Introduction: RFMD (RF Micro Devices, Inc.) is an American company based in Greensboro, North Carolina, USA, specializing in the design, development, and production of RF integrated circuit components. These products are used for radio frequency integrated circuit amplification devices (RFICs) and signal processing transmission equipment in wireless communication. The company's main business includes producing spare parts for mobile phones, and currently RFMD is a major global supplier of power frequency amplifiers. The company also produces spare parts for wireless infrastructure, cable TV modems, personal communication systems, and two-way data pagers, and is committed to expanding the market for base stations and local wireless local area networks (WLANs). RFMD is proficient in various processing technologies widely used in the RF field and is a major manufacturer of gallium arsenide bipolar transistors, also known as GaAs HBTs. RFMD also invests in certain areas of semiconductor equipment to ensure its leading position in silicon (such as silicon germanium) processing. RFMD produces a range of wireless application products, such as power amplifiers, mixers, regulators, low-noise power amplifiers, receivers, jammers, and radio recorders. RFMD can provide a comprehensive range of RF integrated circuit amplification equipment to meet customer needs. RFMD is a leading supplier of cellular front-end in the world, with a wide product portfolio covering all air interface standards including GSM, EDGE, CDMA, WCDMA, HSPA+, TD-SCDMA, and LTE. Whether it's the best performance in its class or the lowest material list, RFMD offers products optimized for multiple mobile device layers. RFMD's cellular front-end product portfolio includes power amplifiers (PA), transmission (TxMs) modules, high-performance switches, switch filter modules (SFMS), and front-end power management.