Title :
Multi-band combined LNA and mixer
Author :
Martins, Miguel A. ; Fernandes, Jorge R. ; Silva, Manuel M.
Author_Institution :
Inst. Super. Tecnico/INESC-ID, Lisbon
Abstract :
In this paper we investigate the performance of the multi-band low noise amplifier (LNA) based on the concept of using multiple cascode transistors for band selection; thus, avoiding switches in the signal path. We also show that this circuit can perform mixing of two signal bands with two different local oscillator frequencies, which provides great flexibility in the design of dual-band RF front-ends. The operation of both as LNA and as combined LNA/mixer is demonstrated by simulation.
Keywords :
low noise amplifiers; mixers (circuits); band selection; dual-band RF front-ends; multiband combined LNA-mixer; multiband low noise amplifier; multiple cascode transistors; Circuit noise; Dual band; Flexible printed circuits; Frequency; Local oscillators; Low-noise amplifiers; RF signals; Radiofrequency amplifiers; Signal design; Switches;
Conference_Titel :
Circuits and Systems, 2008. ISCAS 2008. IEEE International Symposium on
Conference_Location :
Seattle, WA
Print_ISBN :
978-1-4244-1683-7
Electronic_ISBN :
978-1-4244-1684-4
DOI :
10.1109/ISCAS.2008.4541569
