D波段功率放大模块研制

Development of D‒band Power Amplifier module

摘要:

研制了一款工作在D波段的功率放大器模块。对射频输入输出过渡结构和直流稳压时序电路进行了设计。射频输入输出过渡结构采用基于楔形波导膜片的波导-接地共面波导过渡实现了同向转换，通过类共面波导的金丝键合方式降低了功放芯片与腔体之间缝隙对模块性能的影响。漏极偏置电路通过并联两个稳压芯片提高了直流稳压时序电路的稳定性。设计扼流槽结构有效降低了模块级联的传输损耗。测试结果表明，模块在144~166 GHz范围内小信号增益大于10 dB，最大增益大于17 dB；输出功率大于27 dBm，最大输出功率大于31 dBm。

Abstract:

A Power Amplifier(PA) module operating in the D-band has been developed. The design includes a Radio Frequency(RF) input/output transition structure and a Direct Current(DC) voltage regulation timing circuit. The RF input/output transition structure utilizes a waveguide-coplanar waveguide transition based on wedge-shaped waveguide film, achieving co-directional conversion and reducing the impact of the gap between the power amplifier chip and the cavity on module performance through a gold wire bonding method similar to coplanar waveguides. The drain bias circuit enhances the stability of the DC voltage regulation timing circuit by paralleling two voltage regulation chips. The design of the choke slot structure effectively reduces the transmission loss when modules are cascaded.Test results indicate that the module has a small-signal gain greater than 10 dB and a maximum gain greater than 17 dB within the 144~166 GHz range; the output power is greater than 27 dBm, with a maximum output power greater than 31 dBm.