SiRF Technology, Inc. was founded in 1995 to bring GPS technology and other wireless communications innovations to a wide range of consumer applications. SiRF has extensive experience in GPS, spread-spectrum, radio frequency (RF), semiconductor, software and communications technologies. Operating as a fabless communications IC company with an intellectual property (IP) licensing model, SiRF is able to concentrate its resources on developing high-performance, cost-effective and high-quality chip set, IP and software solutions that will serve high-growth markets such as consumer GPS navigation and wireless communications. SiRF has roughly a 30% share of the GPS market. As the adoption of low cost GPS chipsets grows in mobile phones, SiRF will be able to offer a single chip solution into the non-CDMA handsets. The analyzed circuits include a low noise amplifier, two local oscillator signal buffers, two down converting mixers, a polyphase filter and a bias generator. Get inside the key block of this device with Chipworks circuit analysis.