SUNNYVALE, Calif., Sept. 15, 2004-- Atheros Communications, Inc. (NASDAQ:ATHR) today announced that Craig Barratt, president and chief executive officer and Jack Lazar, vice president and chief financial officer, will present at the Banc of America Securities 34^th Annual Investment Conference Wednesday, Sept. 22 at the Ritz-Carlton Hotel in San Francisco.

The presentation is scheduled for 4:00 p.m. Pacific Time and will be web cast live via the investor relations section of the Atheros website at www.atheros.com.

About Atheros Communications, Inc.

Atheros Communications is a leading developer of semiconductor system solutions for wireless communications products. Atheros combines its wireless systems expertise with high-performance radio frequency (RF), mixed signal and digital semiconductor design skills to provide highly integrated chipsets that are manufacturable on low-cost, standard complementary metal-oxide semiconductor (CMOS) processes. Atheros technology is being used by a broad base of leading customers, including personal computer and networking equipment manufacturers. For more information, visit www.atheros.com or send email to info@atheors.com.

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"Safe Harbor" Statement under the Private Securities Litigation Reform Act of 1995: Statements in this press release regarding Atheros Communications's business which are not historical facts are "forward-looking statements" that involve risks and uncertainties. For a discussion of such risks and uncertainties, which could cause actual results to differ from those contained in the forward-looking statements, see "Risk Factors" in the Company's Annual Report or Form 10-K for the most recently ended fiscal year.