W-band simultaneous vector signal generation and radar detection based on photonic frequency quadrupling

Area of Science:

• Electrical Engineering
• Wireless Communications
• Radar Systems

Background:

• Vector signal generation and radar detection are crucial in modern wireless systems.
• Integrating these functions offers potential for enhanced system efficiency and capability.
• The W band presents opportunities for high-bandwidth communication and high-resolution radar.

Purpose of the Study:

• To propose and experimentally demonstrate a dual-functional system for simultaneous vector signal generation and radar detection.
• To achieve this functionality in the W band using frequency quadrupling.
• To validate the system's performance in terms of data transmission quality and radar resolution.

Main Methods:

• Development of a dual-functional system based on frequency quadrupling.
• Generation and wireless transmission of a W-band quadrature-phase-shift-keying (QPSK) vector signal.
• Implementation and testing of a W-band radar system for detection.

Main Results:

• Successful simultaneous vector signal generation and radar detection in the W band.
• Wireless transmission of a W-band QPSK vector signal over 1 m with a bit-error rate (BER) below 3.8 × 10^-3.
• Achieved a radar range resolution of 0.94 cm.

Conclusions:

• This work presents the first demonstration of simultaneous QPSK vector signal generation and radar detection in the W band.
• The proposed dual-functional system shows promising performance for integrated wireless communication and sensing applications.
• The frequency quadrupling approach enables efficient integration of these two functionalities.