Design of a Compact Wilkinson Power Divider With High Order Harmonics Suppression

Xu, Xin; Tang, Xin

doi:10.2528/pierl14110501

Cited by 9 publications

(5 citation statements)

References 14 publications

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“…In 2 , applying transmission line segments to two transformers results in suppressing the nth-order harmonics, but using this technique enhances the occupied area of this PD. In 3 , by using parallel coupled lines with one end connected in series with an open stub a PD with above 37 dB rejection for the second, third and fourth spurious harmonics and almost 20% miniaturization have been presented. To achieve a PD with better slow-wave factor in 4 , crossing bond wires have been employed which have resulted in better than 40 dB rejection for the third and fifth harmonics and 50% size reduction.…”

Section: Introductionmentioning

confidence: 99%

Miniaturized equal/unequal Wilkinson power dividers capable of harmonic suppression utilizing microstrip π-shaped resonators modified by lumped elements

Abdipour,

Makki

2024

Sci Rep

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In this paper, modified π-shaped resonator composed of both microstrip transmission lines and lumped elements are employed to design a Wilkinson power divider. Utilizing these resonators leads to designing a compact divider featuring a selectable operating frequency with optional power division ratio and very wide-range harmonic suppression. To vary the operating frequency and the power division ratio, the values of just the utilized lumped elements are changed without manipulating the dimensions of microstrip lines. As a design sample, a miniaturized divider capable of operating at four frequencies i.e., 0.5, 1.0, 1.5 and 2 GHz with optional equal or unequal power division and harmonic suppression ability at each of these frequencies is designed and simulated. Finally, as a feasible sample, another Wilkinson power divider which can optionally operate at 700 MHz with equal power division or 1.2 GHz with unequal power division is designed and implemented. Based on the measurement results, the spurious harmonics from 2nd to 25th in the 700 MHz-divider and 2nd to 15th in the 1.2 GHz-divider are suppressed. Moreover, almost 96% and 93% size reduction at 700 MHz and 1.2 GHz, respectively, are achieved. The S21 and S31of the unequal divider are − 8.8 and − 3.73 dB, which indicate an unequal 3.2:1 power division.

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Section: Introductionmentioning

confidence: 99%

Miniaturized equal/unequal Wilkinson power dividers capable of harmonic suppression utilizing microstrip π-shaped resonators modified by lumped elements

Abdipour,

Makki

2024

Sci Rep

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“…However, all the above techniques are not capable of reducing the circuit size as well as suppressing harmonics to a greater extent. In [10][11][12][13], different low-pass filters and compact microstrip resonator cells are also used to reduce the circuit size as well as suppress the harmonics. Compact filtering characteristics of power divider are also studied in [14] with harmonic suppression.…”

Section: Introductionmentioning

confidence: 99%

Compact Wilkinson Power Divider With Higher Order Harmonics Suppression for Lte Application

Kumar¹,

Islam²,

Sen³

et al. 2019

PIER Letters

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This paper presents a compact Wilkinson power divider (WPD) operating at 0.7 GHz (LTE band) with higher order harmonics suppression based on step impedance shunt stubs (SISSs) and defected ground structure (DGS). The quarter wavelength lines of conventional WPD are replaced by a host line loaded with a DGS and a pair of SISSs. The DGS and SISS of the proposed line serve as a high series inductance and shunt capacitance, respectively. Therefore, a compact quarter wavelength line is designed compared to conventional one. A prototype of the proposed power divider is designed based on the proposed line, which provides a size reduction of 71% as compared to conventional WPD (CWPD) at 0.7 GHz. In addition, upper edge selectivity is found to be 40 dB/GHz along with higher order harmonics suppression up to the 10th order (7 GHz) by a level better than 20 dB. The proposed power divider is experimentally verified with the simulated one and found to be same.

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“…The nonlinear property of the active circuit in transceiver system caused unwanted harmonics at higher frequencies, which need to be removed to avoid the driving capability of a receiver for down-conversion and interference between other microwave signals. In order to address the above concerns, researchers have proposed several techniques to reduce the circuit area as well as harmonics suppression [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21]. In [3], two open stubs are loaded at the middle of the quarter-wavelength branches of the power divider for the nth harmonics suppression.…”

Section: Introductionmentioning

confidence: 99%

“…Although the harmonics are well suppressed, the cost of circuit becomes high. Researchers are also adopted different techniques such as parallel coupled-lines (PCLs) [4], coupled tapered compact microstrip resonator cell [5], hook-shaped resonators [6], and coupled line with open stub [7,8] which have been used intentionally to significantly reduce the circuit size, but only a limited number of harmonics are suppressed. The pi (π) shape shunt-stub based artificial transmission lines are used to design a compact power divider comparable to conventional ones without harmonic suppression [9].…”

Section: Introductionmentioning

confidence: 99%

Design of Miniaturized Wilkinson Power Divider With Higher Order Harmonic Suppression for GSM Application

Kumar¹,

Islam²,

Parui³

et al. 2018

PIER C

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This paper presents a miniaturized Wilkinson power divider (WPD) with higher order harmonics suppression. The proposed power divider is designed for global system for mobile communication (GSM) application. The quarter wavelength lines of the conventional WPD are replaced by a stub loaded transmission line in order to miniaturize the circuit size. A solution, operating at 1.8 GHz center frequency, has shown that the 2nd and 3rd order harmonics are well suppressed by a level < −15 dB. Further, two differently shaped defected ground structures (DGS) are embedded with the design to suppress the higher order harmonics. Therefore, overall 31% size reduction is achieved, and higher order harmonics are suppressed up to the 9th order (16 GHz) by a level < −15 dB compared to reference WPD. The return loss and isolation performance of the proposed WPD are < −15 dB and < −20 dB, respectively.

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Design of a Compact Wilkinson Power Divider With High Order Harmonics Suppression

Cited by 9 publications

References 14 publications

Miniaturized equal/unequal Wilkinson power dividers capable of harmonic suppression utilizing microstrip π-shaped resonators modified by lumped elements

Miniaturized equal/unequal Wilkinson power dividers capable of harmonic suppression utilizing microstrip π-shaped resonators modified by lumped elements

Compact Wilkinson Power Divider With Higher Order Harmonics Suppression for Lte Application

Design of Miniaturized Wilkinson Power Divider With Higher Order Harmonic Suppression for GSM Application

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