Design of a low sidelobe x-band microstrip array with 30° sector pattern

Heinstadt, J.; Thiel, Michael

doi:10.1049/cp:19970205

Cited by 1 publication

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“…digital beamforming based on digital to analogue converter/analogue to digital converter) are not considered. Numerous examples of phased antenna arrays for Xband with scanning in a given sector have been presented in the literature [17,18], however, one of the main drawbacks in this type of antennas is related to the quality and cost of steering part, including phase shifters. For that reason another method of beam control has been proposed.…”

Section: Introductionmentioning

confidence: 99%

X‐band antenna array for low‐cost beam scanning

Yashchyshyn

Godziszewski

Bogdan

et al. 2017

IET Microwaves, Antennas & Propagation

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A concept of a low‐cost beamforming system is investigated by developing an inexpensive microstrip antenna array and proposing an appropriate approach for a beamforming. The antenna structure is composed of individually fabricated linear sub‐arrays suspended over the ground plane. The design is scalable, because an antenna array with required radiation pattern can be designed by using adequate number of linear sub‐arrays. A novel cone‐shaped transition surrounding the probe feed has been applied to decrease an inductive reactance of the input impedance. The antenna array composed of four linear sub‐arrays has been designed, fabricated and measured to validate performance of the proposed low‐cost design. The measured gain of a fabricated antenna is >26 dBi and the reflection coefficient is better than −10 dB. Each sub‐array has a separate coaxial connector, therefore beam scanning can be achieved by controlling radio frequency signals in each sub‐array. Two methods of beam scanning, a phased array approach and a time modulation approach, have been proposed and compared in terms of efficiency, cost and functionality.

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Section: Introductionmentioning

confidence: 99%