Title :
Broadband Low Noise Amplifier with High Linearity for Software-Defined Radios
Author :
Kawashima, Munenari ; Yamaguchi, Yo ; Nishikawa, Kenjiro ; Uehara, Kazuhiro
Author_Institution :
NTT Corp., Yokosuka
Abstract :
We propose a broadband low noise amplifier with high linearity performance. The amplifier achieves broadband, low noise performance and high linearity using a bias circuit with high impedance. The bias circuit consists of an inductor, a resistor, and a current source. The circuit obtains high impedance using a high resistive component. From 0.8 to 5 GHz, the low noise amplifier shows an S21 of 20plusmn1 dB and an Sll of less than -9 dB. The noise figure is 1.5-2.7 dB for frequencies from 0.5 to 5 GHz. The output 1-dB compression point at 2 GHz is +6.3 dBm.
Keywords :
software radio; wideband amplifiers; bias circuit; broadband low noise amplifier; software-defined radios; Broadband amplifiers; Circuit noise; Equivalent circuits; Filters; Impedance; Linearity; Low-noise amplifiers; Noise figure; Radio frequency; Radiofrequency amplifiers;
Conference_Titel :
Wireless Technologies, 2007 European Conference on
Conference_Location :
Munich
Print_ISBN :
978-2-87487-003-3
DOI :
10.1109/ECWT.2007.4404012
