In this paper, a class-E power amplifier using a harmonic control network consisting of a bandpass filter and a harmonic control circuit is presented. The advantage of using the bandpass filter in the harmonic control network is the elimination of the DC-block capacitor between the transistor and the load. As a result, losses due to this capacitor are eliminated at operating frequencies. In this design, a new narrow bandpass filter is used with a practical central frequency of 2.4 GHz. The filter carries the maximum power to the load due to its low insertion loss. On the other hand, the harmonic control circuit comprises a tunable elliptic resonator, which resonated in the third harmonic and a quadratic wavelength line, which controls the even harmonics. The input impedance of the harmonic controller circuit is also controlled by a microstrip transmission line that minimizes the parasitic effects of the transistor output. This design is fabricated and measured on the RO4001 board. The maximum measured power output of this narrow-band amplifier is 24 dBm, with 72% power added efficiency.

本文提出了一种使用由带通滤波器和谐波控制电路组成的谐波控制网络的E类功率放大器。在谐波控制网络中使用带通滤波器的优点是省去了晶体管和负载之间的隔直电容。结果，在工作频率下消除了由于该电容器引起的损耗。在该设计中，使用了新的窄带通滤波器，其实际中心频率为2.4 GHz。由于其低插入损耗，该滤波器将最大功率传递给负载。另一方面，谐波控制电路包括在三次谐波中谐振的可调谐椭圆谐振器和控制偶数谐波的二次波长线。谐波控制器电路的输入阻抗也由微带传输线控制，该传输带可最大程度地减小晶体管输出的寄生效应。该设计是在RO4001板上制造和测量的。该窄带放大器的最大测量功率输出为24 dBm，功率附加效率为72％。