Abstract: “A T-coil network can be implemented as a high order filter for bandwidth extension. This technique is incorporated into the design of the input matching and output peaking networks of a low-noise amplifier. The intrinsic capacitances within the transistors are exploited as a part of the wideband structure to extend the bandwidth. Using the proposed topology, a wideband low-noise amplifier with a bandwidth of 0.1–8 GHz, a maximum gain of 18 dB and noise figure of 6 dB (min) is achieved.”

Keywords: T-coil network, feedback, bandwidth extension, gainflatness, center-tap inductor, wideband low-noise amplifier (LNA).