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Industry News / Test and Measurement

Specification and Measurement of Local Oscillator Noise in Integrated Circuit Base Station Mixers

Residual phase noise from local oscillators can be degraded by additive noise of on-chip local oscillator (LO) drivers/buffers in integrated circuit mixers. Reciprocal mixing of strong RF signals with the LO noise degrades the receiver sensitivity. Spe...

April 1, 2003
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Cellular base station receivers work in the presence of high level blockers/interferers while being required to sense weak signals of interest at the antenna. The interferers are usually rejected by filters but only at an intermediate frequency (IF) after the first down conversion. The LNA and mixer preceding the...
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