Low-noise low-power 0.35.MU.m SiGe amplifiers for 3.1-10.6GHz UWB radio receivers

Abstract

This paper presents the design and performance analysis of low-noise and low-power 0.35 µm SiGe UWB amplifiers for 3.1-10.6 GHz radio receivers, which have been approved by the US Federal Communications Commission on Feb. 14, 2002. Particularly, commongate amplifiers show good characteristics that are controllable with a single current source. These amplifiers give typical gain of 10.2 dB, which is flat to within ±0.3 dB variation over 3.1-10.6 GHz. The noise figure achieved is about 5.1 dB and power dissipation is 5.6 mW under a power supply of ±1.5 V. The results stand high when compared to recently published figures.

A Wide-band noise-cancelling CMOS LNA based on Current Conveyors

“…The performance of the proposed LN A and comparison with the previous designs and existing LNAs based on CC [9] or CG with noise cancelling [12] are summarised in Table 1. As shown in the table, the proposed LNA provides a good gain similar to the basic CC amplifier of Fig.…”

“…As shown in the table, the proposed LNA provides a good gain similar to the basic CC amplifier of Fig. 2 or [9], with a low NF comparable to the CG with noise cancelling of Fig. 3 or [12].…”

“…Another topology that is being used to design wideband LNAs is based on the use of current conveyors (CC) [7][8] [9]. Although they have a number of advantages such as good input matching, high linearity and low power consumption, the achieved NF is relatively high.…”

Miniature Wide-Band Noise-Canceling CMOS LNA

“…Other alternatives, such as distributed amplifiers (DAs) [ 3 ] or cascode amplifiers with LC broadband input-matching networks [ 4 , 5 , 6 ], provide good impedance matching and high gain in a larger frequency range, but they need several inductors. Another topology used to design broadband LNAs is based on the use of current conveyors (CC) [ 7 , 8 , 9 ]. Although they have many advantages, such as good input matching, high linearity, and low power consumption, they suffer from the drawback of having a relatively high NF.…”