Varactor tuned dual-band Wilkinson power divider

Draskovic, Drasko; Budimir, D.

doi:10.1109/aps.2009.5171938

Cited by 8 publications

(2 citation statements)

References 4 publications

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“…These features are suitable for the need and complex environmental condition. The main principle of traditional frequency-tunable microwave structure is that the characteristic impedance of the transmission line is continuously changed by inserted varactorsfor example and can construct parallel varactors [3], series varactors [4], or a mixture of the parallel and series varactors [5] in the transmission lines.…”

Section: Introductionmentioning

confidence: 99%

Frequency-Tunable Phase Inverter Based on Slot-Line Resonator

Liao¹,

Zhang²

2017

PIER Letters

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This paper describes a frequency-tunable phase inverter based on a slot-line resonator for the first time. The control circuit is designed and located on the defected ground. None of dc block capacitors are needed in the microstrip line. A wide tuning frequency range is accomplished by the use of the slot-line resonator with two varactors and a single control voltage. A 180-degree phase inverter is achieved by means of reversing electric field with two metallic via holes connecting the microstrip and ground plane. The graphic method is used to estimate the operation frequency. For verification, a frequency-tunable phase inverter is fabricated and measured. The measured results show a wide tuning frequency range from 1.1 GHz to 1.75 GHz with better than 20-dB return loss. The measured results are in good agreement with the simulated ones.

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Section: Introductionmentioning

confidence: 99%

Frequency-Tunable Phase Inverter Based on Slot-Line Resonator

Liao¹,

Zhang²

2017

PIER Letters

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“…Recently, several new advanced designs for dual-band or multi-band application are reported not only for power divider, such as the microwave C-section to design a miniaturized dual-band rat-race coupler [1], stepped-impedance-stub branches for both dual-band operation and compactness used in different kind of hybrid coupler [8], etc. Meanwhile, there are a lot of researches about changing conventional Wilkinson power divider form to achieve dual-band applications, for example, coupled lines are employed effectively at the input [9] or output [6] of the divider, a new two-section structure [2] is proposed to solve the drawback of poor output return loss and port isolation [10] of the former structure [11], T-type transmission line dual-band technology is also introduced by using open stub [12] and short stub [3], even applied in a unequal dual-band divider design [13], and tunable operating frequency is achieved by using varactor capacitor [14], etc. Compactness is an important aspect every designer must consider as well, in previous works, two reduced-size shaped configurations [4] based on [11] are presented, and slow-wave structure is used to reduce the size [7].…”

Section: Introductionmentioning

confidence: 99%

Compact dual-band Wilkinson power divider using lumped component resonators and open-circuited stubs

Wang

Jang

Park

2011

WAMICON 2011 Conference Proceedings

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In this paper, we employ a simple Pi-shaped microstrip line structure using lumped component resonators to design a dual-band Wilkinson power divider. This structure is based on the prototype of the conventional Wilkinson power divider working at higher frequency f 1 . In order to obtain good performance at lower frequency f 2 as well, we added opencircuited stubs connected with resonators on the initial circuit. Further, one of the open-circuited stubs can be shared with adjacent Pi-shaped circuit and all of the stubs are putted inside of the divider, compactness is kept efficiently. The Simulation results by employing 2.5D EM simulator are in good agreement with measured results.

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