A Low-Profile Folded Transmitarray for Single-Shot Random Transmit-Receive Sensing
- Resource Type
- Conference
- Authors
- Wu, Jinyu; Ma, Dingfei; Zhang, Qingfeng; Liu, Baiyang
- Source
- 2023 Cross Strait Radio Science and Wireless Technology Conference (CSRSWTC) Cross Strait Radio Science and Wireless Technology Conference (CSRSWTC), 2023. :1-3 Nov, 2023
- Subject
- Computing and Processing
Fields, Waves and Electromagnetics
Photonics and Electrooptics
Signal Processing and Analysis
Wireless communication
Wireless sensor networks
Three-dimensional displays
Transceivers
Real-time systems
Sensors
Feeds
Folded transmitarray
low profile
microwave sensing
- Language
- ISSN
- 2377-8512
A low-profile folded transmitarray for dual-random-field sensing is presented. The system relies on a randomly arranged folded array and a single feed source to generate random transmit-receive fields by switching the feed polarization. The folded design with a transmitarray surface (TAS) and a polarization-conversion reflective surface (PCRS) operating over a 34% bandwidth reduces the overall height while maintaining desired sensing functionality. The system has an aperture size of $\mathbf{12}\lambda\times \mathbf{12}\lambda\times \mathbf{2}\lambda$ with a low height-to-diameter ratio (H/D) of 0.16. The random transmit-receive fields generated by the system allow for more independent measurements and enhanced sensing capabilities and accuracy, which is validated by the sensing results. The proposed compact transceiver has the potential of high-resolution real-time sensing applications.