期刊
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
卷 70, 期 9, 页码 7491-7500出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TAP.2022.3176857
关键词
Propagation losses; Reflection coefficient; Surface impedance; Surface waves; Substrates; Reflection; Strips; Beam scanning; dual-layer Huygens element; p-i-n diode; reconfigurable transmitarray
资金
- Australia Research Council Discovery Program [DP220101158]
This article presents the development of a Ku-band electronic 2-D beam-scanning transmitarray using a new reconfigurable dual-layer Huygens element. The proposed element, consisting of two metallic crosses printed on two layers of a dielectric substrate, enables a near nonreflection Huygens resonance. A 1 bit phase compensation with low transmission loss is achieved by controlling two p-i-n diodes on the element. Compared to other reconfigurable transmitarray elements, the proposed Huygens element has a simpler configuration and biasing network, and is not affected by multilayer alignment errors.
A Ku-band electronic 2-dimensional (2-D) beam-scanning transmitarray employing a new reconfigurable dual-layer Huygens element is developed in this article. The Huygens element consists of two metallic crosses printed on two layers of a dielectric substrate, which enables a near nonreflection Huygens resonance. A 1 bit phase compensation with low transmission loss is realized by controlling two p-i-n diodes on the element. Compared with many other reconfigurable transmitarray elements using multilayer structures with metallic vias, the proposed reconfigurable Huygens element has a much simpler configuration with a simpler biasing network, and it is not affected by multilayer alignment errors. This particularly facilitates large aperture array development at higher frequencies. To validate the design concept, an electronically reconfigurable transmitarray with the proposed element is fabricated at 13 GHz. Good agreement between the measured and simulated results is found, showing 2-D scanning beams within +/- 50 degrees in the E-plane and +/- 40 degrees in the H-plane with a maximum realized gain of 18.4 dBi.
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