[논문]A Low-Voltage, Low-Power, and Low-Noise UWB Mixer Using Bulk-Injection and Switched Biasing Techniques

Myoung-Gyun Kim; Hee-Woo An; Yun-Mo Kang; Ji-Young Lee; Tae-Yeoul Yun

doi:10.1109/TMTT.2012.2198238

A Low-Voltage, Low-Power, and Low-Noise UWB Mixer Using Bulk-Injection and Switched Biasing Techniques

IEEE transactions on microwave theory and techniques, v.60 no.8, 2012년, pp.2486 - 2493

Myoung-Gyun Kim (Dept. of Electr. & Comput. Eng., Hanyang Univ., Seoul, South Korea) , Hee-Woo An (Dept. of Electr. & Comput. Eng., Hanyang Univ., Seoul, South Korea) , Yun-Mo Kang (Dept. of Electr. & Comput. Eng., Hanyang Univ., Seoul, South Korea) , Ji-Young Lee (Dept. of Electr. & Comput. Eng., Hanyang Univ., Seoul, South Korea) , Tae-Yeoul Yun (Dept. of Electr. & Comput. Eng., Hanyang Univ., Seoul, South Korea)

Abstract ▼ AI-Helper

This paper presents a low-voltage, low-power, low-noise, and ultra-wideband (UWB) mixer using bulk-injection and switched biasing techniques. The bulk-injection technique is implemented for a low supply voltage, thus resulting in low power consumption. This technique also allows for a flat conversion gain over a wide range of frequencies covering the full UWB band; this is a result of the integration of the RF transconductance stage and the local oscillator switching stage into a single transistor that is able to eliminate parasitic effects. Moreover, since the bulk-injection transistors of the mixer are designed to operate in the subthreshold region, current dissipation is reduced. A switched biasing technique for the tail current source, in place of static biasing, is adopted to reduce noise. The effects of modulated input signals, such as AM and FM, are simulated and measured to demonstrate the robustness of the switched biasing technique. The proposed mixer offers a measured conversion gain from 7.6 to 9.9 dB, a noise figure from 11.7 to 13.9 dB, and input third-order intercept point from - 10 to - 15.5 dBm, over 2.4 to 11.9 GHz, while consuming only 0.88 mW from a 0.8-V supply voltage. The chip size including the test pads is 0.62×0.58 mm2 using a 0.18-μm RF CMOS process.

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A Low-Voltage, Low-Power, and Low-Noise UWB Mixer Using Bulk-Injection and Switched Biasing Techniques

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A Low-Voltage, Low-Power, and Low-Noise UWB Mixer Using Bulk-Injection and Switched Biasing Techniques

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