Low Noise Block Downconverters (LNB)

Receiving device mounted on satellite dishes used for satellite TV reception, which collects the radio waves from the dish. The LNB is a combination of low-noise amplifier, frequency mixer, local oscillator and IF amplifier. It receives the microwave signal from the satellite collected by the dish, amplifies it, and downconverts the block of frequencies to a lower block of intermediate frequencies (IF). This downconversion allows the signal to be carried to the indoor satellite TV receiver using relatively cheap coaxial cable.