An Analytical Model of Conversion Gain for Submicron Active Mixers with LO Offsets

Guo, Benqing; An, Shiquan

doi:10.1515/freq-2012-0703

Cited by 9 publications

(1 citation statement)

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“…But wideband off-chip passive baluns typically have high loss which degrades the overall receivers' NF. In order to drive following differential mixers and receive single-ended signal from antennas in most cases [7], a balun LNA combining the active balun and the LNA into a single circuit, becomes a more attractive option. As a result, it makes the CG-CS LNA with inherit balun function highly desirable, where wideband input matching, good voltage gain, and possibly high linearity can be achieved simultaneously [4].…”

Section: Introductionmentioning

confidence: 99%

A Wideband Noise-canceling CMOS LNA Using Cross-coupled Feedback and Bulk Effect

Guo

Yang²,

2014

Frequenz

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An improved wideband common-gate (CG) and common-source (CS) CMOS LNA with noise cancellation is proposed. The cross-coupled feedback between the CG input transistor and the cascode transistor of CS input stage is used to increase the input transconductance of the LNA. And the bulk effect of CS input transistors is utilized to enhance g m -boosting coefficient. Thus, comparable gain and noise are achieved by reduced bias currents of the LNA while the resulted additional NF degradation is negligible. Fabricated in a 0.13 μm RF CMOS process, the LNA achieves a flat voltage gain of 18 dB, an NF of 2.7~3.2 dB, and an IIP3 of -4.5~-7.4 dBm over a 3 dB bandwidth of 0.1~4.4 GHz. It consumes only 4.1 mA from a 1 V supply and occupies an area of 520 × 490 um 2 . In contrast to those of reported wideband LNAs, the proposed LNA has the merit of lower power consumption and lower supply voltage.

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Section: Introductionmentioning

confidence: 99%