Title :
Dual-band low-noise amplifier using Step-Impedance Resonator (SIR) technique for wireless system applications
Author :
Djoumessi, Erick Emmanuel ; Wu, Ke
Author_Institution :
Poly-Grames Res. Center, Ecole Polytech. de Montreal, Montreal, QC, Canada
fDate :
Sept. 29 2009-Oct. 1 2009
Abstract :
A low-cost dual-band low-noise amplifier (LNA) is proposed and demonstrated for WLAN IEEE802.11b/g/a standards. A sufficient dual-band gain is achieved on the basis of cascaded two single-stage amplifiers. The LNA is realized in our standard Print Circuit Board (PCB) surface-mount technology with discrete components. Dual-band operating frequency ranges of the LNA are designed and obtained by using a quarter-wavelength microstrip line Step-Impedance Resonator (λ/4 SIR). The proposed LNA is biased with a supply voltage of 1.5 V. It exhibits 22 and 12 dB gain with noise figure of 1.5 and 1.6 dB at the pre-designated center-operation frequencies of 2.45 and 5.2 GHz, respectively. The LNA presents 7.5 mW (5 mA under 1.5V) power consumption at both frequency bands.
Keywords :
low noise amplifiers; microstrip lines; printed circuits; surface mount technology; telecommunication standards; wireless LAN; PCB; WLAN IEEE802.11b/g/a standards; current 5 mA; frequency 2.45 GHz; frequency 5.2 GHz; gain 12 dB; gain 22 dB; low-cost dual-band low-noise amplifier (LNA); noise figure 1.5 dB; noise figure 1.6 dB; power 7.5 mW; power consumption; print circuit board; quarter-wavelength microstrip line; single-stage amplifiers; step-impedance resonator technique; surface-mount technology; voltage 1.5 V; wireless LAN; wireless system; Dual band; Frequency; Gain; Low-noise amplifiers; Microstrip resonators; Noise figure; Printed circuits; Surface-mount technology; Voltage; Wireless LAN; Low-noise amplifier (LNA); PCB; dual-band; step-impedance resonator (SIR);
Conference_Titel :
Microwave Conference, 2009. EuMC 2009. European
Conference_Location :
Rome
Print_ISBN :
978-1-4244-4748-0
