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为了满足340 GHz高速OOK无线通信的需求,完成了340 GHz零偏置波导检波器的设计、加工和测试。首先,在高频电磁仿真软件HFSS中对准垂直结构二极管(QVD)进行建模仿真,并结合二极管的非线性模型确定二极管的阻抗;随后设计了输入波导-微带转换以及低通滤波器等无源结构,并同时对二极管进行阻抗匹配;最后进行了检波器的加工和测试。测试结果表明该检波器的电压灵敏度在334 GHz时最佳,最大值为2 210 V/W,并且在315 GHz~357 GHz频率范围内的典型值为1 400 V/W,其对应的等效噪声功率典型值为5 p W·Hz-0.5。最后,还利用该检波器进行了340 GHz频段的高速OOK信号接收实验,结果表明,该检波器能够近乎无误地检测10 Gbps的OOK信号,并且在OOK信号速率为15 Gbps时,检波器解调得到的误码率为3.15×10~(-7),证明了该检波器的高速信号检测能力能够满足高速OOK无线通信系统的需求。
To meet the needs of 340 GHz high-speed OOK wireless communications, the design, fabrication and testing of a 340 GHz zero-offset waveguide detector was completed. First of all, in the high-frequency electromagnetic simulation software HFSS aligned vertical structure diode (QVD) modeling and simulation, combined with the diode nonlinear model to determine the diode impedance; followed by the design of the input waveguide - microstrip conversion and low-pass filter Passive structure, and at the same time the diode impedance matching; Finally, the detector processing and testing. The test results show that the voltage sensitivity of this detector is the best at 334 GHz with a maximum value of 2 210 V / W and a typical value of 1 400 V / W in the 315 GHz to 357 GHz frequency range, with the equivalent equivalent The typical noise power is 5 pW · Hz-0.5. Finally, the receiver was used to perform high-speed OOK signal reception experiment in the 340 GHz band. The results show that the detector can detect 10 Gbps OOK signal almost without error, and the detector demodulates when the OOK signal rate is 15 Gbps The obtained bit error rate is 3.15 × 10 ~ (-7), which proves that the detector’s high-speed signal detection capability can meet the demand of high-speed OOK wireless communication system.