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MaxLinear Digital Channel Stacking Satellite SoC Deployed In GT-SAT’s New “DLNB”

MaxLinear Inc. (NYSE:MXL), a leading provider of integrated radio frequency (RF) and mixed-signal integrated circuits for broadband communications applications, today announced that GT-SAT International of Luxembourg has deployed MaxLinear’s Full-Spectrum Capture™ (FSC™) MxL862 in a new digital satellite low-noise block (DLNB) downconverter.

Satellite operators in Europe and Latin America are moving to DLNBs so that they can provide multi-channel distribution to the home via a single-cable connection from the LNB to the set-top box. GT-SAT chose the MxL862 channel stacking system on chip (SoC) because it offers significantly lower power draw and an unprecedented level of integration, which simplified GT-SAT’s DLNB design.

The DLNB is based on GT-SAT’s own dHello advanced channel stacking switch protocol. dHello uses DiSEqC protocol commands and is backward compatible to any device supporting a minimum of DiSEqC 1.x. It is comprised of four commands that provide the control mechanisms for all channel-stacking functions. The protocol supports both satellite and terrestrial frequency ranges and supports C-, Ku- and Ka-band satellites and both linear as well as circular polarization. The converted frequency is sent in a format that supports a wide range of LNBs, including wide-band and universal architectures, as well as multiswitches.

The MxL862 is designed to exceed strict RF performance from leading direct broadcast satellite operators. Having this additional performance helped GT-SAT significantly reduce the design complexity and enter the market quickly.

MaxLinear’s MxL862 configurability was also important in the DLNB design process. The channel stacking engine is fully configurable through an application programming interface (API). It can be configured to support legacy static line up of 30 channels or more, while enabling seamless migration to dynamic channel stacking as operators deploy more advanced services.

“DLNBs are essential to a satellite operator’s multi-channel strategy. With its Full-Spectrum Capture technology and integrated functionality, the MxL862 will give GT-SAT a great time-to-market advantage,” said Brian Sprague, MaxLinear Vice President and General Manager. “GT-SAT is breaking new ground with its digital channel stacking LNB product and it has been exciting to work with them to bring this product to market.”

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