“…Because the input tuning switch affects the noise performance, we try to avoid the degradation of the noise figure by placing a tuning switch at the inter-stage and output stage. The band selection and gain control are implemented by employing a dual-band LNA topology using the switched resonator at the inter-stage and output, so as to maintain very good noise performance (Dao, Bui, & Park, 2007;Li, Quintal, & O, K.K., 2004;Lu, Hsieh, & Wang, 2005). The proposed LNA can be switched to 2.5-GHz-band or the 3.5-GHz-band operation using the transistor switches at the output stage.…”