A broadband LNA and mixer for digital video broadcasting applications using a 0.18-μm CMOS process
- A broadband LNA and mixer for digital video broadcasting applications using a 0.18-μm CMOS process
- Tian Qiang; 김은성; Cong Wang; 박민철; 김남영
- low noise amplifier; mixer; digital video broadcasting-satellite; complementary metal oxide semiconductor; broadband
- Issue Date
- Microwave and optical technology letters
- VOL 57, NO 9, 2092-2099
- In this study, a broadband low noise amplifier (LNA)/mixer for digital video broadcasting-satellite receiver tuner was fabricated by a 0.18-µm complementary metal oxide semiconductor (CMOS) process. The proposed broadband LNA receives positive feedback and incorporates a single-ended differential converter to mixer. Two attenuators are used to obtain good noise performance and high linearity. Moreover, the designed CMOS LNA/mixer achieved gain controls in 3-dB steps, an input second-order intercept of 1.37 dBm, and an input third-order intercept of −3.6 dBm in high-gain low-frequency mode. The 6.4-dB noise of LNA was achieved in the frequency range of 950–2150 MHz. The circuit consumes a total current of 25 mA at a supply voltage of 1.8 V and the chip area of the LNA and the mixer are 0.8 × 0.53 mm2 and 0.8 × 0.6 mm2, respectively. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:2092–2099, 2015
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