Design of High-Selectivity Asymmetric Three-Way Equal Wideband Filtering Power Divider

Zhu, Chuanming; Zhang, Jian

doi:10.1109/access.2019.2913314

Cited by 23 publications

(10 citation statements)

References 22 publications

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“…The main contribution of this paper lies on the formulation for calculating the values of the J-inverter, J1 shown in Fig. 1 using (3). The formulation ensures that the input power from CR is distributed through the two channel filters in the ratio of 1:1.…”

Section: Circuit Model Designmentioning

confidence: 99%

“…Several authors have proposed various design techniques for achieving FPDs. [3], [4] proposed FPDs achieved by replacing the quarter-wavelength transformers in a Wilkinson power divider with bandpass filters. Two-way integrated FPDs with equal output power ratio have been proposed and achieved in [5]- [7], while those with unequal or arbitrary power ratios have been reported in [8]- [10].…”

Section: Introductionmentioning

confidence: 99%

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Symmetric 3dB Filtering Power Divider with Equal Output Power Ratio for Communication Systems

Nwajana

Otuka

Ebenuwa

et al. 2020

2020 International Conference on Electrical, Communication, and Computer Engineering (ICECCE)

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This paper presents a two-way filtering power divider (FPD) with an equal output power ratio of 1:1. This implies that each of the FPD output port would receive 50% of the power at the input port. To achieve miniaturisation, a common square open-loop resonator is used to distribute energy between the two integrated Chebyshev bandpass filters. In addition to distributing energy, the common resonator also contributes one pole to each integrated bandpass filter (BPF), hence, reducing the number of individual resonating elements used in achieving the integrated FPD. To demonstrate the proposed design technique, a prototype FPD centred at 2.6 GHz with a 3 dB fractional bandwidth of 3% is designed, simulated and presented. The circuit model and microstrip layout results of the FPD show good agreement. The microstrip layout simulation responses show that a less than 1.1dB insertion loss and a greater than 16.5dB in-band return loss were achieved. The overall footprint of the integrated FPD is 37mm by 13mm (i.e. 0.32λg x 0.11λg, for λg = guided-wavelength of the 50Ω microstrip line at 2.6 GHz). The integrated FPD reported in this paper shows some promising merits when compared to similar devices recently reported in literature.

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Section: Circuit Model Designmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Symmetric 3dB Filtering Power Divider with Equal Output Power Ratio for Communication Systems

Nwajana

Otuka

Ebenuwa

et al. 2020

2020 International Conference on Electrical, Communication, and Computer Engineering (ICECCE)

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“…But they are incapable of eliminating DC harmonics. The second category is the PDs based on the narrow-band 5 – 7 , dual-band 8 and wide-band BPF 9 – 11 . Unequal WPD (UWPD) are another category for unequal signal division 12 – 21 .…”

Section: Introductionmentioning

confidence: 99%

Narrow-band power dividers with wide range tunable power-dividing ratio

Zarghami

Hayati

2022

Sci Rep

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This paper presents two narrow-band power dividers with a wide range power-dividing ratio based on the two new controlling insertion loss methods, which are low-impedance line and coupling capacitor. Initially, a narrow-band BPF is designed based on the equivalent circuit model and LC equivalent circuit. Then, using the surface current density, it is determined by which part of BPF structure the insertion loss (IL) can be controlled at center frequency. The tunable Wilkinson power dividers (TWPDs) are designed based on IL control components to create a wide range of power-dividing ratios, using only two DC voltages. The center frequency of first designed TWPD is 2.5 GHz, and the power-dividing ratio can be controlled up to 1:45 by variation of two DC voltages from 0 to 8 V. Since the structure of TWPDs are symmetric, the inverse voltages results in the inverted divided power between the output ports. The center frequency of second designed TWPD is 2.52 GHz, and power-dividing ratio can be controlled up to 1:134 by variation of two DC voltages from 1.7 to 4 V. Two proposed TWPDs are fabricated and measured. Comparisons of the measured and simulated results are presented to verify the theoretical predictions.

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“…Due to the characteristics of power dividing, power dividers and couplers have been widely studied. To apply to different systems, conventional power dividing components have been improved for bandwidth enhancement, 1,2 size reduction, 3,4 harmonic suppression, 5 and dual‐band operation 6,7 . In addition, an arbitrary power division ratio (PDR) can increase the system's flexibility.…”

Section: Introductionmentioning

confidence: 99%

A novel balanced‐to‐unbalanced branch‐line coupler with large power division ratio

Zhu

Wang

Han

et al. 2021

Int J RF Mic Comp-Aid Eng

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A novel balanced‐to‐unbalanced branch‐line coupler with a large power division ratio (PDR) is proposed in this paper. The proposed coupler consists of six transmission‐line sections, which can be easily synthesized with the prescribed PDR. By changing the electrical lengths of two transmission lines, a large PDR range can be obtained without the use of high‐impedance transmission lines. The closed‐form design equations are provided and discussed. To verify the proposed circuit, a coupler prototype with the PDR of 20 dB and the center frequency of f0 = 1.0 GHz is designed and fabricated. Simulation and measurement results are in good agreement. When the balanced port A is excited, the measured differential‐mode to single‐ended transmission coefficients at f0 for the unbalanced ports D and C are |SsdDA| = −0.28 dB and |SsdCA| = −20.02 dB, respectively, which meet the desired PDR. The measured |SddAA| at f0 is −33.6 dB with a −10‐dB bandwidth of about 12.7% from 0.933 to 1.059 GHz. The |SscDA| and |SscCA| are less than −29.5 dB with a −18‐dB bandwidth of 22.4% from 0.924 to 1.157 GHz.

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Design of High-Selectivity Asymmetric Three-Way Equal Wideband Filtering Power Divider

Cited by 23 publications

References 22 publications

Symmetric 3dB Filtering Power Divider with Equal Output Power Ratio for Communication Systems

Symmetric 3dB Filtering Power Divider with Equal Output Power Ratio for Communication Systems

Narrow-band power dividers with wide range tunable power-dividing ratio

A novel balanced‐to‐unbalanced branch‐line coupler with large power division ratio

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