variable gain的用法和樣例：
例句
- To gain further bisymmetric baseband signals, the proposed transconductance stage is formed with a cross-coupled type.
之后經(jīng)過(guò)可變增益放大器將升頻后之訊號放大到功率放大器所要求之強度。 - A low power mixer and a basedband variable gain amplifier are designed for frequency downconversion and gain-adjustment, respectively.
最后實(shí)現了一個(gè)低功率的混頻器及基頻可變增益放大器，且此放大器可線(xiàn)性調整增益。
