Wideband Tunable In-Phase Power Divider Using Three-Line Coupled Structure

Guo, Lei; Zhu, He; Abbosh, Amin

doi:10.1109/lmwc.2016.2562058

Cited by 57 publications

(29 citation statements)

References 12 publications

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“…The measured results show that a continuously tunable dividing ratio from 2:1 to 20:1 at the operating frequency from 1 to 1.55 GHz is obtained. 10 F.F* 1: Abbreviations: F.F*, fixed frequency; FTR*, frequency tuning range; ILs, insert loss; PDR, power division ratio; RLs, reture loss.…”

Section: Discussionmentioning

confidence: 99%

“…By introducing switches, the reconfigurable PDs were designed with several discrete modes in References 8 and 9. Subsequently, a tunable PD with continuous dividing ratios from 1:1 to 1:2.4 was achieved in Reference by using a three‐line‐coupled structure, on the basis of which two advanced center frequency, bandwidth, and power division ratio tunable filtering PDs were proposed in References 11 and 12. Nevertheless, we can see that although some researches have been done in tuning PDs, a T‐junction PD with both tunable operating frequency and wide continuous power ratio still worth exploring.…”

Section: Introductionmentioning

confidence: 99%

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A T‐junction power divider with tunable operating frequency and dividing ratio

Chai

et al. 2020

Micro & Optical Tech Letters

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This letter presents a T‐junction power divider (PD) with both tunable operating frequency and dividing ratio, simultaneously. The proposed design consists of two adjustable 90° phase shifters and a pair of shunt stubs loaded with two varactor diodes. The operating frequency can be tuned by controlling the varactor diodes loaded onto the 90° phase shifters. In addition, the tunable shunt stubs comprised of a short circuited and an open circuited stubs loaded with varactor diodes are employed to realize impedance matching and different dividing ratios at accurate operating frequencies. For verification, a prototype of the proposed PD with dimensions of 25.9 mm × 50 mm is designed, fabricated, and measured. The measured results show that the operating frequency can be tuned from 1 to 1.55 GHz, while the power dividing ratio can be tuned from 2:1 to 20:1. Good agreement between the simulation and measurement results is observed.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A T‐junction power divider with tunable operating frequency and dividing ratio

Chai

et al. 2020

Micro & Optical Tech Letters

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“…Assuming that the coupling coefficients between central line with two sidelines ( K 12 , K 13 ) are equal, the input impedance of three parallel‐coupled microstrip lines structure will be express as

Z_{in 1} = Z_{11} - 2 Z_{12}^{2} / ((), Z_{22} + Z_{23} + \frac{Z_{ins} Z_{0}}{Z_{0} + Z_{ins}})

where Z mn (m, n = 1, 2, 3) are elements in the impedance matrix of terminal‐shorted three parallel‐coupled microstrip lines structure, which is determined through the mode impedance Z kij ( k = 1, 2; i , j = oo, ee, eo) . As shown in Figure , Z ins on behalf of the input impedance of the SIS will be obtained by

Z_{ins} = Z_{a} \frac{j ((), Z_{a} \tan θ_{a} - Z_{b} \cot θ_{b})}{Z_{a} + Z_{b} \cot θ_{b} \tan θ_{a}}

…”

Section: Dual‐band Setb Fpdmentioning

confidence: 99%

A new dual‐band single‐ended‐to‐balanced filtering power divider

Tang

Wang

et al. 2020

Int J RF Microw Comput Aided Eng

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This article proposes a new dual-band single-ended-to-balanced (SETB) filtering power divider (FPD), which shows the excellent characteristics of wideband common-mode (CM) suppression and good selectivity. By employing the structure of double-sided parallel-strip line with a mid-inserted conductor and a T-shaped defected ground structure etched in the mid-inserted conductor, out-of-phase behavior and high CM suppression can be achieved successfully.Besides, to realize dual-wideband filtering performance and high selectivity, two pairs of step impedance stubs (SIS) loaded quarter-wavelength central line-terminal-shorted three parallel-coupled microstrip lines structure are adopted. Meanwhile, two pairs of resistors are introduced so as to realize excellent isolation. To verify effectiveness of the design method, a prototype of dualband SETB FPD which operates at 3.2 and 4.9 GHz is designed, fabricated, and tested. Final results exhibit that the new dual-band SETB FPD possess high selective dual-band differential mode response, wideband CM suppression, and excellent isolation between the balanced output ports. K E Y W O R D Sdouble-sided parallel-strip line (DSPSL), dual-band, filtering power divider, single-ended-tobalanced (SETB), step impedance stubs (SIS)

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“…Wilkinson and Gysel power divider are two typical power‐dividing structures with good isolation and good impedance matching . Many studies on power dividers have focused on dual‐band response, wideband, arbitrary power division ratio, out‐of‐phase output ports, and multiway . In order to further reduce the size and loss of the cascade circuit, filtering power dividers have been proposed and developed.…”

Section: Introductionmentioning

confidence: 99%

Design of a wideband filtering power divider with good in‐band and out‐of‐band isolations

Liu

Sun

et al. 2019

Int J RF Microw Comput Aided Eng

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In this article, a wideband filtering power divider with good in-band and out-of-band isolations is designed based on a hybrid Wilkinson and Gysel structure. To achieve a good in-band response, two additional in-band transmission poles can be introduced by installing the coupled-line structures at each port. By mounting a stepped impedance open stub at the input port, two transmission zeros are generated near the passband to improve the passband skirt. Furthermore, the out-of-band rejection and isolation are achieved by the other two transmission zeros, which are produced by the open stub and the three coupled-line sections mentioned above. Additionally, a good in-band isolation is realized by the isolation resistor between output ports. For the demonstration, a wideband filtering power divider centered at 1.5 GHz with a 56% fractional bandwidth and 20-dB isolation is designed and fabricated. The simulated and measured results are in good agreement with each other. K E Y W O R D Sfiltering power divider, Gysel, isolation, wideband, Wilkinson

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Wideband Tunable In-Phase Power Divider Using Three-Line Coupled Structure

Cited by 57 publications

References 12 publications

A T‐junction power divider with tunable operating frequency and dividing ratio

A T‐junction power divider with tunable operating frequency and dividing ratio

A new dual‐band single‐ended‐to‐balanced filtering power divider

Design of a wideband filtering power divider with good in‐band and out‐of‐band isolations

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