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- Title
A Circularly Polarized Complementary Antenna with Substrate Integrated Coaxial Line Feed for X-Band Applications.
- Authors
Ji, Zhuoqiao; Sun, Guanghua; Wang, Kaixu; Wong, Hang; Yu, Zhan; Li, Zhengguo; Wei, Changning; Liu, Pei
- Abstract
This work presents a design for a complementary antenna with circular polarization that has a wide operating bandwidth, stable broadside radiation, and stable gain for X-band applications. The proposed antenna consists of an irregular loop and a parasitic electric dipole, which work together to produce equivalent radiation from the magnetic and electric dipoles. By arranging the dipole and the loop in a specific geometry, this antenna effectively generates circularly polarized wave propagation. A substrate integrated coaxial line (SICL) is applied to feed the antenna through an aperture cutting on the ground. The proposed antenna achieves a wide axial ratio (AR) and impedance bandwidths of 27.4% (from 8.5 to 11.22 GHz, for the AR ≤ 3 dB) and 39.6% (from 7.5 to 11.2 GHz, for the reflection coefficient ≤ −10 dB), respectively. Moreover, the antenna maintains a stable broadside radiation pattern across the operating bandwidth, with an average gain of 10 dBic. This proposed antenna design is competitive for X-band wireless communications.
- Subjects
COAXIAL cables; ANTENNAS (Electronics); ANTENNA feeds; ANTENNA design; CIRCULAR polarization; WIRELESS communications; APERTURE antennas
- Publication
Electronics (2079-9292), 2024, Vol 13, Issue 4, p785
- ISSN
2079-9292
- Publication type
Article
- DOI
10.3390/electronics13040785