An Integrated 0.6-4.6 GHz, 5-7 GHz, 10-14 GHz, and 20-28 GHz Frequency Synthesizer for Software-Defined Radio Applications

被引:48
作者
Osmany, Sabbir A. [1 ]
Herzel, Frank [1 ]
Scheytt, J. Christoph [1 ]
机构
[1] IHP, D-15236 Frankfurt, Oder, Germany
关键词
Cognitive radio (CR); frequency synthesizer; low phase noise; software-defined radio (SDR); voltage-controlled oscillator (VCO); wide tuning range; wireless communication; PHASE-NOISE; SIGE BICMOS; RF; TECHNOLOGY; COLPITTS; CIRCUIT; VCOS;
D O I
10.1109/JSSC.2010.2051476
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 present an integrated frequency synthesizer which is able to provide in-phase/quadrature phase signal over the frequency bands 0.6-4.6 GHz, 5-7 GHz, 10-14 GHz, and in-phase signal over 20-28 GHz for software-defined radio applications. An integrated voltage-controlled oscillator (VCO) with 34% tuning range and a set of high-speed dividers are used to accomplish all the frequencies. To achieve a wide tuning range while keeping a low gain and a low phase noise, the VCO employs digitally controlled sub-bands. The measured PLL phase noise is -108 dBc/Hz, -121 dBc/Hz, and -135 dBc/Hz at 1 MHz offset for 24 GHz, 4 GHz, and 700 MHz, respectively. Fabricated in a 0.25 mu m SiGe BiCMOS process, the synthesizer occupies a chip area of 4.8 mm(2). The synthesizer was optimized for reconfigurable base station applications, but can also be used for cognitive radio, radar systems, satellite communication, and high-speed digital clock generation.
引用
收藏
页码:1657 / 1668
页数:12
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