研究目的
Investigating the design and implementation of a fully-integrated S-band high-gain MMIC low noise amplifier (LNA) with differential input and single-ended output for Square Kilometre Array (SKA) astronomical receiver.
研究成果
The proposed S-band high-gain fully-integrated MMIC DLNA demonstrates high performance with 31.8-dB gain and average in-band noise figure of 0.73 dB, suitable for next-generation highly-integrated radio astronomical receiver front-end.
研究不足
The use of GaAs pHEMT technology may limit the integration level compared to CMOS technology. The noise figure measurement method requires a passive broadband balun with high return loss.
1：Experimental Design and Method Selection:
The LNA is designed with a low-loss input noise matching network and a fully on-chip LC balun to improve system noise figure.
2：Sample Selection and Data Sources:
The LNA is implemented in WIN’s
3：15-μm GaAs pHEMT technology. List of Experimental Equipment and Materials:
Keysight Microwave Network Analyzer PNA-X N5245A is used for measurement.
4：Experimental Procedures and Operational Workflow:
The chip is measured through on-wafer probing with
5：0-V supply voltage. Data Analysis Methods:
The noise figure and S-parameters are measured and analyzed to evaluate the LNA performance.
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