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一、引言在晶体管高频功率放大器中,由于其输入、输出阻抗较低,所以通常做成宽带不调谐系统。而它们之间的阻抗匹配和功率传输则靠称为“宽带变压器”的器件来实现。通常所用的变压器是依靠磁耦合传输功率的。它的等效电路如图(1)所示。
I. INTRODUCTION In the transistor high-frequency power amplifier, because of its low input and output impedance, it is usually made of broadband non-tuning system. Impedance matching and power transfer between them rely on devices called “broadband transformers.” Transformers are usually used to rely on magnetic coupling transmission power. Its equivalent circuit is shown in Figure (1).