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Wideband signal transceiver module with a Doppler shift function.

Hao Zeng1, Peng Ye1, Lianping Guo1

  • 1School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China.

The Review of Scientific Instruments
|January 3, 2019
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Summary
This summary is machine-generated.

This study presents a miniaturized wideband signal transceiver module for radar target simulation and Doppler shift measurement. The novel design achieves full band coverage and accurate Doppler shift generation within a compact form factor.

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Area of Science:

  • Electrical Engineering
  • Radar Systems Engineering
  • Signal Processing

Background:

  • Wideband signal transceiver modules are crucial for radar target simulators and Doppler shift measurements.
  • Existing modules often face limitations in size, bandwidth, and frequency range.

Purpose of the Study:

  • To design and present a miniaturized wideband signal transceiver module.
  • To achieve a wide operating frequency range and instantaneous measurement bandwidth.
  • To implement an accurate Doppler shift function within size constraints.

Main Methods:

  • Utilized a PXIe bus architecture for a 3U board with three slots.
  • Employed a zero intermediate frequency transceiver with a core hardware architecture of ADCs, FPGA, and DACs.
  • Integrated variable-frequency local oscillator synthesis, RF broadband signal conditioning, and high-speed baseband signal acquisition/generation.
  • Developed a novel Doppler shift technology combining complex and real signals for full band coverage.

Main Results:

  • Achieved an operating frequency range of 65 MHz-3 GHz and an instantaneous measurement bandwidth of 800 MHz.
  • Successfully generated Doppler shifts from -400 Hz to 400 Hz with 2 Hz steps.
  • Demonstrated a Doppler shift error of ±2 Hz.

Conclusions:

  • The designed miniaturized wideband signal transceiver module meets the requirements for radar applications.
  • The novel Doppler shift technology effectively covers the full band within a compact design.
  • The module offers a viable solution for precise Doppler shift measurement and simulation.