2results about How to "Good return loss" patented technology

The application relates to the technical field of integrated circuits, and discloses an analog front-end circuit applied to a super-high-speed SerDes receiver, a transimpedance amplifier of which comprises a pair of input transistors, the gates of which are connected and connected with a T coil composed of a first inductor and a second inductor, one end of the first inductor is connected with the gate and connected in parallel with a second capacitor, the other end receives a front-stage input and is connected in parallel with one end of the second inductor and a first capacitor, the drains of the input transistors are connected and connected with a T coil composed of a fifth inductor and a sixth inductor, one end of the sixth inductor is connected with the drain and connected in parallel with a third capacitor, the other end outputs an amplified signal and is connected in parallel with one end of the fifth inductor and a fourth capacitor, and the other end of the second inductor and the other end of the fifth inductor are directly connected in series with a first resistor and a third inductor. The application optimizes zero-pole compensation high-frequency loss and optimizes impedance matching to reduce reflection, and better guarantees the integrity of signals.