Fully integrated 2.2-mW CMOS front end for a 900-MHz wireless receiver

Reverberation canceling wireless aid for hearing impaired

“…The proposed architecture is amenable to CMOS implementation. A CMOS RF receiver at 900 MHz can generally have power consumption as low as 2.2 mW [32]. An estimated total power consumption of the earpiece based on 0.18 lm CMOS is given in Table 1.…”

“…The earpiece power consumption is calculated based on A675 battery [39] and a typical current drain for CMOS receiver [32]. A data transfer rate of 136 kbps from the body unit to the earpiece is estimated.…”

Sub-mA single ended CMOS low noise amplifier with 2.41 dB noise figure

“…According to the normal hearing aid battery capacity [7], the total power consumption of an earpiece, where receiver is the most power hungry block, should be as low as possible, such as less than 3 mW [1]. The recently reported 0.9 GHz CMOS receiver consumes only 2.2 mW, out of which LNA alone consumes 1.44 mW [2]. In the proposed LNA design, the supply voltage is targeted as 1.0 V keeping in view the conventionally used 1.0 V hearing aids batteries, and the power consumption target, though a herculean task, is kept less than 1.0 mW.…”

Analysis and design of common‐gate low‐noise amplifier for wideband applications

“…The input impedance is given by Equation (8). The frequencies where the −10 dB S 11 limit is achieved are…”

“…Common-gate (CG) LNA is a widely used topology in wireless communications [1][2][3][4][5][6][7][8][9][10][11]. The main drawback of the CG LNA is the minimum noise figure (NF), which is typically more than 3 dB.…”