1 results about "Transceiver design" patented technology

This invention discloses a single-ended broadband variable gain amplifier and an optical transceiver system, relating to the field of optical transceiver design technology. The single-ended broadband variable gain amplifier includes a power supply terminal, an input port, an output port, multiple transconductance circuits, and multiple source degradation networks. The input port receives a single-ended input voltage signal. By setting multiple parallel-connected transconductance circuits and source degradation networks corresponding one-to-one with each transconductance circuit, each source degradation network can independently control the electrical connection state between the source of its corresponding transconductance circuit and the power supply and ground terminals, thereby adjusting the magnitude of the output current of each transconductance circuit. This, in turn, changes the total current superimposed on the output port by multiple transconductance circuits, achieving variable gain adjustment. The technical solution provided by this invention can solve the technical problems of existing single-ended broadband variable gain amplifiers, such as poor bandwidth consistency during gain adjustment, severe bandwidth limitation due to high-frequency parasitic capacitance, and high power consumption of differential structures, which is detrimental to single-ended signal reception.