Details

Autor(en) / Beteiligte

• Imai, K.
• Nakakita, H.

Titel

A 22-GHz-band low-noise down-converter for satellite broadcast receivers

Ist Teil von

• IEEE transactions on microwave theory and techniques, 1991-06, Vol.39 (6), p.993-999

Ort / Verlag

New York, NY: IEEE

Erscheinungsjahr

1991

Quelle

IEEE Xplore

Beschreibungen/Notizen

• A simple low-cost and high-performance 22 GHz band down-converter developed for a direct-to-home satellite broadcasting system is discussed. The down-converter consists of a low-noise high electron mobility transistor (HEMT) preamplifier, an image recovery mixer with a particular structure using dielectric resonator filters, a 21.4 GHz GaAs FET oscillator stabilized by a dielectric resonator, and an IF amplifier. These components are fully integrating using microwave integrated circuit technology into a small size. A total noise figure of less than 2.8 dB is obtained over the 22.5-23.0 GHz frequency range. The local oscillator achieves a frequency variation of less than 600 kHz/sub p-p/ over a temperature range of -20 degrees to +60 degrees C.< >