Metamaterial Resonator Based Wave Propagation Notch for Ultrawideband Filter Applications

Ali, Abdul Malik Mohd; Hu, Zhirun

doi:10.1109/lawp.2008.920964

Cited by 60 publications

(31 citation statements)

References 6 publications

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“…On the other hand, a metamaterial is applied to an ultra-wide band-pass filter with a low return loss of less than -10 dB to maintain the flatness of the pass band over a wide range. Further, the position of the CSRRs has an effect on the matching and shape of the stop-band, given that it alters the field distribution [4]. The layout and equivalent circuit of the CSRR cell, which is etched into the ground plane underneath the Transmission Line, is shown in Fig.…”

Section: Design Of the Ultra-wide Band-pass Filtermentioning

confidence: 99%

“…If the excitation electric field E is parallel to the axis of the rod medium, the propagated wave is stopped in the spatial frequency band and it exhibits negative permittivity. Further, if the excitation magnetic field H is perpendicular to the plane of the split-ring resonators, the propagated wave is stopped in the spatial frequency band and it exhibits negative permeability [3,4].…”

Section: Introductionmentioning

confidence: 99%

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Design of Ultra-wide Band-pass Filter Based on Metamaterials Applicable to Microwave Photonics

Lee

Shim

Moon

et al. 2012

Journal of the Optical Society of Korea

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We designed an ultra-wide band-pass filter applicable to microwave reflectometry for KSTAR (Korea Superconducting Tokamak Advanced Research) and to microwave photonics. The proposed ultra-wide band-pass filter exhibits a metamaterial structure characterized by a wide band, low insertion loss, and high skirt selectivity. The proposed filter is applied to enhance the linearity of reflectometry at the output of a VCO (voltage controlled oscillator). The pass-band of the proposed filter is observed at 18~28 GHz, and the out-of-band rejection is below 20 dB. Further, we constructed an unwrapped negative phase of S(2, 1) to verify the characteristics of the metamaterial. The under-and upper-band at lower limits of the pass-band are left-and right-handed, respectively. The group delay of the filter is less than 0.5 ns.

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Section: Design Of the Ultra-wide Band-pass Filtermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design of Ultra-wide Band-pass Filter Based on Metamaterials Applicable to Microwave Photonics

Lee

Shim

Moon

et al. 2012

Journal of the Optical Society of Korea

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“…In this section, several of these ideas have been adopted for use on passive RFID tags. Particularly, metamaterial-based elements (Ali & Hu, 2008;Ghadarghadr et al, 2008) have been incorporated into the design of printed antennas on a single ungrounded dielectric. The first design shown in the next section uses deformed-omega elements (Mishra et al, 2008) to introduce a series inductance to the port of the antenna that causes the antenna to resonate at a much lower frequency (Braaten et at., 2009a).…”

Section: Metamaterial-based Antennas For Passive Uhf Rfid Tagsmentioning

confidence: 99%

Design of Passive UHF RFID Tag Antennas Using Metamaterial-Based Structures and Techniques

Braaten¹,

Scheeler²

2010

Radio Frequency Identification Fundamentals and Applications Design Methods and Solutions

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“…Recently, a variety of UWB filters have been introduced via different methods and structures, e.g., nonperiodical shunt-stub loading [2,3], composite lowpass-highpass topology [4,5], cascaded broadside-coupling [6], and multiple-mode resonator (MMR) [7][8][9]. One general problem of UWB systems is a possible interference with relatively strong narrowband signals within the allocated UWB spectrum like those from wireless local-area network (WLAN) applications.…”

Section: Introductionmentioning

confidence: 99%

Design of Reconfigurable Miniaturized Uwb-BPF With Tuned Notched Band

Mohamed¹,

El-Shaarawy²,

Abdallah³

et al. 2013

PIER B

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Abstract-A new miniaturized ultra-wideband bandpass filter with embedded reconfigurable multiband frequency notch function was designed and implemented by embedding all the passive components into a printed circuit board with a high dielectric constant. The proposed filter consists of compact 2U-shaped DGS resonators shunt connected to parallel coupled lines to achieved frequency notch. To tune the notched band, suitable capacitor elements within the inner/outer U-DGS and RF PIN diode within the outer U-DGS are integrated. A curve fitting formula is derived to show the effect of the capacitor value on the center frequency of the notched band, which is decreased by 56.7%. These capacitors improved the quality factor and have the effect of reducing the filter size by 72% as compared to other filters. The RF PIN diode in the outer U-DGS acts as a switch to exhibit a band notch covering the bandwidth of the WLAN for IEEE 802.11 a/h at 5.5 GHz and RFID ISO 18000 series pars 5 in microwave (MW) which is set at 5.8 GHz, 6.1 GHz and 6.8 GHz, and the other bands. RF PIN diodes control the notched band and raises it from 5.25 GHz to 6.85 GHz (27%) or remove the band notched according to its positions. In order to validate the feasibility of the proposed structure, UWB BPF with center frequency of 6.85 GHz is designed, fabricated, and measured. The filter has passband from 3.2 GHz to 10.7 GHz and notched band designed to generate stop band from 5.25 to 6.85 GHz, and the two transmission zeros are observable at 2 GHz and 12.5 GHz, respectively by measurement. This paper shows the miniaturized filter with size 6.7 mm × 6.5 mm occupying a circuit area of about 0.41λ g by 0.39λ g . The measured results for the proposed filter are in good agreement with simulations and verify the excellent performance of the designed filter and the validity of the proposed approach.

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Metamaterial Resonator Based Wave Propagation Notch for Ultrawideband Filter Applications

Cited by 60 publications

References 6 publications

Design of Ultra-wide Band-pass Filter Based on Metamaterials Applicable to Microwave Photonics

Design of Ultra-wide Band-pass Filter Based on Metamaterials Applicable to Microwave Photonics

Design of Passive UHF RFID Tag Antennas Using Metamaterial-Based Structures and Techniques

Design of Reconfigurable Miniaturized Uwb-BPF With Tuned Notched Band

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