Abstract
An integrated simultaneous transmit and receive (STAR) antenna system with high isolation and monopole-like radiation characteristics is presented. The system consists of a TX/RX planar conformal antenna aperture and a microstrip-based sequentially rotated feeding network (SRFN), resulting in a compact and highly integrated architecture. The antenna aperture features a central circular patch acting as the RX antenna, surrounded by four TX annular sector patch elements excited by the SRFN. To achieve monopole-like radiation in a low-profile configuration, metallic vias are loaded on the RX antenna, and two sets of slots are etched on each TX element. In addition, lumped inductors are inserted between the RX antenna and each TX element to suppress mutual coupling and improve antenna efficiency. Measurement results show that the STAR antenna system achieves over 43.6-dB TX/RX isolation in 2.4–2.48 GHz, while maintaining monopole-like radiation characteristics with consistent polarization and radiation patterns for both TX and RX.
| Original language | English |
|---|---|
| Pages (from-to) | 8319-8324 |
| Number of pages | 6 |
| Journal | IEEE Transactions on Antennas and Propagation |
| Volume | 73 |
| Issue number | 10 |
| Early online date | 16 Jul 2025 |
| DOIs | |
| Publication status | Published - Oct 2025 |
| Externally published | Yes |
Bibliographical note
Publisher Copyright:© 1963-2012 IEEE.
Keywords
- High isolation
- monopole-like radiation
- simultaneous transmit and receive (STAR)
- system integration