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MaxLinear, WNC offer digital satellite channel stacking LNB

Posted: 16 Sep 2015     Print Version  Bookmark and Share

Keywords:MaxLinear  WNC  Sky Italia  LNB  broadband 

MaxLinear Inc., a provider of integrated RF and mixed-signal ICs for broadband communications applications, and Wistron NeWeb Corp. (WNC), a designer and manufacturer of advanced wireless communication products, have revealed that Sky Italia will begin deployment of a digital channel stacking low noise block (LNB) downconverter based on the MxL803 Ku-band satellite down-conversion RF IC and MxL862 channel-stacking SoC.

MaxLinear, WNC and Sky Italia have been collaborating on the joint development of this LNB over the last couple of years. Sky Italia's stamp of approval and launch of this LNB highlights a key milestone for the companies and opens the door for a market-wide adoption of digital channel stacking technology by other operators.

The LNB leverages MaxLinear's turnkey protocol software, which gives Sky Italia the ability to dynamically allocate channels using the EN50494 and EN50607 standard DiSEqC control protocols. As Sky Italia upgrades or expands its transponder capacity, the LNB can be easily reconfigured to accommodate additional channel line-ups.

The concurrent operation of multiple DiSEqC protocols provides complete flexibility to Sky Italia for seamlessly deploying advanced multi-channel set-top boxes and media servers while ensuring coexistence with legacy receivers connected to the same coax cable.

The MxL803 RF IC is the industry's first monolithic Ku-band downconverter implemented in digital CMOS. The single-chip solution helps eliminate dozens of discrete components, including the image reject filter, thus improving system reliability and eliminating the need for performance tuning in production.

The digital phase-lock loop (PLL)-based implementation allows operators to achieve channel drift performance of ±0.5MHz, compared to ±2MHz for a traditional dielectric resonator oscillator (DRO)-based implementation, resulting in higher usable bandwidth per channel without incurring additional costs.

The MxL862 is a digital channel-stacking SoC optimised for single-feed satellite platforms. Based on MaxLinear's ultra-low power Full-Spectrum Capture technology, the MxL862 integrates a bank of programmable channel select filters enabling a stacked output of more than 32 channels. The device can also be configured in universal L-band switch mode for backward compatibility with legacy STBs and with dish alignment measurement equipment typically used by installers.

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