A new design of wilkinson power divider using radial stubs featuring size reduction and bandwidth enhancement with physical isolation

Chang, Tso-Jung; Huang, Tiao-Yuan; Hsu, Heng‐Tung

doi:10.1109/wamicon.2017.7930265

Cited by 3 publications

(2 citation statements)

References 5 publications

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“…Additionally, the need for additional transmission lines to connect the WPDs with other circuits leads to an increased insertion loss and circuit size. Various modifications have been proposed to separate the output ports, such as incorporating complex isolation networks within quarter-wave transmission lines [27][28][29][30][31][32] or introducing additional transmission lines between the output ports [33,34]. However, these methods are bulky and do not facilitate the implementation of a BPF response.…”

Section: Introductionmentioning

confidence: 99%

Harmonic Suppressed Wilkinson Power Divider Using Parallel Resonant Shunt Stub

Jang,

Jeong

2024

Electronics

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This paper proposes a harmonic-suppressed Wilkinson power divider (HS WPD) utilizing parallel resonant shunt stubs (PRSSs). PRSSs are integrated into the conventional WPD by adding functionalities such as bandpass filtering, harmonic suppression, and physical port separation. The resonance conditions and design equations of the PRSS are theoretically derived and verified through circuit simulations. Using the PRSS, we designed an HS WPD operating at 1 GHz. The fabricated HS WPD demonstrated an insertion loss of 3.2 dB at the fundamental frequency, with a wide 3 dB bandwidth of 129%. The harmonic suppression levels at the 2nd and 3rd harmonic frequencies are measured to be 21.0 dB and 25.8 dB, respectively. The measured input return loss at the fundamental frequency was 27.9 dB, whereas the output return loss was 24.6 dB. Additionally, the HS WPD demonstrates isolation levels at the fundamental, 2nd, and 3rd harmonic frequencies, with levels of 29.2 dB, 17.8 dB, and 47.1 dB, respectively. It also exhibited broadband isolation (>8.7 dB) across the frequency range of 100 kHz to 3.35 GHz. The PRSS design allows for the physical separation of the ports without requiring additional circuitry. Compared to previously reported PDs, the proposed design offers multiple functions in a compact size, making it highly suitable for various microwave systems.

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Section: Introductionmentioning

confidence: 99%

Harmonic Suppressed Wilkinson Power Divider Using Parallel Resonant Shunt Stub

Jang,

Jeong

2024

Electronics

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“…Such configuration provided additional degree of freedom in terms of the design and synthesis for the odd-mode bisected network. Thus, quite a lot of research efforts have been dedicated to the performance improvement of power dividers using complex INWs [15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Rigorous Analysis and Investigation of the Bandwidth Broadening Mechanism in a Compact Power Divider With Physical Port Isolation

et al. 2022

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This paper proposes a compact power divider with simultaneous physical port isolation and wideband operation based on the simple Wilkinson power divider (WPD) configuration. Rigorous analysis based on the even-and odd-mode bisected networks has been performed to investigate the relationship between the design parameters and the overall performance. Theoretical analysis revealed that the impedance and isolation bandwidth are directly related to the reflection coefficients of the even-(e) and odd-mode (o) bisected networks. Simultaneous broadening of the impedance and isolation bandwidth is possible through the optimum choice of design parameters which confines the trajectories of the e and o in the low constant-Q region on the Smith Chart. Experimental verification by the prototype designed at 1 GHz exhibited the widest overall system bandwidth (43.2%) and the lowest total electrical length (140.8 o ) as compared to the previous state-of-the-art WPD's with physical port isolation.INDEX TERMS bandwidth; even-mode; isolation network; odd-mode; physical port isolation; Wilkinson power divider

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