A Novel Approach for Realizing 2.4/5.2 GHz Dual-Band BPFs using Twin-Spiral Etched Ground Structure

Chen, W.-N.; Chia, W.-K.

doi:10.1163/156856209788271014

Cited by 2 publications

(2 citation statements)

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“…For a filter using conventional resonators, to get a sharper roll-off, numbers of sections will be needed but at the cost of increased sizes and insertion losses. To get wide stopband and sharp roll-off responses, many new methods have been proposed, such as defected ground structure (DGS) [2][3][4][5][6][7][8][9] and electromagnetic band-gap (EBG) [10][11][12][13]. However, as we know, the etched ground of the DGS and periodic character of the EBG will cause radiation and larger size problems, respectively.…”

Section: Introductionmentioning

confidence: 99%

Compact, Broad-Stopband Lowpass Filters Using Sirs-Loaded Circular Hairpin Resonators

Yang

Xu²,

Qing³

et al. 2010

PIER

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A novel compact resonator for LPF is proposed in this paper. It is composed of a circular hairpin resonator and a pair of coupled parallel stepped impedance resonators (SIRs) inside. With the loaded SIRs, additional two transmission zeros can be introduced and adjusted easily to cancel the spurious responses for stopband extending, while do not change the filter size. Filters using one and two of the new cells were designed and measured. The two-cell LPF has an insertion loss less than 0.6 dB from DC to 1.6 GHz, including attenuation of double SMA transitions at both sides of the circuit which is about 0.3 dB and a wide −10 dB stopband from 2.5 to 13 GHz (corresponding to 146% normalized 10 dB stopband), but has a size of only 0.129λg × 0.073λg.

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Section: Introductionmentioning

confidence: 99%

Compact, Broad-Stopband Lowpass Filters Using Sirs-Loaded Circular Hairpin Resonators

Yang

Xu²,

Qing³

et al. 2010

PIER

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“…In modem wireless and mobile communication systems, filter with multiple passband have become one of the essential elements [1,2]. For the initial investigations, dual passband filter has been taken much more attention.…”

Section: Introductionmentioning

confidence: 99%

A Novel CPW Dual Passband Filter Using the Split-Modes of Loaded Stub Square Loop Resonators

Lin¹,

Shi²,

Wang³

et al. 2010

PIER Letters

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This paper presents a novel coplanar waveguide (CPW) dual passband filter using the split-modes of the loaded stub square loop resonators. With the CPW feeding line, two microstrip stub resonators built on the rear sides are used to suppress the first even resonance. The modes splitting characteristics of the proposed structure are analyzed. A dual passband filter covering center frequencies of 4.8 GHz and 6 GHz is fabricated to verify the validity of the methodology. Good agreement between simulated and measured results is demonstrated.

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A Novel Approach for Realizing 2.4/5.2 GHz Dual-Band BPFs using Twin-Spiral Etched Ground Structure

Cited by 2 publications

References 0 publications

Compact, Broad-Stopband Lowpass Filters Using Sirs-Loaded Circular Hairpin Resonators

Compact, Broad-Stopband Lowpass Filters Using Sirs-Loaded Circular Hairpin Resonators

A Novel CPW Dual Passband Filter Using the Split-Modes of Loaded Stub Square Loop Resonators

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