Chip Design of a Wide Tuning Range and Low Supply Voltage Voltage-Controlled Oscillators for UWB and 10GHz Application
碩士 === 國立彰化師範大學 === 積體電路設計研究所 === 95 === In this thesis, the designed two voltage-controlled oscillators are operated individually in TSMC 0.18um 1P6M RF/Mixer-signal CMOS process for the UWB system and 10GHz. First, we propose a VCO with 2GHz tuning range. This design of the VCO is combined th...
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| Format: | Others |
| Language: | en_US |
| Published: |
2007
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| Online Access: | http://ndltd.ncl.edu.tw/handle/85929184910139003009 |
| Summary: | 碩士 === 國立彰化師範大學 === 積體電路設計研究所 === 95 === In this thesis, the designed two voltage-controlled oscillators are operated individually in TSMC 0.18um 1P6M RF/Mixer-signal CMOS process for the UWB system and 10GHz.
First, we propose a VCO with 2GHz tuning range. This design of the VCO is combined the way of band-switch and PMOS varactor to achieve wide tuning range. We must to design each frequency sub-band is sufficient to cover each other to sustain the robust process and environmental variation. Experimental results show that LC-VCO is -101dBc/Hz to -110dBc/Hz with 1MHz offset frequency. The oscillation frequency is ranging from 2.75GHz to 4.55 GHz and the maximum VCO gain can achieve 270MHz/V.
Second, we propose a Low voltage high performance CMOS VCO for 10 GHz application. The VCO in our design only use NMOS cross-couple pair replace with the complementary NMOS and PMOS pairs. In simulation results, the chip acheves the phase noise is -111.6dBc/Hz at 1MHz offset, tuning range from 9.74GHz to 10.57GHz and 3.6mW power consumption only for 0.8V supply voltage.
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