Low-noise amplifiers for WCDMA base-station receivers |
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| Authors: | Tero Tikka Jussi Ryynänen Kari Halonen |
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| Affiliation: | 1. Electronic Circuit Design Laboratory, Helsinki University of Technology, P.O. Box 3000, Helsinki, 02015 TKK, Finland
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| Abstract: | This paper focuses on the design and measurements of low-noise amplifiers (LNA) targeted for WCDMA base-station applications. In addition, various gain control techniques and the accuracy in noise measurements have been analyzed. Two different LNA designs are presented. Both LNAs can be operated in two gain modes, which are optimized for different base-station configurations. Both designs are implemented using the same 0.25-μm SiGe BiCMOS process, and both designs achieve the NF of 1 dB and IIP3 of ?5 dBm in high gain mode. |
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