A BiCMOS single ended multiband RF-amplifier and mixer with DC-offset and second order distortion suppression
Författare
Summary, in English
Direct conversion receivers are widely used for full duplex mobile radio communication systems. This paper describes a novel SAW-less single-ended RF amplifier connected to a single-ended mixer with a feedback loop that suppresses the second-order distortion from TX cross modulation of the LO-leakage as well as DC-offset at the mixer output. In Monte Carlo simulations the design achieves +47 dBm minimum IIP2 with 32 dB conversion voltage gain. The advantage with the proposed architecture is that it is fully single-ended. Especially in multiband integrated radios this is highly desirable since the pin-count for the LNAs is reduced by half. The PCB routing of the RF input signal is simplified. The design requires two off-chip filter capacitors of non critical value intended to be placed on the laminate inside the package.
Avdelning/ar
Publiceringsår
2011-09-01
Språk
Engelska
Sidor
269-283
Publikation/Tidskrift/Serie
Analog Integrated Circuits and Signal Processing
Volym
68
Issue
3
Dokumenttyp
Artikel i tidskrift
Förlag
Springer
Ämne
- Electrical Engineering, Electronic Engineering, Information Engineering
Nyckelord
- BiCMOS, multiband, mixer, second order distortion
Status
Published
ISBN/ISSN/Övrigt
- ISSN: 0925-1030