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Microwave Transceiver Front End of Altitude Simulator

Altimeter Transceiver Assembly

The microwave transceiver module for altimeters is a core matching microwave module of radio altimeters, and it is divided into a transmitting unit, a receiving unit, a modulation unit, and other components.
The transmitting unit mainly fulfills functions such as generating a sawtooth linear frequency-modulated (LFM) microwave frequency source, performing power amplification, and achieving coupling and isolation of the signal. Eventually, it outputs the processed signal to the transmitting antenna.
The receiving unit, on the other hand, primarily completes filtering and amplification of the received reflected signal. It then conducts correlation mixing between this amplified reflected signal and the transmitted signal, and outputs the beat signal (denoted as FB) after the mixing process.
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Description

Main Outcome Measures

  • FM center frequency: 4300mhz ± 10MHz;
  • FM linear bandwidth: 150MHz;
  • Frequency modulation linearity: ε ≤ 10%;
  • Total receiving gain: 23 ± 3dB;
  • Transceiver isolation: ≥ 80dB;
  • Working temperature: – 45 ℃ ~ 60 ℃;
  • Component reliability requirements: MTBF ≥ 10000h.

Altimeter Transceiver Assembly

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