Monolithic, low-noise, synchronous direct detection receiver for

Communications: directive radio wave systems and devices (e.g. – Directive – Including a radiometer

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342362, 342385, 342436, G01S 302

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active

058151133

ABSTRACT:
A direct detection receiver for a passive microwave and millimeter wave radiometric imaging system. The receiver includes a balanced switch low-noise amplifier (BSLNA). A front-end, low-noise amplifier (LNA) is inserted before the BSLNA to achieve a low-noise figure, as well as provide sufficient gain to minimize the input noise figure degradation due to loss of the BSLNA. A high-electron mobility transistor (HEMT) diode is used as a power detector. The front-end amplifier, BSLNA and diode are process compatible for monolithic integration.

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