Abstract
This paper presents a design method of broad flat-top fan-beam complementary antenna. This antenna superposes a finite length dipole (FLD) and a non-small current loop (NSCL). Their amplitude ratio, phase difference, and phase center spacing can be utilized to enhance the overall beamwidth and obtain a fan beam. To realize the NSCL, two symmetric inverted-F and two connected L-shaped strips are employed to generate two small loops and one large loop, respectively. For FLD, two connected parasitic strips introduce two dipole modes for superposition. To verify the design idea, a printed 1×4 E-plane antenna array is simulated, fabricated and measured for 24-GHz applications. A measured 10-dB impedance bandwidth of 31.0% (19.2–26.2 GHz) can be obtained, with a peak measured 1-dB H-plane beamwidth of 202° at 22 GHz.
© 2026 IEEE. All rights reserved, including rights for text and data mining and training of artificial intelligence and similar technologies. Personal use is permitted, but republication/redistribution requires IEEE permission.
© 2026 IEEE. All rights reserved, including rights for text and data mining and training of artificial intelligence and similar technologies. Personal use is permitted, but republication/redistribution requires IEEE permission.
| Original language | English |
|---|---|
| Number of pages | 12 |
| Journal | IEEE Transactions on Antennas and Propagation |
| DOIs | |
| Publication status | Online published - 15 Jul 2026 |
Funding
This work was supported by the Joint Funds of the National Natural Science Foundation of China under Grant U23A20288, and Key R&D Program of Jiangxi Province, China under Grant 20261BCE310039.
Research Keywords
- Broad fan-beam
- complementary antenna
- flattop beam
- wide band
Fingerprint
Dive into the research topics of 'Design Method of Broad Flat-Top Fan-Beam Complementary Antenna for Radar Applications'. Together they form a unique fingerprint.Cite this
- APA
- Author
- BIBTEX
- Harvard
- Standard
- RIS
- Vancouver