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对毫米波宽带四倍频器的设计方法并进行了理论分析及计算仿真。介绍了利用平衡式结构对奇次谐波进行抑制,从而实现宽带偶次倍频的原理,提出了选择肖特基二极管的原则。利用HFSS仿真和优化电路结构,采用微带线鳍线结构实现了宽频带的毫米波二倍频器。在此基础上,采用两级倍频的方式实现了宽带毫米波四倍频器。设计的Ka波段毫米波四倍频器输入频率6.625～10 GHz,输入功率为10 dBm时,在26.5～40 GHz频率范围内,输出功率大于10 dBm,对三次和五次谐波的抑制大于20 dBc。
The design method of the millimeter-wave broadband quadruplexer is analyzed theoretically and calculated. This paper introduces the principle of using the balanced structure to suppress the odd harmonics so as to realize the even frequency doubling of wideband. The principle of selecting Schottky diode is proposed. HFSS simulation and optimization of circuit structure, the use of microstrip line fin structure to achieve a wideband millimeter-wave doubler. On this basis, using a two-stage frequency doubling to achieve a broadband millimeter-wave quadruple frequency. The designed Ka-band millimeter-wave quadruple frequency multiplier has an input frequency of 6.625 ~ 10 GHz and an output power of more than 10 dBm at a frequency of 26.5 ~ 40 GHz with an input power of 10 dBm. The suppression of the third and fifth harmonics is greater than 20 dBc.