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首页> 外文期刊>International Journal of Microwave and Wireless Technologies >A 1 to 32 GHz broadband multi-octave receiver for monolithic integrated vector network analyzers in SiGe technology
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A 1 to 32 GHz broadband multi-octave receiver for monolithic integrated vector network analyzers in SiGe technology

机译：用于SiGe技术的单片集成矢量网络分析仪的1至32 GHz宽带多倍频程接收器

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摘要

A multi-octave receiver chain is presented for the use in a monolithic integrated vector network analyzer. The receiver exhibits a very wide frequency range of 1-32 GHz, where the gain meets the 3 dB-criterion. The differential receiver consists of an ultra-wideband low noise amplifier, an active mixer and an output buffer and exhibits a maximum conversion gain (CG) of 16.6 dB. The main design goal is a very flat CG over five octaves, which eases calibration of the monolithic integrated vector network analyzer. To realize variable gain functionality, without losing much input matching, an extended gain control circuit with additional feedback branch is shown. For the maximum gain level, a matching better than -10 dB is achieved between 1-28 GHz, and up to 30.5 GHz the matching is better than -8.4 dB. For both, the input matching and the gain of the LNA, the influence of the fabrication tolerances are investigated. A second gain control is implemented to improve isolation. The measured isolations between RF-to-LO and LO-to-RF are better than 30 dB and 60 dB, respectively. The LO-to-IF isolation is better than 35 dB. The noise figure of the broadband receiver is between 4.6 and 5.8 dB for 4-32 GHz and the output referred 1-dB-compression-point varies from 0.1 to 4.3 dBm from 2-32 GHz. The receiver draws a current of max. 66 mA at 3.3 V.
机译：提出了一种多倍频程接收器链，用于单片集成矢量网络分析仪。接收器具有1-32 GHz的非常宽的频率范围，其中增益满足3 dB标准。差分接收器由一个超宽带低噪声放大器，一个有源混频器和一个输出缓冲器组成，并具有16.6 dB的最大转换增益（CG）。主要设计目标是在五个八度音阶上实现非常平坦的CG，从而简化单片集成矢量网络分析仪的校准。为了实现可变增益功能，而又不会失去很多输入匹配，示出了具有附加反馈支路的扩展增益控制电路。对于最大增益水平，在1-28 GHz之间可实现优于-10 dB的匹配，在高达30.5 GHz时，匹配优于-8.4 dB。对于LNA的输入匹配和增益，研究了制造公差的影响。实现第二增益控制以改善隔离度。 RF至LO和LO至RF之间的隔离度分别优于30 dB和60 dB。 LO至IF隔离度优于35 dB。对于4-32 GHz，宽带接收器的噪声系数在4.6至5.8 dB之间，在2-32 GHz时，输出参考的1-dB压缩点在0.1至4.3 dBm之间变化。接收器吸收最大电流。在3.3 V下为66 mA。

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