| 0.34 THz无线通信收发前端 |
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| 引用本文： | 王成,陆彬,缪丽,邓贤进.0.34 THz无线通信收发前端[J].强激光与粒子束,2013,25(6):1530-1534. |
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| 作者姓名： | 王成 陆彬 缪丽 邓贤进 |
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| 作者单位： | 1.中国工程物理研究院 电子工程研究所, 太赫兹研究中心, 四川 绵阳 621 900 |
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| 摘 要： | 描述了一种基于肖特基二极管技术的0.34 THz无线通信收发前端。该前端采用超外差结构，由0.34 THz谐波混频器、0.17 THz本振8倍频链和偏置电路组成。0.34 THz谐波混频器基于反向并联肖特基二极管，可以实现信号的上变频发射和下变频低噪声检测。0.17 THz本振8倍频链由三级二倍频及驱动放大链路组成，可将20~22.5 GHz信号倍频至0.16~0.18 THz，为混频器提供5~10 dBm左右的本振信号。实验测试结果表明:该前端用于信号发射时，在0.34 THz频点的饱和输出功率为-14.58 dBm；用于信号检测时，最低单边带(SSB)变频损耗为10.0 dB，3 dB中频带宽约30 GHz。限于测试条件，未能测试前端接收噪声温度，仿真得到的双边带噪声温度数值低于1000 K。在该前端基础上，完成了首次基于16QAM 数字调制体制的0.34 THz无线通信实验，传输速率达3 Gb/s。
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| 关 键 词： | 太赫兹 无线通信 收发前端 肖特基二极管 |
| 收稿时间： | 2012-12-06; |
0.34 THz T/R front-end for wireless communication |
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| Wang Cheng,Lu Bin,Miao Li,Deng Xianjin.0.34 THz T/R front-end for wireless communication[J].High Power Laser and Particle Beams,2013,25(6):1530-1534. |
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| Authors: | Wang Cheng Lu Bin Miao Li Deng Xianjin |
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| Affiliation: | 1.Terahertz Research Center,Institute of Electronic Engineering,CAEP,Mianyang 621900,China |
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| Abstract: | This article presents a 0.34 THz T/R front-end based on Schottky barrier diode (SBD) techniques. It is designed as a superheterodyne structure, and consists of 0.34 THz sub-harmonic mixer, 0.17 THz X8 multiplier chain and bias circuit. The 0.34 THz sub-harmonic mixer based on anti-parallel diodes is used to transmit and detect the THz signal. The 0.17 THz X8 multiplier chain is cascaded by three doublers and driven amplifiers, which could generate 0.16-0.18 THz local oscillation (LO) signal from 20-22.5 GHz with output power of 5-10 dBm. Experimental measurement indicates the maximum output power of 0.34 THz front end is -14.58 dBm, the lowest single-sideband (SSB) conversion loss is 10.0 dB, and 3 dB intermediate frequency (IF) bandwidth is about 30 GHz. Limited by measurement instruments, the double-sideband (DSB) noise temperature has not been measured, but the calculated value is below 1000 K. The 0.34 THz communication with 16QAM high order modulation has been realized with this front-end, and the data rate is 3 Gb/s. |
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| Keywords: | wireless communication T/R front-end Schottky diode |
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