Design of Resistor-Loaded Reflectarray Elements for Both Amplitude and Phase Control
- 15 November 2016
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Antennas and Wireless Propagation Letters
- Vol. 16, 1159-1162
- https://doi.org/10.1109/lawp.2016.2626318
Abstract
Conventional reflectarray elements have only phase-control property, and this letter presents novel reflectarray elements with both amplitude and phase control using proper resistor loading. Two amplitude-controllable reflectarray elements are presented with different phase tuning techniques. It is shown that the reflection amplitude for each element only depends on the resistor value, while the reflection phase only depends on the element size or the element rotation angle. Thus, the reflection amplitude and phase can be controlled separately, and a full 360° phase range is achieved with a dynamic amplitude control over 10 dB. Both elements are fabricated and measured using a customized waveguide. The measured results agree well with the simulations, which verify the effectiveness of the proposed designs.Keywords
Funding Information
- Tsinghua National Laboratory for Information Science and Technology
- National Natural Science Foundation of China (61271100, 61471389, 61671464, 61501494)
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