Coupled Strip Transmission Line with Three Center Conductors

Yamamoto, S.; Azakami, Takashi; Itakura, K.

doi:10.1109/tmtt.1966.1126304

Cited by 57 publications

(21 citation statements)

References 11 publications

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“…Moreover, parallel coupled-lines and interdigital coupled-lines are widely used in bandpass filter design to reject the lower and upperstopbands due to their bandpass properties [20][21][22][23][24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Rotationally Symmetric Coupled-Lines Bandpass Filter With Two Transmission Zeros

Wong¹,

Wang²,

Chen³

et al. 2013

PIER

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Abstract-A rotationally symmetric short-circuited stub-loaded structure is proposed to design a microstrip-line bandpass filter with two transmission zeros near the lower and upper cut-off frequency edges of operating millimeter-wave bands. Furthermore, interdigital coupled-lines and additional resonators are integrated into the proposed rotationally symmetric bandpass filter to improve the out-of-band rejection. As design examples, the in-band and out-of-band performances of two filter prototypes using single layer microstrip-lines are designed and experimentally examined. The measured results show that the filter without any interdigital coupledlines achieves a passband insertion loss of 0.97 dB at 40 GHz and out-ofband rejection of larger than 23 dB, while the filter with the interdigital coupled-lines realizes the suppressions in lower and upper-bands of, respectively, larger than 30 dB and 19 dB for the overall insertion loss of 2.1 dB at 40 GHz.

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Section: Introductionmentioning

confidence: 99%

Rotationally Symmetric Coupled-Lines Bandpass Filter With Two Transmission Zeros

Wong¹,

Wang²,

Chen³

et al. 2013

PIER

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“…For quarter-wave long symmetric five-conductor coupled line, the following relations hold for the currents and voltages at the terminal of each conductor line (refer to Fig. 1 (a) for the notation of currents and voltages) [4,5]: where Y mn 's are admittance parameters determined by capacitances and phase velocity (v p ) as follows:…”

Section: Analysis Of Three-way Power Dividermentioning

confidence: 99%

Compact three-way planar power divider using five-conductor coupled line

Kim

Jeon

Jeong

2011

IEICE Electron. Express

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Abstract:In this paper, a planar three-way power divider with compact size is presented using quarter-wave long five-conductor couple line. It is analytically proved that the proposed structure allows the performance of three-way power dividers. Based on the derived equations and simulation, the three-way power divider is designed and measured at 2.0 GHz. The measurement shows excellent performance with insertion loss of 0.2 dB, and return loss and isolation better than 20 dB at a design frequency.

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“…Although they are accurate and adaptable to many configurations, the quasi-TEM analysis requiring less computational effort can yield useful results in the design phase, but very few analytical methods were found on the multiconductor coplanar system. An exact analysis for the three coupled strip lines in a homogeneous dielectric material was studied in [12] through conformal mapping techniques. More coupled striplines shielded in a metal box were studied in [13].…”

Section: Introductionmentioning

confidence: 99%

Analytical Investigation of Periodic Coplanar Waveguides

Chen¹,

Huff²

2013

PIER M

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Abstract-This paper presents an analytical formula to evaluate even-and odd-mode characteristics of infinitely parallel coplanar waveguides (CPW) with the same dimensions in each CPW, given name as periodic coplanar waveguides (PCPW). The analysis yields a closed-form expression based on the quasi-TEM assumption and conformal mapping transformation. Calculated results show that both the even-and odd-mode characteristic impedances are in good agreements with the results generated by numerical solvers and available experimental data. The results are important especially for highly demand on miniaturization of circuit design to place multiple CPWs in parallel.

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Coupled Strip Transmission Line with Three Center Conductors

Cited by 57 publications

References 11 publications

Rotationally Symmetric Coupled-Lines Bandpass Filter With Two Transmission Zeros

Rotationally Symmetric Coupled-Lines Bandpass Filter With Two Transmission Zeros

Compact three-way planar power divider using five-conductor coupled line

Analytical Investigation of Periodic Coplanar Waveguides

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