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TA0321 Datasheet

Part Number TA0321
Manufacturers ST Microelectronics
Logo ST Microelectronics
Description TECHNICAL ARTICLE
Datasheet TA0321 DatasheetTA0321 Datasheet (PDF)

www.DataSheet4U.com TA0321 TECHNICAL ARTICLE Lightning protection for LNB supply and control voltage regulator Introduction Communication satellites operate within two frequency bands for TV/Broadband service broadcast signals, C Band and Ku Band. The C Band overall frequency spectrum is 4.0 GHz - 8.0 GHz, while the Ku Band overall frequency spectrum is 10.7 GHz - 18.4 GHz. Within these bands each satellite has a specific uplink and downlink frequency allocation. For example: ■ ■ Ku Band downl.

  TA0321   TA0321






TECHNICAL ARTICLE

www.DataSheet4U.com TA0321 TECHNICAL ARTICLE Lightning protection for LNB supply and control voltage regulator Introduction Communication satellites operate within two frequency bands for TV/Broadband service broadcast signals, C Band and Ku Band. The C Band overall frequency spectrum is 4.0 GHz - 8.0 GHz, while the Ku Band overall frequency spectrum is 10.7 GHz - 18.4 GHz. Within these bands each satellite has a specific uplink and downlink frequency allocation. For example: ■ ■ Ku Band downlink frequency is 10.7 GHz-12.75 GHz and uplink frequency is 17.3 GHz-17.8 GHz. C Band downlink frequency is 3.7 GHz-4.2 GHz and uplink frequency is 5.925 GHz-6.425 GHz To use the frequencies that are available for satellite broadcast as efficiently as possible, and to accommodate an additional number of channels within a given frequency band, the transmission signal can be formatted to be either vertical and horizontal, or circular right-hand and circular left-hand simultaneously per frequency. UPLINK DOWNLINK January 2006 Rev 1 1/12 www.st.com 12 1 What is a Low Noise Block (LNB)? TA0321 1 What is a Low Noise Block (LNB)? An LNB is a low noise block module, placed on the focus of the satellite dish antenna (parabola) that provides the following functions: ● Down conversion of the incoming signal from GHz range to the 910 MHz - 2150 MHz (for Europe) range called “first conversion signal”. This conversion allows the signal to be carried by an inexpensive coaxial cable towards t.


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