Double-Differential-Fed, Dual-Polarized Patch Antenna With 90 dB Interport RF Isolation for a 2.4 GHz In-Band Full-Duplex Transceiver

Single Layer, Dual Polarized, 2.4 GHZ Patch Antenna With Very High Rf Isolation Between Dc Isolated Tx-Rx Ports for Full Duplex Radio

“…Moreover, the effective SIC will not be performed at Port 3 as two components of Tx power will be added at Port 3. The analytical details and analysis of differential feeding based SIC (without radiation performance degradation) are presented in [15].…”

A Dual-Polarized Linear Antenna Array With Improved Isolation Using a Slotline-Based 180° Hybrid for Full-Duplex Applications

“…o realize a full-duplex system where the spectrum efficiency can be doubled compared to those using half-duplex operations, an essential work is the suppression of the self-interference caused by the leakage from the transmitter to the local receiver [1]- [9]. As mentioned in [7]- [9], the isolation achieved at the antenna level should be as high as possible to ease the burdens of the subsequent analog or digital cancellations and obtain a total level of over 100-dB isolation. Seeing that certain isolation can be observed between orthogonal polarizations naturally, using dual-polarized antennas with isolation-improved techniques is valuable for the in-band full-duplex communications [4]- [9].…”

“…As mentioned in [7]- [9], the isolation achieved at the antenna level should be as high as possible to ease the burdens of the subsequent analog or digital cancellations and obtain a total level of over 100-dB isolation. Seeing that certain isolation can be observed between orthogonal polarizations naturally, using dual-polarized antennas with isolation-improved techniques is valuable for the in-band full-duplex communications [4]- [9].…”

Co‐polarized monostatic antenna with high Tx–Rx isolation for 2.4 GHz single channel full duplex applications

“…Such antenna at transceiver front end prevents the saturation of receiver from high power SI signal . Normally, such monostatic patch antenna is orthogonally polarized(dual polarized) and high interport isolation is achieved by this polarization diversity in addition to differential feeding mechanism and analog/RF self‐interference cancellation (RF‐SIC) circuits . In such antenna systems, the polarization diversity provides inherent isolation of around 40‐45 dB through uncorrelated transmit (T x ) and receive (R x ) radio signal having same carrier frequency .…”