研究目的
To present the upgrade of the input signal generation of the W-band gyro-TWA and the experiment results with frequency-swept input signals.
研究成果
A proof-of-principle experiment in the W-band gyro-TWA with a frequency swept input signal has been carried out, achieving a gain over 30 dB over the frequency band of 93.5 – 94.5 GHz. Future improvements include sourcing a wider bandwidth solid-state source and a more stable high-voltage power supply.
研究不足
The nonlinear effect from the six-time frequency multipliers in the solid-state source made it difficult to achieve a desired signal beyond the bandwidth of 1 GHz. The noise caused by the opening and closing of the switching was relatively large and could be coupled into the low-power mm-wave devices.
1：Experimental Design and Method Selection:
The experiment involved upgrading the input signal generation of a W-band gyro-TWA to test its performance with frequency-swept input signals.
2：Sample Selection and Data Sources:
The experiment used a W-band gyro-TWA driven by a 40kV,
3：5 A electron beam. List of Experimental Equipment and Materials:
Key components included a cusp electron gun, pillbox window, input coupler, elliptical polarizer, input and output windows, HCIR, and solenoid systems.
4：Experimental Procedures and Operational Workflow:
The setup for generating the input mm-wave signal involved an arbitrary waveform generator, a vector signal generator, a solid-state amplifier, an attenuator, a waveguide harmonic mixer, an oscilloscope, and a signal analyzer.
5：Data Analysis Methods:
The performance was analyzed based on the gain achieved and the bandwidth of the input signal.
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