Reconfigurable Dual-mode Integrated Beam-steering Array

Chu, Huy Nam; Heish, Ting; Ma, Tzyh‐Ghuang

doi:10.1109/mwsym.2018.8439832

Cited by 1 publication

(2 citation statements)

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“…The absorptive SPDT is responsible for selecting one input of the reconfigurable coupler as the excitation while terminating the other one to avoid reflections. As available commercial SPDTs cannot provide adequate absorption as requested, the switchable synthesized line in [33], inherently serving as an on/off RF switch, is extended to fulfill the design. The layout of the absorptive SPDT is shown in the left of Fig.…”

Section: Absorptive Spdt Switchmentioning

confidence: 99%

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A Phase Distribution Network Using 2 × 4 Butler Matrix for Linear/Planar Beam-Scanning Arrays

Chu

2021

IEEE Access

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A new 1  4 phase distribution network (PDN) featuring a fully controllable progressive phase shift between outputs is proposed for continuous beam-scanning arrays. The PDN is made up of two parts: a modified 2  4 Butler matrix integrated with four phase shifters (PSs), and a tunable power divider (TPD) whose power division ratio can be controlled over a wide tuning range. The synthesis equations show that the relative phase shift between PDN outputs can be fully controlled by the TPD and embedded PSs without using an external single-pole quad-throw (SP4T) switch. The proposed PDN is demonstrated at 2.4 GHz as the feed network of a 4-element linear array. The experimental results display a fully controllable progressive phase shift (from −180° to 180°) between PDN outputs over a 20% bandwidth with good performance of matching, power division, and relative phase shifts. A spatial coverage of 116° with the feature of continuous beam scanning and negligible dc power consumption is achieved. Benefitting from the single-input topology, a planar 16-element phased array for 2D beam scanning is then realized by simply stacking and cascading five instead of eight PDN modules. It removes the high-cost and bulky SP16T switch. Experimental results demonstrate the uniqueness of the proposed designs.INDEX TERMS Antenna arrays, beam-steering, Butler matrix, phase shifters, tunable circuit and devices.

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Section: Absorptive Spdt Switchmentioning

confidence: 99%

“…The inductor L s in switch B guarantees good matching in the on-state such that only one universal bias voltage is needed for both switches. The design procedure of switches A and B has been detailed in [33].…”

Section: (A) It Consists Of Two Pairs Of Switches a And B And A 50- Resistor Inserted Between The Pair Of Switches B To Bridge The Outpumentioning

confidence: 99%

A Phase Distribution Network Using 2 × 4 Butler Matrix for Linear/Planar Beam-Scanning Arrays

Chu

2021

IEEE Access

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Reconfigurable Dual-mode Integrated Beam-steering Array

Cited by 1 publication

References 5 publications

A Phase Distribution Network Using 2 × 4 Butler Matrix for Linear/Planar Beam-Scanning Arrays

A Phase Distribution Network Using 2 × 4 Butler Matrix for Linear/Planar Beam-Scanning Arrays

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