A miniaturized monolithic dual band filter using ceramic lamination technique for dual mode portable telephones

Miyake, Hideaki; Kitazawa, Shoichi; Ishizaki, Toshio; Yamada, Toshio; Nagatomi, Y.

doi:10.1109/mwsym.1997.602908

Cited by 254 publications

(205 citation statements)

References 5 publications

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“…Dual-band bandpass filters have gained great attention in wireless communication systems recently [5][6][7][8][9][10]. The initial type of dualband filter is simply designed by connecting two filter circuits with two different passbands [5].…”

Section: Introductionmentioning

confidence: 99%

Design of Cross-Coupled Dual-Band Filter With Equal-Length Split-Ring Resonators

Fan¹,

Liang²,

Dai³

2007

PIER

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Abstract-A compact dual-band bandpass filter using equal-length split-ring resonators (SRRs) is proposed in this paper. The tworesonance frequency response of equal-length split-ring resonator is described in detail. A cross-coupled dual-band filter with four equallength split-ring resonators is designed. Several finite out-of-band attenuation poles are realized to improve the selectivity of the proposed filter. The measurement of the filter is in good agreement with the simulation.

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Section: Introductionmentioning

confidence: 99%

Design of Cross-Coupled Dual-Band Filter With Equal-Length Split-Ring Resonators

Fan¹,

Liang²,

Dai³

2007

PIER

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“…Therefore, to reduce the volume and weight of communication circuits and equipments, many dual-band components, including antennas [1], couplers and filters [18,19], have recently received much attention and been developed. A number of publications have provided a variety of solutions to the realization of dual-band bandpass filter [2][3][4][5][6], which is a key component filtering unwanted frequency in RF systems [14].…”

Section: Introductionmentioning

confidence: 99%

“…Stepped impedance resonators (SIRs) structure of the dual-band bandpass filter, has been proposed, which is mainly utilizing the dual-band characteristic of SIR [3,16]. In [4], a dual-band bandpass filter, composed of two single-band bandpass filter using LTCC techniques is proposed. However, an additional circuit network is needed to combine these two filters.…”

Section: Introductionmentioning

confidence: 99%

Design of Novel Dual-Band Bandpass Filter With Microstrip Meander-Loop Resonator and CSRR DGS

Wu¹,

Mu²,

Dai³

et al. 2008

PIER

137

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Abstract-A novel dual-band bandpass filter with meander-loop resonator and complement split-ring resonator (CSRR) defected ground structure (DGS) is proposed in this letter. Microstrip meanderloop resonator and CSRR DGS are operated for respective passbands. Several finite attenuation poles in stopbands are realized to improve the selectivity of the proposed bandpass filter and isolation between the two passbands. Compact size, dual band and high selectivity characteristics are realized by this type of filter structure. The filter is evaluated by experiment and simulation with very good agreement.

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“…Dual-band bandpass filters have gained great attention in wireless communication systems recently [1][2][3][4][5]. The traditional design methods of dual-band filters are realized by connecting two filter circuits with two different passbands [1] or making use of the basic topology of a stopband filter [2,9].…”

Section: Introductionmentioning

confidence: 99%

“…The traditional design methods of dual-band filters are realized by connecting two filter circuits with two different passbands [1] or making use of the basic topology of a stopband filter [2,9]. However, these solutions suffer from high insertion loss and large overall size.…”

Section: Introductionmentioning

confidence: 99%

Design of Miniature Planar Dual-Band Filter With 0â° Feed Structures

Xue¹,

Chen²,

Dai³

et al. 2007

PIER

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Abstract-A novel dual-band planar filter is proposed in this paper. It is shown that the two transmission bands can be excited and designed using proposed resonators which combine different sizes of open-loop resonators. The main resonators control the low-band resonant frequency and the sub resonators control the high-band resonant frequency. With 0 • feed structures added, the frequency selectivity of the filter is greatly improved. And the proposed filter also has advantages as low insertion loss and miniature size. The measurement of the filter is in good agreement with the simulation.

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A miniaturized monolithic dual band filter using ceramic lamination technique for dual mode portable telephones

Cited by 254 publications

References 5 publications

Design of Cross-Coupled Dual-Band Filter With Equal-Length Split-Ring Resonators

Design of Cross-Coupled Dual-Band Filter With Equal-Length Split-Ring Resonators

Design of Novel Dual-Band Bandpass Filter With Microstrip Meander-Loop Resonator and CSRR DGS

Design of Miniature Planar Dual-Band Filter With 0â° Feed Structures

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