1. A method of downconverting a received radio-frequency (RF) signal in a wireless device, comprising: receiving the RF signal at an antenna in the wireless device; amplifying the received RF signal; filtering the amplified RF signals using a filter having an impedance matching that of a mixer via a matching network; inputting the filtered, amplified RF signals to a common-gate common-source (CGCS) mixer input stage, wherein the CGCS mixer input stage comprises: an input for receiving differential input signals from the matching network, a current source, a common-source stage including transistors coupled to the input and the current source, a common-gate stage including transistors coupled to the input and the common-source stage, and an output coupled to a mixer, wherein the transistors of the common-gate stage comprises a pair of N-channel Metal Oxide Semiconductor (NMOS) transistors, each NMOS transistor of the pair of NMOS transistors in the common-gate stage includes a drain coupled to the common-source stage, a gate coupled to one of the differential input signals, and a source coupled to another of the differential input signal; and mixing the filtered, amplified RF signals to output a downconverted RF signal.