Sierra Monolithics

Sierra Monolithics WiMAX RF Transceiver IC Incorporated Into Volume Shipments of Alvarion's BreezeMAX™ PRO CPE

December 7, 2005

REDONDO BEACH, CA -- Sierra Monolithics (SMI), a leading supplier of high frequency mixed signal ICs and modules for the wireless and telecommunication industries, today announced the completion of the first quarter of volume shipments of SMI's RF transceiver chip as a important component of Alvarion's BreezeMAX PRO, its WiMAX customer premise equipment.

Alvarion (NASDAQ:ALVR) is the world's leading provider of wireless broadband solutions and the leading vendor in WiMAX deployments. The development teams of the two companies have collaborated closely for the last two years.

"SMI is proud to be part of the Alvarion team," said Charles Harper, the CEO of Sierra Monolithics. "The SMI7035 dual band transceiver provides a low cost high performance RF solution that supports high performance radios.

"IC-based solutions help to enable the next generation of low cost, wireless access solutions, such as the BreezeMAX PRO," Harper added. "We are solidly supporting volume shipments of this product today, and our strong product roadmap supports the continuing evolution of the highly promisingWiMAX market."

BreezeMAX™ is Alvarion's award-winning WiMAX platform. It was designed from the ground up in accordance with IEEE 802.16-2004 standards using OFDM technology for advanced non-line-of-sight (NLOS) functionality. Its carrier-class design supports broadband speeds and quality of service to enable carriers to offer multiple broadband voice data and services to thousands of subscribers in a single base station.

"We are pleased with the close working relationship we continue to have with Sierra Monolithics," said Zvika Harnik, president of Alvarion's Broadband Mobile Unit. "By working closely with silicon vendors such as Sierra Monolithics, we are able to develop and deploy leading edge customer premise equipment platforms as the WiMAX market expands. "The integration of SMI's new radio on a chip is another important milestone towards making WiMAX a mass market item."

Sierra Monolithics' WiMAX RFIC, the SMI7035, is a single chip dual band transceiver that makes possible the manufacture of low-cost customer premise equipment Broadband Wireless Access (BWA) applications. This product has been designed to be supportive of WiMAX compliant products. SMI7035 is a dual band transceiver incorporating full receive and transmit paths, with on-board synthesizers and VCOs. The transceiver tunes over the 2.3 to 2.7 GHz and 3.3 to 3.8 GHz bands, incorporating the majority of frequencies used by WiMAX applications worldwide.

About Sierra Monolithics
Sierra Monolithics Inc, based in Redondo Beach, Calif., is a leading supplier of high frequency mixed signal ICs and modules for the wireless and telecommunication industries. The privately held company is financially backed by venture capital firms US Venture Partners and Storm Ventures. For more information, visit www.monolithics.com or call (310) 698-1000.

About Alvarion
With more than 2 million units deployed in 130 countries, Alvarion is the worldwide leader in wireless broadband. The company provides systems to carriers, ISPs and private network operators and also helps them extend coverage of GSM and CDMA mobile networks to developing countries and other hard-to-serve areas.

Leading the WiMAX revolution, Alvarion has the most extensive deployments and proven product portfolio in the industry, covering the full range of frequency bands with both fixed and mobile solutions. Alvarion's products enable the delivery of business and residential broadband access, corporate VPNs, toll quality telephony, mobile base station feeding, hotspot coverage extension, community interconnection, public safety communications, and mobile voice and data. Alvarion works with several global OEM providers and more than 200 local partners to support its diverse global customer base in solving their last-mile challenges.

For more information, visit Alvarion's World Wide Web site at www.alvarion.com.

This press release contains forward -looking statements within the meaning of the "safe harbor" provisions of the Private Securities Litigation Reform Act of 1995. These statements are based on the current expectations or beliefs of Alvarion's management and are subject to a number of factors and uncertainties that could cause actual results to differ materially from those described in the forward -looking statements. The following factors, among others, could cause actual results to differ materially from those described in the forward-looking statements: inability to further identify, develop and achieve success for new products, services and technologies; increased competition and its effect on pricing, spending, third-party relationships and revenues; as well as the in ability to establish and maintain relationships with commerce, advertising, marketing, and technology providers and other risks detailed from time to time in filings with the Securities and Exchange Commission.

Information set forth in this press release pertaining to third parties has not been independently verified by Alvarion and is based solely on publicly available information or on information provided to Alvarion by such third parties for inclusion in this press release. The web sites appearing in this press release are not and will not be included or incorporated by reference in any filing made by Alvarion with the Securities and Exchange Commission, which this press release will be a part of.

For future Alvarion press releases or a complete Investor Kit, email Carmen Deville in Investor Relations or call her at (650) 314-2653.

CONTACT: Public Relations, Sierra Monolithics