Longitudinally Miniaturized H-Plane Horn Antenna With -30 dB Sidelobes Realized by Simple Blocks Redistributing the Aperture Field
- Publisher:
- Institute of Electrical and Electronics Engineers (IEEE)
- Publication Type:
- Journal Article
- Citation:
- IEEE Transactions on Antennas and Propagation, 2022, 70, (8), pp. 7187-7192
- Issue Date:
- 2022-01-01
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| Filename | Description | Size | |||
|---|---|---|---|---|---|
| Longitudinally Miniaturized H-Plane Horn Antenna With -30 dB Sidelobes Realized by Simple Blocks Redistributing the Aperture Field.pdf | Published version | 3.7 MB |
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A longitudinally miniaturized H-plane horn antenna with suppressed sidelobes by redistributing the filed on the radiating aperture is proposed by loading a few rectangular blocks. The substantial longitudinal length reduction (around 50% of an optimal horn) will cause a non-uniform phase and non-tapering magnitude distributions of the electric fields on the horn aperture, resulting in high sidelobes and decreased gain. Four pairs of rectangular blocks perturbing the fields are loaded near the radiating aperture, realizing a field redistribution for a tapered magnitude distribution and relatively uniform phase distribution on the aperture. Thus, the sidelobes are noticeably reduced to lower than -30 dB, and 10.6 dBi average gain in the frequency band of 10.5-15 GHz is achieved. A prototype of the proposed miniaturized H-plane horn antenna is manufactured and measured, good agreements between the measured and simulated results are obtained. The proposed miniaturized H-plane horn has two advantages over other reported miniaturized horn antennas: 1) simple geometry resulting in easy fabrication and low cost, 2) -30dB ultra-low sidelobe level (SLL).
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