Abstract
Two wide-angle scanning linear array antennas (E-and H-planes scanning linear array antenna) are studied and presented. In order to improve the wide-angle scanning performance of the phased array antenna, a wide beamwidth U-shaped microstrip antenna with the electric walls is designed. The wide-angle scanning linear array antennas are studied in the frequency band from 3.2 to 3.8 GHz. The 3 dB beamwidth of the antenna is 140° in the E-plane scanning linear array center and 220° in the H-plane scanning linear array center at 3.5 GHz. The main beams of the H-plane scanning linear array antenna can scan from-90° to +90° with a gain fluctuation less than 3 dB and a maximum sidelobe level (SLL) less than-5 dB. Simultaneously, the main beam of the E-plane scanning linear array antenna can scan from-75° to +75° with a gain fluctuation less than 3 dB and SLL less than-5 dB. The H-and E-planes scanning linear array antennas with nine elements are fabricated and tested. The measured results have a good agreement with the simulation results.
| Original language | English |
|---|---|
| Article number | 8064739 |
| Pages (from-to) | 450-455 |
| Number of pages | 6 |
| Journal | IEEE Transactions on Antennas and Propagation |
| Volume | 66 |
| Issue number | 1 |
| DOIs | |
| State | Published - Jan 2018 |
Keywords
- Microstrip antennas
- phased array antennas
- scanning antennas
- wide-angle scanning
- widebeam