Abstract: A mixer-first receiver with enhanced selectivity and high dynamic range is proposed to remove the surface acoustic wave filter (SAW) in conventional receiver. The cross-coupled passive mixer is used to select the channel of the baseband amplifier, which provides a high linear passive shunt path for the out-of-band current, and reduces the influence of nonlinearity on the baseband amplifier while maintaining the wideband input matching. In addition, capacitive negative feedback across the baseband amplifier serves as a blocker bypassing path, while an extra capacitive positive feedback path offers further blocker rejection. The receiver front-end circuit is designed in 180 nm CMOS technology. This receiver has a gain of 20 dB, an out-of-band third-order intercept point of 38 dBm, noise figure of 10 dB, and layout area of 0.8 mm².