Abstract
A beam-steerable 2 bit reflectarray antenna with an electromagnetic control mechanism is presented in this communication. The phase reflection of the proposed 2 bit reflectarray unit elements is altered by moving two pins between a patch and the ground plane. In the suggested concept, the pins are moved with electromagnetism. To prove the concept, a prototype with manually turned screws is evaluated through measurements to verify the reflectarray performance. The prototype antenna is measured to have an impedance bandwidth of more than 5 GHz. The boresight realized gain is measured to be 20 dBi at 25 GHz and a gain bandwidth is more than 2 GHz. Measurements show that the prototype antenna is able to beam-steer in a 120° range with a gain drop of less than 3 dB.
Original language | English |
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Journal | I E E E Transactions on Antennas and Propagation |
Volume | 71 |
Issue number | 5 |
Pages (from-to) | 4570-4575 |
Number of pages | 6 |
ISSN | 0018-926X |
DOIs | |
Publication status | Published - May 2023 |
Keywords
- Antenna
- K-band
- beam-steering
- mm-wave
- reflectarray