An Approach for Multi-Band Bandpass Filter Design Based on Asymmetric Half-Wavelength Resonators

Li, Xiuping; Wang, Huisheng

doi:10.2528/pier13031504

Cited by 8 publications

(17 citation statements)

References 20 publications

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“…The structure of multi-band filter using asymmetric half-wavelength resonators with eight shunt open stubs is shown in Figure 1 [3]. It consists of upper section and lower section, where each section consists of microstrip lines 6 and L c in addition to a coupling capacitor S where L 3 is the summation of L 3a and L 3b .…”

Section: Filter Design Based On Asymmetric Half-wavelength Resonatorsmentioning

confidence: 99%

“…The substrate parameters are: height, h = 0.78 mm, relative dielectric constant, ε r = 2.2 and loss tangent, tan δ = 0.001. Using the filter specification, the first step is to calculate the fundamental resonance frequency, f r using Equation (2) and λ g using Equation (3). Start the simulation with initial guess for L 1 , L 2 and L 3 that satisfy Equation (1) and the lengths L, L 4 , L 5 , L 6 and S are also chosen.…”

Section: Design Proceduresmentioning

confidence: 99%

“…f r is calculated as [4][5][6]: Figure 1. The tri-band filter using asymmetric half-wavelength structure with eight shunt open stubs [3]. The guided wavelength, λ g is calculated as:…”

Section: Filter Design Based On Asymmetric Half-wavelength Resonatorsmentioning

confidence: 99%

“…Based on this transformation and these design equations, tri-band filters can be designed to meet any desired filter specifications. The reference filter design is based on the asymmetric half-wavelength resonator where the equations of transmission zeros are derived [2,3]. This paper is organized as follows: the analysis and design steps of tri-band filter using asymmetric half-wavelength resonators structure with shunt open stubs are given in Section 2.…”

Section: Introductionmentioning

confidence: 99%

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Novel Transformation to Design Tri-Band Filters

Kareem¹,

El-Tager²,

Ibrahim³

et al. 2015

PIER C

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Abstract-This paper introduces novel derived transformation equations to design Tri-band filters. The design utilizes the approach adopted for tri-band bandpass filter design based on asymmetric halfwavelength resonator. The obtained optimized filter by this approach is used as a reference, and the proposed transformation is applied to calculate the new filter design hardware parameters that satisfy its given specifications. The reference tri-band filter is designed to have: insertion better than 1.3 dB and return loss less than −10 dB at the resonance frequencies 1.4 GHz, 4 GHz and 5.6 GHz for L-Band DAB, Radar (G-band) and Radar (C-band) applications, respectively. To verify the transformation technique two tri-band filters are designed. The first tri-band filter is for WVL, WiMAX and WiLAN while the second tri-band filter is for UMTS, WiLAN and X-band Satellite applications. The momentum simulations for these filters show that the resulting filters specifications are: the insertion loss is better than 1.3 dB and the return loss is less than −10 dB at the resonance frequencies 1.3 GHz, 3.6 and 5.7 GHz for the first one. While the insertion loss is better than 1.4 dB and the return loss is less than −10 dB at the resonance frequencies 1.9 GHz, 5.35 GHz and 8.25 GHz for the second filter, respectively. A set of prototype of the final design of the proposed filters with optimal parameters was fabricated for experimental verification. The RT 5880 substrate is utilized in this design All the results are obtained using circuit and momentum simulation of the Agilent Design Simulator (ADS) package and the performance characteristics have been measured using the Rohde & Schwarz ZVB20 vector 4 port network analyzer. Analysis and comparison of the obtained results show that all the simulated and the measured results agree well.

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Section: Filter Design Based On Asymmetric Half-wavelength Resonatorsmentioning

confidence: 99%

Section: Design Proceduresmentioning

confidence: 99%

“…f r is calculated as [4][5][6]: Figure 1. The tri-band filter using asymmetric half-wavelength structure with eight shunt open stubs [3]. The guided wavelength, λ g is calculated as:…”

Section: Filter Design Based On Asymmetric Half-wavelength Resonatorsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Novel Transformation to Design Tri-Band Filters

Kareem¹,

El-Tager²,

Ibrahim³

et al. 2015

PIER C

View full text Add to dashboard Cite

show abstract

“…A variety of approaches to design microstrip dual-band or multi-band bandpass filters have been proposed [1][2][3][4][5][6][7][8][9]. One of the methods to achieve multi-band response with compact size and high performance is to employ the stepped impedance resonators (SIRs) [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Novel Design of a Compact Triple-Band Bandpass Filter Using Short Stub-Loaded Sirs and Embedded Sirs Structure

Zhang²,

Li³

et al. 2013

PIER

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Abstract-A novel compact planar triple-band bandpass filter using two sets of short stub-loaded stepped impedance resonators (SSLSIRs) and a pair of embedded stepped impedance resonators (ESIRs) has been proposed. The SSLSIRs can adjust the bandwidths of the corresponding passbands over a wide range, and the ESIRs employing non 0 • -feed coupled structure with mixed electric and magnetic coupling can obtain an extra transmission zero. The embedded resonators structure can further miniaturize the dimensions of the whole triple-band filter. The operating frequencies of the SSLSIRs and ESIRs are designed for the applications of the WLAN (2.45/5.2 GHz) and WiMAX (3.5 GHz) systems, respectively. The simulated and measured results are both presented and show good agreement.

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Design of single- and dual-band BPFs using folded 0° feed structures and embedded resonators

Zobeyri

Eskandari

2018

AEU - International Journal of Electronics and Communications

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An Approach for Multi-Band Bandpass Filter Design Based on Asymmetric Half-Wavelength Resonators

Cited by 8 publications

References 20 publications

Novel Transformation to Design Tri-Band Filters

Novel Transformation to Design Tri-Band Filters

Novel Design of a Compact Triple-Band Bandpass Filter Using Short Stub-Loaded Sirs and Embedded Sirs Structure

Design of single- and dual-band BPFs using folded 0° feed structures and embedded resonators

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