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Highly integrated LNB downconverters promise low power and improved system performance

Fri, 09/23/2011 - 3:20am
ECN Europe

NXP’s new family of DVB-S compliant downconverters consumes just 52mA, which NXP says is around half as much as other integrated solutions, significantly increasing the lifetime of the Low Noise Block (LNB) system and improving its reliability. Introduced today, the TFF101xHN series is a family of integrated downconverters for use in LNB 10.7-GHz to 12.75-GHz Ku band satellite receiver systems.

The TFF101xHN family features a conversion gain ranging from 37 dB to 45 dB. The devices also offer integrated phase noise of 1.5 degrees RMS and a low noise figure of 7 dB. Additionally, NXP says the high level of integration guarantees the stability of the local oscillator (LO), which improves overall system reliability by eliminating LO drift over lifetime due to temperature changes.

For satellite LNB makers, assembly is also made easy due to the minimal requirement for external components. The TFF101xHN family comes in four fully RF-tested versions with pre-set LO frequencies, which significantly reduces the need for manual adjustments on the production line, speeding up the manufacturing process and time to market, as well as lowering operating costs.

The Low Noise Block downconverter is the device at the front of a parabolic satellite dish antenna that receives the very low level microwave signal from the satellite, amplifies the signal and converts it to a lower frequency band in order to send it down the cable to the indoor receiver.

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