This transceiver demonstrates 73 dB receive gain in a millimetre-wave system, suggesting improved system isolation up to 63 dB.
This letter presents a 128‐element millimetre‐wave integrated sensing and communication (ISAC) system. The proposed system integrates the radio frequency (RF) front‐end, RF‐to‐intermediate frequency (IF) converters, IF, and local oscillator (LO) modules into a compact chassis. Multi‐stage gain enables a total transmit gain of up to 62 dB and a receive gain of up to 73 dB. A reconfigurable chassis design allows the spacing between the transmit and receive arrays to be flexibly adjusted up to 16 cm, effectively enhancing isolation to 63 dB. When the transmit and receive arrays are co‐located, the system supports a wide beam scanning range of ±60° in the azimuth plane and ±50° in the elevation plane and achieves a typical effective isotropic radiated power (EIRP) of 66 dBm at the P1 dB point. Experimental results validate reliable transmission of a 450 MHz 64‐QAM signal with an error vector magnitude (EVM) of 4.98%, a maximum sensing range of approximately 350 m, and a range resolution of 34 cm.
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Qian et al. (2025) studied this question.
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