| IP개요 |
This paper presents a dual-band transceiver architecture for a joint radar and communication system (JRACS) operating in the upper-mid frequency band, aimed at supporting simultaneous radar sensing and wireless data transmission. To overcome the limitations of conventional time-division-based JRACS architectures, the proposed transceiver adopts distinct frequency bands for radar and communication, enabling full-duplex operation. The transceiver integrates a dual-mode, dual-band power amplifier (PA), a low-noise amplifier (LNA), and an active bi-directional phase shifter (ABPS), all optimized for concurrent use in 14 GHz and 24 GHz bands. The PA utilizes a shared input structure with separate output matching networks, while the LNA implements a reconfigurable common-gate stage to enable band-specific gain optimization. The ABPS achieves low phase and gain errors using a transformer-based hybrid coupler and switchable inductors. The circuit implementation is verified through full electromagnetic (EM) simulation and parasitic extraction. The proposed architecture improves system integration, reduces circuit area, and supports dual-functionality without the need for active mode switching, making it well suited for future 6G upper-mid band applications. |
