[February 14, 2012]

Peregrine Semiconductor Files Patent Infringement Actions Against RF Micro Devices and Motorola Mobility

Peregrine Semiconductor Corporation (Peregrine), a leading provider of high-performance radio-frequency (RF) integrated circuits (ICs), today announced that it has filed a complaint with the U.S. International Trade Commission (ITC) and a lawsuit in U.S. District Court alleging the infringement of certain Peregrine patents relating to RFICs and switching technology by RF Micro Devices (News - Alert), Inc. (RFMD) and Motorola Mobility, Inc.

The complaint filed with the ITC claims that certain of RFMD's products and certain of Motorola (News - Alert) Mobility's smartphones infringe Peregrine patents relating to silicon-on-insulator (SOI) technology for RF ICs and seeks, among other remedies, an exclusion order preventing the importation and sale of infringing products in the United States. Separately, Peregrine also filed a suit in U.S. District Court for the Central District of California alleging the same infringement and seeking, in addition to damages, to permanently enjoin RFMD (News - Alert) and Motorola Mobility from further infringement.

"Peregrine has emerged as a leading supplier of high-performance RF CMOS devices that are used extensively in the latest generation of mobile devices," said Jim Cable, president and chief executive officer. "Our innovative products are based on Peregrine's proprietary UltraCMOS^® process and design technologies and are the result of more than 20 years of intensive research and development activity and the investment of approximately two hundred million dollars. We intend to vigorously protect our intellectual property and our resltant advancements in the field."

Peregrine has been awarded numerous U.S. and foreign patents based on its pioneering work in developing and manufacturing high-performance products for the RF Front-End, which can be produced using standard CMOS-based semiconductor manufacturing processes. These patented innovations allow RF solutions to be produced with a combination of high levels of monolithic integration and performance, small size and low power consumption.

About Peregrine Semiconductor

Peregrine Semiconductor is a fabless provider of high-performance radio frequency integrated circuits, or RFICs. The Company's solutions leverage proprietary UltraCMOS technology, which enables the design, manufacture, and integration of multiple RF, mixed-signal, and digital functions on a single chip. The Company's products deliver what we believe is an industry leading combination of performance and monolithic integration, and target a broad range of applications in the aerospace and defense, broadband, industrial, mobile wireless device, test and measurement equipment, and wireless infrastructure markets. UltraCMOS technology combines the ability to achieve the high levels of performance of traditional specialty processes, with the fundamental benefits of standard CMOS, the most widely used semiconductor process technology. UltraCMOS technology utilizes a synthetic sapphire substrate, a near-perfect electrical insulator, providing low parasitic capacitance and enabling high signal isolation and excellent broadband linearity.

These attributes result in RF devices with excellent high-frequency performance and power handling performance, reduced crosstalk between frequencies, and enhanced network efficiency. Peregrine Semiconductor has engineered design advancements, including the patented HaRP™ technology which significantly improves harmonic and linearity performance, and the patent-pending DuNE™ technology, a circuit design technique used to develop advanced digitally tunable capacitor (DTC) products. The Company offers a broad portfolio of high-performance RFICs including switches, digitally tunable capacitors (DTCs), digital attenuators, frequency synthesizers, mixers and prescalers, and is developing power amplifiers (PAs) and DC-DC converters. Peregrine products are sold worldwide through direct sales and field applications engineering staff and a network of independent sales representatives and distribution partners. Additional information is available on the Company's website at www.psemi.com.

The Peregrine Semiconductor name, logo and UltraCMOS are registered trademarks and HaRP and DuNE are trademarks of Peregrine Semiconductor Corporation. All other trademarks are the property of their respective owners.

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