Citation
Abstract
The rapid advances recently achieved by cryogenically cooled high electron mobility transistor (HEMT) low-noise amplifiers (LNAs) in the 1- to 10-GHz range are making them extremely competitive with maser amplifiers. In order to address future spacecraft navigation, telemetry, radar, and radio science needs, the Deep Space Network is investigating both maser and HEMT amplifiers for its Ka-band (32-GHz) downlink capability. This article describes the current state of cryogenic HEMT LNA development at Ka-band for the DSN. Noise performance results at S-band (2.3 GHz) and X-band (8.5 GHz) for HEMTs and masers are included for completeness.
Details
- Volume
- 42-115
- Published
- November 15, 1993
- Pages
- 1–16
- File Size
- 986.7 KB