An Ultrawideband Dual-Polarized Tightly Coupled Dipole Array (TCDA) With Wide Scanning Range
- Publisher:
- Institute of Electrical and Electronics Engineers (IEEE)
- Publication Type:
- Journal Article
- Citation:
- IEEE Antennas and Wireless Propagation Letters, 2023, PP, (99), pp. 1-5
- Issue Date:
- 2023-01-01
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Filename | Description | Size | |||
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An Ultrawideband Dual-Polarized Tightly Coupled Dipole Array (TCDA) With Wide Scanning Range.pdf | Accepted version | 1.59 MB |
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This letter presents an ultra-wideband (UWB) dual-linearly-polarized tightly coupled dipole array (TCDA) designed for wide-angle scanning in both E and H planes. The proposed TCDA design achieves exceptional performance, boasting a bandwidth of 10.2:1 (1.3–13.3 GHz) and an active voltage standing wave ratio (VSWR) of less than 3 when scanning up to ±70° in both E and H planes. This superior performance is achieved through the incorporation of four new design elements: gradual shorting posts, resistance patches, a notched balun, and a composite double-layer superstrate. These design elements effectively suppress various resonances, improve impedance matching, and enhance beam scanning capabilities. The antenna element has dimensions of 0.43λc × 0.43λc × 0.57λc, where λc represents the free space wavelength at the center frequency of 7.3 GHz. A 12×12 element array was fabricated and tested, further validating the proposed TCDA's noteworthy features, including dual-polarization operation, ultra-wide bandwidth, and the widest scanning angle in both E- and H-planes.
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