Compact UWB Bandpass Filter With Ultra Narrow Notched Band

Luo, Xun; Ma, Jan; Ma, Kaixue; Yeo, Kiat Seng

doi:10.1109/lmwc.2010.2040212

Cited by 79 publications

(47 citation statements)

References 8 publications

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“…In one of the work, a coplanar waveguide (CPW) technique is used to obtain a notch band [14]. A ring resonator with two stepped impedance stubs as well as multiple slotline resonators has been used to create a notch band in UWB BPF [15] and [16].…”

Section: Introductionmentioning

confidence: 99%

A Compact UWB BPF with a Notch Band using Rectangular Resonator Sandwiched between Interdigital Structure

Gaurav¹,

Chauhan²

2017

IJECE

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This paper presents a compact design of an ultra wide band bandpass filters with a notch band using interdigital structure. The aim of the design is to reduce the size of filter, reduce the complexity of the design, and improve the performance of filter response. The proposed filter comprises of a rectangular resonator sandwiched between Interdigital structures, with rectangular slot as defected microstrip structure at the input and output ports. This design has been used for the first time to achieve the above aim. The advantage with this design is that, it does not use any via or defected ground structure. The insertion loss of proposed filter, in passband between 3.1 GHz to 10.8 GHz, is less than 0.7dB, and for the notched band it is 21.5 dB centred at 7.9 GHz. The proposed filter is fabricated, tested and compared with simulated results. The proposed design was small in size with less complexity, and shows performance better than the other designs available in the literatures at this dimension.

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Section: Introductionmentioning

confidence: 99%

A Compact UWB BPF with a Notch Band using Rectangular Resonator Sandwiched between Interdigital Structure

Gaurav¹,

Chauhan²

2017

IJECE

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“…Since the Federal Communication Commission (FCC) officially assigned an unlicensed use of ultrawideband (UWB) communication spectrum from 3.1 to 10.7 GHz in 2002, various UWB filters have been reported [9][10][11][12][13][14][15][16][17][18][19][20][21]. Due to the existing undesired narrow band radio signals such as WLAN that may interfere with the FCC UWB range, UWB filters with a notched band are desired.…”

Section: Introductionmentioning

confidence: 99%

“…Due to the existing undesired narrow band radio signals such as WLAN that may interfere with the FCC UWB range, UWB filters with a notched band are desired. The notched bands have been realized through various techniques, such as an embedded parasitic coupled line [12], an embedded λ/4 slotline [13,14], a simplified composite right-/left-handed resonator [15], and asymmetric parallel-coupled lines [16,17]. As the existing undesired parasitic signals in the FCC UWB range change from place to place and from time to time, UWB filters with tunable notched band have been studied [18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Compact UWB BPF with a Tunable Notched Band based on Triplemode HMSIW Resonator

Zhou¹,

Guo²,

Wu³

2016

IJWMT

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A novel triple-mode resonator based on the half-mode substrate integrated waveguide (HMSIW) structure is proposed to design the ultra-wideband (UWB) filters. The UWB filter topology is given by analyzing the resonant frequencies of the three modes and the signs of the coupling between the three modes and the input/output ports. With the filter synthesis method, a triple-mode UWB filter with passband from 3.1-10.6 GHz is effectively realized with two transmission zeros at the upper stopband. To block the existing undesired narrowband radio signals in FCC UWB range, a notched band can be easily generated and controlled by a loaded stub-capacitor. For demonstration, an UWB filter with a tunable notched band from 3.7 to 7.7 GHz and compact size is designed and fabricated. Both simulated and measured results indicate that the proposed new filter has the properties of wide tuning range of the notched band and sharp roll off.Index Terms: Filter; Half-mode substrate integrated waveguide (HMSIW); Tunable notch; Ultra-wideband (UWB).

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“…The UWB Bandpass filters (BPFs) are very necessary and important microwave components in the UWB communication system, but the interference to UWB communication system, which comes from the signals of WiMAX (3.30 GHz-3.70 GHz) and WLAN (5.15 GHz-5.825 GHz), is a troublesome problem [8], so the UWB BPFs with notch-bands is emergently required, and many effective methods are used to realize notched bands in UWB BPFs: in [9][10][11], the ring resonator, the slow wave coplanar waveguide (CPW) multiple-mode resonator and the CPW detached-mode resonator are used to design UWB BPFs with one notched band; in [12][13][14], the simpli?ed composite right/lefthanded (S-CRLH) resonator, the asymmetric coupling strip line, and multiple-mode resonator are applied to realize multi notched bands in UWB BPFs.…”

Section: Introductionmentioning

confidence: 99%

Novel Simplified Dual-Composite Right/Left-Handed Transmission Line and Its Application in Bandpass Filter With Dual Notch Bands

Wu¹,

Wang²,

Wang³

2013

PIER C

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Abstract-In this article, a novel simplified dual-composite right/lefthanded transmission line (S-D-CRLH-TL) is proposed according to the theory of dual-composite right/left-handed transmission line. The electromagnetic characteristics of S-D-CRLH-TL are analyzed by simulator, and the results indicate that the proposed structure has two narrow stopbands; they can be controlled by changing the geometry parameters of the structure. Then, a bandpass filter with dual notched bands is designed by using the unit cell of S-D-CRLH-TL, and the designed filter is simulated, fabricated and measured, the measured and simulated results are in good agreement with each other, showing that the two notched bands centered at 3.60 GHz and 5.50 GHz, and the bandwidths are 9.7% and 7.3%. This designed filter can avoid the interference to UWB communication system effectively, which comes from the signals of WiMAX and WLAN. Besides, in comparison with the other bandpass filter with notched-bands, the designed filter has good electromagnetic performances.

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Compact UWB Bandpass Filter With Ultra Narrow Notched Band

Cited by 79 publications

References 8 publications

A Compact UWB BPF with a Notch Band using Rectangular Resonator Sandwiched between Interdigital Structure

A Compact UWB BPF with a Notch Band using Rectangular Resonator Sandwiched between Interdigital Structure

Compact UWB BPF with a Tunable Notched Band based on Triplemode HMSIW Resonator

Novel Simplified Dual-Composite Right/Left-Handed Transmission Line and Its Application in Bandpass Filter With Dual Notch Bands

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