A triple-tuned ultra-wideband VCO

被引：9

作者：

Tsuru, Masaomi ^{[1
]}

Kawakami, Kenji ^{[1
]}

Tajima, Ken'ichi ^{[1
]}

Miyamoto, Kazuhiro ^{[1
]}

Nakane, Masafumi ^{[1
]}

Itoh, Kenji ^{[1
]}

Miyazaki, Moriyasu ^{[1
]}

Isota, Yoji ^{[1
]}

机构：

[1] Mitsubishi Electr Corp, Informat Technol Res & Dev Ctr, Kanagawa 2478501, Japan

来源：

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES | 2008年 / 56卷 / 02期

关键词：

broadband communication; flip-chip devices; radar applications; tunable circuits and devices; varactors; voltage-controlled oscillators (VCOs);

D O I：

10.1109/TMTT.2007.913377

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We have already proposed a triple-tuned voltage-controlled oscillator (VCO) for achieving an ultra-wideband characteristic. The triple-tuned VCO consists of an active device and three tuned circuits. The fabricated VCO has achieved the oscillation bandwidth of 5.6 - 16.8 GHz and the phase noise of - 114.9 dBc/Hz +/- 2.9 dB at 1-MHz offset from the carrier. In this paper, for the first time, the conditions that the VCO achieves the ultra-wideband characteristic are clarified by formulation and simulation. It is also clarified that a transistor of the larger emitter size is suitable for the wideband VCO. In addition, the performances of the proposed VCO are compared with other reported wideband VCOs. As a result, it is shown that the proposed VCO has achieved the lowest figure of merit in the C-K u-band.

引用

页码：346 / 354

页数：9

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