber gives broad bandwidth of 2.01 GHz and peak absorptivity of 99.98 and 99.94 % at 19.4 and 19.8 GHz, respectively. The simulation results prove the polarization insensitive behavior of the structure for oblique and normal incidence of the polarized waves at angles of 25° and 85°, respectively. The effective parameter is retrieved and the field distributions are studied. This metamaterial absorber is well suited for K-band applications like radar and satellite communications for uses in weather radar, imaging radar and air traffic control.
7 citations
TL;DR: In this paper, a waveguide optically driven terahertz wave modulator using a ring-shaped microstripline with a GaInAs photoconductive mesa structure was demonstrated.
Abstract: To improve wireless communications systems, it is desirable to seamlessly combine fiber-based optical and terahertz wireless communications systems. In this paper, we demonstrate a waveguide optically driven terahertz wave modulator using a ring-shaped microstripline with a GaInAs photoconductive mesa structure. In this device, terahertz wave modulation is performed by controlling the photo-generated carriers in the GaInAs mesa. As a result, a maximum extinction ratio of 16.8 dB in the terahertz band was obtained with a light irradiation of 15 dBm (32 mW), and the 3 dB modulation bandwidth was approximately 170 MHz.
4 citations
Cites background from "Design of compact ultra-wideband mi..."
...The ring-shaped microstripline described in this paper is a type of antenna operating in the terahertz band [18]....
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TL;DR: In this paper, a bandstop filter is proposed, where the resonant element is a slot that is folded to the shape of the letter U and embedded into the microstrip line so that no extra width is required.
Abstract: A bandstop filter is proposed, where the resonant element is a slot that is folded to the shape of the letter U and embedded into the microstrip line so that no extra width is required. Moreover, t...
2 citations
21 Sep 2022
TL;DR: In this article , a PIN diode is placed in the U-shaped slot of the 50 Ohm microstrip line to reduce the slot length to 1/4 the effective wavelength leading to considerable miniaturization compared with the filters that use resonant elements like rings or coupled open-circuited or short circuited stubs.
Abstract: This paper proposes a compact reconfigurable filter that uses a resonant element in the form of a folded slot. The U-shaped slot is embedded into the 50 Ohm microstrip line. Due to folding, the slot length is reduced to 1/4 the effective wavelength leading to considerable miniaturization compared with the filters that use resonant elements like rings or coupled open-circuited or short-circuited stubs. The presented design example at the WLAN frequency of 2.45 GHz can be configured between a band-reject and all-pass states, by placing a PIN diode at the centre of the slot. The proposed filter was investigated using the CST Studio Suite Software - 3D Electromagnetic Simulation. The obtained results showed low insertion loss in the band-pass state and high rejection in the stopband state. The tests of the fabricated prototype showed comparable results to the simulation one thus verifying the design.
References
More filters
10,495 citations
TL;DR: In this paper, it was shown that microstructures built from nonmagnetic conducting sheets exhibit an effective magnetic permeability /spl mu/sub eff/, which can be tuned to values not accessible in naturally occurring materials.
Abstract: We show that microstructures built from nonmagnetic conducting sheets exhibit an effective magnetic permeability /spl mu//sub eff/, which can be tuned to values not accessible in naturally occurring materials, including large imaginary components of /spl mu//sub eff/. The microstructure is on a scale much less than the wavelength of radiation, is not resolved by incident microwaves, and uses a very low density of metal so that structures can be extremely lightweight. Most of the structures are resonant due to internal capacitance and inductance, and resonant enhancement combined with compression of electrical energy into a very small volume greatly enhances the energy density at critical locations in the structure, easily by factors of a million and possibly by much more. Weakly nonlinear materials placed at these critical locations will show greatly enhanced effects raising the possibility of manufacturing active structures whose properties can be switched at will between many states.
8,135 citations
"Design of compact ultra-wideband mi..." refers methods in this paper
...The split ring resonator has stopband performance; hence it can be used for designing a good bandstop filter [9]....
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TL;DR: A composite medium, based on a periodic array of interspaced conducting nonmagnetic split ring resonators and continuous wires, that exhibits a frequency region in the microwave regime with simultaneously negative values of effective permeability and permittivity varepsilon(eff)(omega).
Abstract: We demonstrate a composite medium, based on a periodic array of interspaced conducting nonmagnetic split ring resonators and continuous wires, that exhibits a frequency region in the microwave regime with
8,057 citations
TL;DR: In this paper, a 50/spl Omega/ coplanar waveguide with split ring resonators (SRRs) etched in the back side of the substrate is presented, with the result of a sharp and narrow rejection band in the vicinity of the resonant frequency of the rings.
Abstract: A novel compact stop band filter consisting of a 50 /spl Omega/ coplanar waveguide (CPW) with split ring resonators (SRRs) etched in the back side of the substrate is presented. By aligning SRRs with the slots, a high inductive coupling between line and rings is achieved, with the result of a sharp and narrow rejection band in the vicinity of the resonant frequency of the rings. In order to widen the stop band of the filter, several ring pairs tuned at equally spaced frequencies within the desired gap are cascaded. The frequency response measured in the fabricated prototype device exhibits pronounced slopes at either side of the stop band and near 0 dBs insertion loss outside that band. Since SRR dimensions are much smaller than signal wavelength, the proposed filters are extremely compact and can be used to reject frequency parasitics in CPW structures by simply patterning properly tuned SRRs in the back side metal. Additional advantages are easy fabrication and compatibility with MMIC or PCB technology.
237 citations
"Design of compact ultra-wideband mi..." refers methods in this paper
...The SRR structure can be of any shapes like circle, square, rectangle, hexagon etc. Earlier SRR designs were realized by waveguide technology [8]....
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TL;DR: In this article, complementary split ring resonators are used to design a compact, low insertion loss (IL), low pass filter with sharp cut-off, and a prototype filter implementing area is 0.23 lambdagtimes0.09 lambda g, Lambdag being the guided wavelength at 3-dB cutoff frequency (fc) 1.887GHz.
Abstract: Complementary split ring resonators are used to design compact, low insertion loss (IL), low pass filter with sharp cut-off. A prototype filter implementing area is 0.23 lambdagtimes0.09lambda g, lambdag being the guided wavelength at 3-dB cut-off frequency (fc) 1.887GHz. Maximum IL is within 0.5dB up to 1.717GHz and 20-dB stopband extends up to 3.4fc
88 citations
"Design of compact ultra-wideband mi..." refers methods in this paper
...The complementary SRR and SRR were widely used in the design of low pass filter, band pass filter for its good performance compared to conventional filters [4]-[7]....
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