A Monolithically Bst-Integrated K-{A} -Band Beamsteerable Reflectarray Antenna

Keywords

Beamsteering; ferroelectric films; microstrip antennas; reflectarray antenna; sputtering; tunable circuits and devices

Abstract

A 5\times 9 beamsteering reflectarray operating at K-{a} -band is presented in this paper. Continuous beamsteering is achieved through the use of barium strontium titanate (BST) technology. BST is monolithically integrated into each unit cell using clean room fabrication techniques. With the application of dc bias voltage, an integrated tunable capacitor is realized. The unit cell design utilized in this reflectarray is analyzed and multiple biasing schemes are assessed. The reflectarray is designed to scan in the E -plane only, and is evaluated using full-wave simulations and measurements. An appropriate feeding structure is designed and fabricated using a fused filament deposition 3-D printer, with micrometer stages used to make fine adjustments for final alignment. Overall a gain of 8.3 dBi, with a 1-dB bandwidth of 2% and continuous beamscanning from 0° to 25° at 32 GHz is demonstrated.

Publication Date

1-1-2017

Publication Title

IEEE Transactions on Antennas and Propagation

Volume

65

Issue

1

Number of Pages

159-166

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1109/TAP.2016.2627007

Socpus ID

85009089774 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85009089774

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