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A novel low-noise amplifier (LNA) designed for COMPASS receiver is proposed in this paper. Inductively degenerated technique and resistive feedback technique are utilized to decrease the noise figure. It not only lowers the noise figure, but also decreases the area of the chip. SiGe-BiCMOS process is used to design this LNA. With a supply voltage of 1.8V, the proposed LNA achieves an NF of 1.17 dB...
An improved current bleeding CMOS mixer is designed in this paper. The conversion gain of the mixer is increased and the flicker noise of the mixer is reduced by inserting the inductor to form resonant circuit with parasitic capacitors of the source ports of the switch transistors in Gilbert mixer. The mixer is designed by using SMIC 0.18 um CMOS process. The simulated results show that the mixer...
This paper describes 3.3 V silicon down conversion mixer with a current bleeding Gilbert multiplier and also compares the conventional current bleeding Gilbert mixer with an improved current bleeding circuit, detail analysis are given about the two circuits, using 0.35 um process. With a 1.675 GHz local oscillator (LO) and a 1.575 GHz RF input. The results show that the gain and IIP2 of the improved...
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