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

Fan, J. W.; Liang, Chuntao; Dai, Xi-Wang

doi:10.2528/pier07060904

Cited by 85 publications

(57 citation statements)

References 17 publications

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“…At first, we consider the problem faced in the first case of Section 3, for which R = 4, N = 4, θ 2 /θ 1 = 2.5 and ∆θ/θ 1 = 0.2, giving a transformer with monotonous step to step impedance variation. The input reflection coefficient absolute value |Γ in | of the microstrip transformer, computed via the full-wave analysis, is compared with the |Γ| given by Equation (8) in Fig. 10, where |Γ| and |Γ in | are displayed as functions of θ.…”

Section: Microstrip Transformersmentioning

confidence: 99%

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An Exact Synthesis Method for Dual-Band Chebyshev Impedance Transformers

Castaldi¹,

Fiumara²,

Gallina³

2008

PIER

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Abstract-We propose an exact synthesis method which allows the design of dual-band transformers with an arbitrary even number of uniform sections giving equi-ripple impedance matching in two separate bands centered at two arbitrary frequencies. This method is a generalization of the exact Collin-Riblet synthesis of Chebyshev single-band transformers. As compared to a single-band Collin-Riblet transformer encompassing both required passbands, the proposed design yields significantly better performance in terms of passband tolerance and width.

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Section: Microstrip Transformersmentioning

confidence: 99%

“…On the other hand, in many cases of practical interest (cellular/PCS, WLAN, GSM/DCS and other dual-band applications [6][7][8][9]) impedance matching over two separate bands can be required. So, in the last years various design methods for dual-band impedance transformers have been proposed [10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

An Exact Synthesis Method for Dual-Band Chebyshev Impedance Transformers

Castaldi¹,

Fiumara²,

Gallina³

2008

PIER

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show abstract

“…Planar filters have been widely used, such as coupled filters [1,2] and stepped-impedance resonators with transmission zeros [3,4]. They are attractive because of the planar structure and low fabrication cost.…”

Section: Introductionmentioning

confidence: 99%

Compact Interdigital Capacitor Coupled Dual-Behavior Resonator (Icdbr) Filter With Suppression of Spurious Responses

Wang¹,

Su²,

Zhang³

et al. 2013

PIER C

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Abstract-A compact interdigital capacitor coupled dual-behavior resonator (DBR) filter with high spurious responses suppression is proposed in this paper. The technique is based on two equivalent topologies of J-inverter and dual-line equivalent circuit of opencircuited stubs. The first compact equivalent topology capacitive inverter is a high pass structure, and consequently, the spurious responses can be suppressed effectively at low frequencies. The second equivalent topology π-network is employed in realizing a compact size and adding new transmission zeros dedicated to the spurious responses suppression at high frequencies. Further compactness is achieved with a dual-line equivalent circuit of open-circuited stubs. The relevant equations are given in the paper. Finally, a 3rd-order compact DBR filter is designed and measured. This structure has a high degree of miniaturization (83%) in comparison to the classical one. Measurement results show good agreement with the simulated ones.

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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%

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

Wu¹,

Mu²,

Dai³

et al. 2008

PIER

Self Cite

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

Cited by 85 publications

References 17 publications

An Exact Synthesis Method for Dual-Band Chebyshev Impedance Transformers

An Exact Synthesis Method for Dual-Band Chebyshev Impedance Transformers

Compact Interdigital Capacitor Coupled Dual-Behavior Resonator (Icdbr) Filter With Suppression of Spurious Responses

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

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