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TeletronikTeletronik LTE FilterLTE Filter

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What is LTE ?What is LTE ?

How does LTE interfere with DTT ?How does LTE interfere with DTT ?

How to filter out LTE interference ?How to filter out LTE interference ?

Soontai LTE filterSoontai LTE filter

ContentsContents

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What is LTE ?What is LTE ? LTE (Long Term Evolution) is a 4th generation (4G) standard for mobile communication.

Currently 17 communication companies worldwide have adopted LTE, more than 100 more are about to follow.

LTE uses

- FDD (Frequency Division Duplexing) and

- TDD (Time Division Duplexing) protocols

FDD : LTE base stations and handheld devices use different bands

TDD : LTE base stations and handheld devices use the same bands

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FDD LTE 800MHz SpectrumFDD LTE 800MHz Spectrum

Digital TV Frequency LTE Downlink Band LTE Uplink Band

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LTE-800 TransmissionLTE-800 Transmission Interferance into DTT Interferance into DTT

LTE Base Station

How does LTE interfere with DTT ?How does LTE interfere with DTT ?

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LTE User Equipment

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LTE Interference to DTTLTE Interference to DTT

When LTE uses the 800 MHz “digital dividend” (Europe 790-864MHz) or the 700 MHz “white space” band (USA 698-806MHz) there will be interference with digital video broadcast signals (DVB-T/ATSC).

DTV picture noise: How to solve this problem?

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DVB-Tsignal

LTEsignal

LTE Interferes with DTTLTE Interferes with DTT

DVB-T set-top box

TV

Antenna

LTE signal

LTE Base Station

LTEUser Equipememt

DVB-T signal

LTE Filter

DVB-Tsignal

LTEsignal

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TeletronikTeletronik LTE Filter LTE Filter

LTE is the 4th generation mobile communication standard. This standard uses the frequency band next to the DVB-T band (790 - 862MHz in Europe, 698 - 806MHz in the Americas), which will lead to interferences with DVB TV or set-top-boxes. According to tests from Ofcom this interference can be eliminated with the help of a high rejection low pass filter.

Our LTE Filters pass all requirements to eliminate interferences by LTE signals on digital broadcast reception. As a professional filter designer, teletronik can offer the LTE filter in a variety of packages and frequencies for various markets. Your inquiries are welcome.