By Business Wire, September 25, 2013, 07:00:00 AM EDT
- TV Tuners Need Good LTE Protection Ratio To Prevent Interference;
Whitepaper Demonstrates How LTE Bands Adjacent to Digital TV Bands Can
Create Signal Disruptions
CARLSBAD, Calif.--(BUSINESS WIRE)--
A new whitepaper from MaxLinear Inc. (NYSE:MXL), a
leading provider of integrated radio frequency (RF) and mixed-signal
integrated circuits for broadband communications applications,
provides an in-depth look at the issue of television signal interference
caused by proximity to 4G LTE signals, as countries around the world
shut off analog terrestrial TV services and switch to all digital
When digital television frequency bands are adjacent to LTE bands, as is
the case with the 700 MHz and 800MHz LTE frequency bands, there is a
high likelihood that LTE signals can interfere with television signals.
Digital TVs and set-top boxes must have sufficient interference
rejection capabilities in the tuner, or additional signal filtering to
eliminate the problem. Some countries that have recently deployed LTE
services are finding that the cost can be up to $500 per home to fix the
The whitepaper, entitled LTE Interference on Digital TV in Brazil
can be downloaded from the MaxLinear website), is a result of the
collaboration between Dr. Glenn Chang, Cofounder and Senior Director of
Technical Marketing at MaxLinear and Prof. Dr. Gunnar Bedicks, Chief
Researcher at Mackenzie Presbyterian University's DTV Laboratory in Sao
Their study measured LTE interference in five use cases that involved
indoor/outdoor digital TV antennas in the presence or absence of a
booster (amplifier). Four of the use cases were for single-family homes,
and the fifth was for a multi-dwelling unit scenario.
Critical receiver performance parameters were taken into consideration,
including sensitivity, maximum signal strength and receiver linearity.
The paper discusses possible mitigation techniques, such as those
offered by MaxLinear, which can result in robust receiver performance
even in the presence of a harsh LTE interferer.
"Countries moving from analog to digital television coverage are
discovering that LTE signals can interfere with digital TV reception,"
said Brian Sprague, MaxLinear Vice President and General Manager,
Broadband and Consumer Products. "MaxLinear has developed advanced tuner
technology that can mitigate this interference, allowing digital TV and
STB OEMs to provide a higher quality picture that keeps customers happy."
About MaxLinear, Inc.
MaxLinear, Inc. is a leading provider of radio-frequency and
mixed-signal semiconductor solutions for broadband communications
applications. MaxLinear is located in Carlsbad, California, and its
address on the Internet is www.maxlinear.com.
MxL, Full-Spectrum Capture, FSC and the MaxLinear logo are trademarks of
MaxLinear, Inc. Other trademarks appearing herein are the property of
their respective owners.
Cautionary Note About Forward-Looking Statements
This press release contains "forward-looking" statements within the
meaning of federal securities laws. Forward-looking statements include,
among others, statements concerning or implying future financial
performance or trends and growth opportunities affecting MaxLinear, in
particular statements relating to the performance of MaxLinear's tuner
technology in the presence of LTE interference. These forward-looking
statements involve known and unknown risks, uncertainties, and other
factors that may cause actual results to differ materially from any
future results expressed or implied by these forward-looking statements.
We cannot predict whether or to what extent that we will realize
revenues from our product offerings. Forward-looking statements are
based on management's current, preliminary expectations and are subject
to various risks and uncertainties, including (among others) intense
competition in our industry; the ability of our customers to cancel or
reduce orders; uncertainties concerning how end user markets for our
products will develop; our lack of long-term supply contracts and
dependence on limited sources of supply; potential decreases in average
selling prices for our products; and on-going intellectual property
litigation related to our hybrid television tuner products. In addition
to these risks and uncertainties, investors should review the risks and
uncertainties contained in MaxLinear's filings with the United States
Securities and Exchange Commission, including risks and uncertainties
identified in our Quarterly Report on Form 10-Q for the quarter ended
June 30, 2013. All forward-looking statements are qualified in their
entirety by this cautionary statement. MaxLinear is providing this
information as of the date of this release and does not undertake any
obligation to update any forward-looking statements contained in this
release as a result of new information, future events, or otherwise.
Source: MaxLinear Inc.