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An X-band Bi-Directional Transmit/Receive Module for a Phased Array System in 65-nm CMOS
Van-Viet Nguyen1, Hyohyun Nam2, Young Joe Choe3
1Division of Electronics and Electrical Engineering, Dongguk University, Seoul 04620, Korea. vietbk10@dongguk.edu.
Sensors (Basel, Switzerland)
|August 8, 2018
Summary
We developed an X-band bi-directional transmit/receive module (TRM) for radar sensors. This compact, low-power CMOS module offers precise amplitude and phase control, crucial for advanced phased array systems.
Area of Science:
- Electrical Engineering
- Microwave Engineering
- Radar Systems
Background:
- Phased array systems are critical for modern radar applications.
- Efficient transmit/receive modules (TRMs) are essential components for beamforming and signal control.
Purpose of the Study:
- To design and fabricate a novel X-band bi-directional TRM for radar-based sensor systems.
- To achieve precise amplitude and phase control using CMOS technology.
Main Methods:
- Fabrication of a 65-nm CMOS bi-directional TRM.
- Integration of a 6-bit phase shifter, 6-bit digital step attenuator, and bi-directional gain amplifiers.
- Construction of passive networks for amplitude and phase control.
Main Results:
- Achieved 360° phase coverage with a 5.625° minimum step size.
- Provided an attenuation range of 0-31.5 dB with a 0.5 dB step size.
- Demonstrated RMS phase errors < 4° and RMS amplitude errors < 0.93 dB (9-11 GHz).
- Reported an output 1dB gain compression point (OP1dB) of 5.13 dBm at 10 GHz.
- Achieved a compact chip area (3.92 × 2.44 mm²) and low DC power consumption (170 mW).
Conclusions:
- The developed X-band bi-directional TRM meets the stringent requirements for phased array radar systems.
- The 65-nm CMOS technology enables a compact, low-power, and high-performance solution.
- This TRM is suitable for next-generation radar-based sensor applications.
Keywords:
T/R moduleattenuatorbi-directional gain amplifierphase shifterphased array antennaradar-based sensorsMore Related Videos
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