We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Novel planar reconfigurable circularly polarized complementary antenna for unidirectional end‐fire radiation.
- Authors
Wang, Lei; Jiao, Yong‐Chang; Weng, Zibin
- Abstract
In this article, a novel planar reconfigurable circular polarization (CP) complementary antenna for unidirectional end‐fire radiation is proposed. Its radiator is the combination of a shorted quarter wavelength patch and an electric dipole, which provide the vertical and horizontal polarizations, respectively. By adding a 90° phase delay line, the proposed antenna radiates CP electromagnetic waves in the unidirectional end‐fire direction. Four p‐i‐n diodes are also inserted at joints of the electric dipole and the phase delay lines, and two orthogonal CP states, left‐hand (LH) and right‐hand (RH) CPs, can be switched. In order to reduce the number of DC bias lines, electric dipole arms on both sides of the substrate are connected by metal via‐holes, which simplifies the DC bias lines. The proposed antenna at 2.45 GHz is designed and fabricated. Its measured impedance bandwidth with |S11| < −10 dB and 3‐dB axial ratio bandwidth are 2.1% and 10.7%, respectively. Additionally, its maximum half power beamwidth in xoz plane is 196°. Reasonable agreement between the measured and simulated results validates the polarization reconfigurability of the proposed antenna.
- Subjects
ANTENNAS (Electronics); PIN diodes; CIRCULAR polarization; PLANAR antennas; DELAY lines; ELECTROMAGNETIC waves
- Publication
International Journal of RF & Microwave Computer-Aided Engineering, 2020, Vol 30, Issue 7, p1
- ISSN
1096-4290
- Publication type
Article
- DOI
10.1002/mmce.22211