High‐performance filtering power divider with multiple transmission zeros

Bai, Yecheng; Xu, Kai‐Da

doi:10.1002/mop.31468

Cited by 13 publications

(5 citation statements)

References 6 publications

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“…To increase power, power combining circuits have improved greatly. Power combining circuits can be divided into filtering types, [1][2][3][4][5][6][7][8] ultra-wideband type [9][10][11][12][13][14][15] and reconfigurable type [16][17][18][19][20] based on traditional types.…”

Section: Introductionmentioning

confidence: 99%

Wideband signal combining circuit based on multichannel different‐/same‐frequency power combiner

Song,

Li,

Zhu

et al. 2023

Micro & Optical Tech Letters

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A wideband signal combining circuit with continuous bandwidth based on multichannel different‐/same‐frequency power combiner is presented. Two‐way signals with the same frequency can be combined to a higher power signal. Two‐way signals with different frequencies can be combined into a broadband signal. A stepped impedance resonator (SIR) is used as a multimode resonator. The wider bandwidth is got by SIR. And the selectivity of the two filtering channels is improved by the introduction of SIR stubs, which generate four transmission zeros on both sides of the passbands. The high 3‐dB point of the low‐frequency channel overlaps with the low 3‐dB point of the high‐frequency channel. Therefore, the output passband is continuous. The measured frequency ranges of two channels are 1.34–2.21 GHz/2.21‐2.87 GHz, respectively, and from 1.46 to 2.74 GHz, the input reflection coefficient is such that the return loss is higher than 15.5 dB. The insertion loss of the two channels is 0.71/1.18 dB, and the measured isolation is higher than 15.4 dB. The measured bandwidth of the combining signal is 1.5 GHz (1.34–2.84 GHz).

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Section: Introductionmentioning

confidence: 99%

Wideband signal combining circuit based on multichannel different‐/same‐frequency power combiner

Song,

Li,

Zhu

et al. 2023

Micro & Optical Tech Letters

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“…This PD can split the input signal into two parts equally, but it has a stopband with an inadequate suppression level. In, 8 the proposed PD designed for 2.6 GHz with two halfwavelength stubs and four pairs of coupled lines is presented that has a flat passband and eliminates undesirable signals, however, it occupies a large circuit area. In, 9 a compact power divider includes two open stubs, and one capacitor was presented, which suppressed third harmonic and used modified π-type resonators.…”

Section: Introductionmentioning

confidence: 99%

A compact Gysel power divider with ultra‐wide rejection band and high fractional bandwidth

Zonouri

Hayati

2021

Int J RF Microw Comput Aided Eng

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In this paper, one kind of miniaturized Gysel power divider (GPD) with ninth harmonic suppression is proposed. In this structure to weaken unwanted harmonics, radial and new trapezoidal-shaped resonators are placed instead of the quarter-wavelength transmission lines of the conventional GPD. Moreover, these resonators create eight transmission zeros and occupy small circuit sizes. For designing the proposed GPD, appropriate electrical lengths of transmission lines are selected. This GPD has high −15 dB fractional bandwidth, 71%, good isolation, > 15 dB, and compact sizes, 0.07 λ g ×0.22 λ g . The operating frequency of the designed power divider is 2.1 GHz that can be used in many WCDMA applications.

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“…It not only occupies a larger area but also exhibits a high insertion loss and a narrow stop band. Instead of a good isolation property and decent attenuation band performance, power dividers [11][12][13][14][15][16][17][18] suffer from a huge in-band insertion loss. Although the previous studies show satisfactory filtering and power splitting responses, very few of them can provide a wider attenuation band and good isolation performance.…”

Section: Introductionmentioning

confidence: 99%

Compact microstrip low‐pass filtering power divider with wide harmonic suppression

Sen

Moyra

2019

IET Microwaves, Antennas & Propagation

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A compact, low‐cost Wilkinson power divider (WPD) of 1.3 GHz (f0) operating frequency, with a low‐pass filtering response, is presented in this study. Power division and low‐pass filtering responses are both achieved by using two symmetrical units of interdigital line resonators (ILRs). Each square unit of ILR exhibits a low‐pass filtering response, with a minimum insertion loss of 0.3 dB. The dumbbell‐shaped, defected ground structures are introduced for widening the attenuation band by suppressing the harmonics up to 14 GHz (up to 10.76 f0) and also for miniaturising the circuit. An isolation resistor of 100 Ω is placed between two output ports of the WPD for obtaining good isolation. The operating frequency of the low‐pass filter is 2 GHz with an attenuation of −17 dB up to 20 GHz. The proposed structure is fabricated using low‐cost substrate material FR4. Both the low‐pass filter and the power divider are fabricated and measured. The electromagnetic‐simulated and measurement results are experimentally verified.

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High‐performance filtering power divider with multiple transmission zeros

Cited by 13 publications

References 6 publications

Wideband signal combining circuit based on multichannel different‐/same‐frequency power combiner

Wideband signal combining circuit based on multichannel different‐/same‐frequency power combiner

A compact Gysel power divider with ultra‐wide rejection band and high fractional bandwidth

Compact microstrip low‐pass filtering power divider with wide harmonic suppression

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