An integrated receiver with channel selection and image rejection substantially implemented on a single CMOS integrated circuit is described. A receiver front end provides programable attenuation and a programable gain low noise amplifier. Frequency conversion circuitry advantageously uses LC filters...http://www.google.com.tw/patents/US20020140869?utm_source=gb-gplus-share專利 US20020140869 - System and method for providing a low power receiver design
