A GaN HF-band Power Amplifier using Class-D Topology for Jupiter Ice Penetrating Radar

We present the design and measured results of a class-D GaN HF-band power amplifier for use in an ice penetrating radar bound for Jupiter's icy moons of Ganymede, Callisto and Europa. The design uses a novel digital driver square-wave generator to achieve high-efficiency. The power amplifier ge...

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Bibliographic Details
Published in:	2022 IEEE/MTT-S International Microwave Symposium - IMS 2022 pp. 214 - 217
Main Authors:	Shenoy, Tushar, Johnson, Robert, Tanabe, Jordan, Beauchamp, Robert, Yam, Ly, Gim, Yonggyu, Heyer, Donald, Plaut, Jeffery
Format:	Conference Proceeding
Language:	English
Published:	IEEE 19-06-2022
Subjects:	High power amplifiers Ice Jupiter Moon Power amplifiers Pulse amplifiers Radar imaging Radar remote sensing Space technology Spaceborne radar Time-frequency analysis
Online Access:	Get full text
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Summary:	We present the design and measured results of a class-D GaN HF-band power amplifier for use in an ice penetrating radar bound for Jupiter's icy moons of Ganymede, Callisto and Europa. The design uses a novel digital driver square-wave generator to achieve high-efficiency. The power amplifier generates >46.7 dBm of RF output power at >82 % drain efficiency. The frequency and time domain variation of a 3 MHz bandwidth pulsed chirp signal was <0.5 dB. In addition, the amplifier was designed to meet the harsh Jovian environment with a 10 year plus mission life.
ISSN:	2576-7216
DOI:	10.1109/IMS37962.2022.9865331