Low-noise block-down receiver for satellite television broadcasting has signal processing circuit in plastics housing with integrated horn and hollow wave-guide

摘要

The low-noise block-down receiver (1) has a signal processing circuit (40) contained in a plastics housing (10') with an integrated horn (11') and hollow wave-guide (12'). The inside surfaces of the housing are coated with a metal film (31) of an electrically conductive alloy, for transmission of microwaves and preventing signal leakage and external noise interference.