Ultra-Wideband High-Gain Transmitarray Antenna : For practical applications of transmitarray antennas

Xiao, Lin; Qu, Shi‐Wei; Tang, Wei; Feng, Peng; Lu, Senlin

doi:10.1109/apmc47863.2020.9331403

Cited by 2 publications

(1 citation statement)

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“…Vivaldi array is well known for simple feed structure and wideband impedance bandwidth, which has become practical choices in many systems such as finite array measurement, 18 radio astronomy, 19 and radar systems 20 . The measured results of the full‐size TA have been summarized in Reference [21]. Here, a detailed design of the dual‐polarized Vivaldi TA element is presented, where a high‐impedance microstrip phase delay polyline is developed to reduce the transmission losses.…”

Section: Introductionmentioning

confidence: 99%

Ultra‐wideband dual‐polarized transmitarray antenna with Vivaldi elements

Xiao

Yang

2021

Int J RF Mic Comp-Aid Eng

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The implementation of an ultra-wideband (UWB) dual-polarized transmitarray antenna (TA) is presented in this paper. The proposed TA takes advantages of the UWB performance of Vivaldi array and the true-time-delay (TTD) characteristic of transmission line to overcome the inherent bandwidth limitations.First, a dual-polarized TA element featuring low transmission losses, high polarization purity, and linear TTD phase responses over 5-16 GHz is designed, where an improved high-impedance microstrip phase delay polyline is developed to enhance the transmitting efficiency. Then, in-band resonances caused by wire grid ground in the construction of dual-polarized TA aperture are carefully addressed. As a proof of concept, a prototype including 22 Â 23 elements arranged in an egg-crate configuration is manufactured and measured. The experimental results show that the TA achieves stable radiation performance within the operating band.

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