Search results for: Che-Chi Mao
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A simple low phase noise and wide tuning range voltage-controlled oscillator (VCO) is designed for 10 GHz band application. The proposed oscillator adopts a complementary cross-coupled pair LC-VCO circuit with only one symmetrical inductor and implemented in TSMC 0.18-um CMOS process. A 10 GHz broadband CMOS double-balance mixer for communication receiver is presented. The broadband mixer is fabricated...
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A simple low phase noise and wide tuning range voltage-controlled oscillator (VCO) and mixer with charge injection designed for 10 GHz band application. The proposed oscillator adopts a complementary cross-coupled pair LC-VCO circuit with only one symmetrical inductor and implemented in TSMC 0.18-um CMOS process. At the supply voltage of 1.8 V, measured results achieve a tuning range of 9.6 to 11...
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An integer-N phase-locked loop (PLL) operating at 10 GHz is designed and fabricated in TSMC 0.18-um CMOS technology. The proposed PLL with a LC-tank voltage-controlled oscillator (VCO) and a mixed design of current mode logic (CML) and true single phase clock (TSPC) logic in the frequency divider achieves a tuning range from 8.75 GHz to 10.93 GHz and a phase noise of −113.4 dBc per Hertz at an offset...
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Microwave and Optical Technology Letters > 53 > 5 > 1165 - 1169
This article proposes a wide tuning voltage‐controlled oscillator (VCO) by employing a transformer‐based LC‐tank and is fabricated in a TSMC 0.18 μm CMOS process with 1.5 V supply voltage. We choose decoupling effect to decrease primary and secondary inductances and then decrease quality factors to obtain higher oscillation frequency and wide tuning range. Measurement results show that at the supply...
