Title :
Low-noise pHEMT amplifier operating at extra-low supply voltage and power
Author :
Korolev, A.M. ; Shulga, V.M.
Author_Institution :
Inst. of Radio Astron., NAS, Kharkov, Ukraine
Abstract :
In this paper, a low-noise pHEMT amplifier with an extra-low supply (0.25 V, 2 mA) is presented. The two-stage amplifier, based on low-cost commercially available components, has a noise figure of about 1 dB and gain of 20 ± 1 dB over the 1.5 to 2.5 GHz. The input/output return loss do not exceed -5/- 8 dB, thermal gain variation is of 0.05 dB/°C. Via comparison with state of-the-art low-power low-noise amplifiers, it is confirmed that pHEMT has a grate potential as active element for extra-low DC-power-consumption microwave amplifiers.
Keywords :
HEMT circuits; UHF amplifiers; low noise amplifiers; low-power electronics; microwave amplifiers; 0.25 V; 1.5 to 2.5 GHz; 2 mA; extra-low supply voltage; input return loss; low DC power consumption; low-noise pHEMT amplifier; low-power amplifiers; microwave amplifier; output return loss; thermal gain variation; two-stage amplifier; Low-noise amplifiers; PHEMTs; Power supplies; Voltage; Low power; Low-noise; Microwave amplifier; pHEMT;
Conference_Titel :
Microwave Conference Proceedings, 2005. APMC 2005. Asia-Pacific Conference Proceedings
Print_ISBN :
0-7803-9433-X
DOI :
10.1109/APMC.2005.1606467
