Broadband Balun-LNA Employing Local Feedback g m -Boosting Technique and Balanced Loads for Low-Power Low-Voltage Applications
In: IEEE Transactions on Circuits and Systems I: Regular Papers, Jg. 67 (2020-12-01), S. 4631-4640
Online
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Zugriff:
A new low-voltage and low-power noise-cancelling method that employs the local feedback $g_{m}$ -boosting and balanced loads is proposed by developing a design for a low-noise and low-power balun-low-noise amplifier (LNA) for low-power broadband applications. A common-gate (CG) – common-source (CS) balun-LNA with a modified current-bleeding (CBLD) technique has low noise performance and differential balanced output but consumes more power. Because local feedback boosts the overall $g_{m}$ of the CG stage using the amount of loop gain, the current consumption and supply voltage requirements can be mitigated. In addition, the cross-coupled cascode stage acts as a differential current balancer to improve the gain and phase mismatches at the differential output. Implemented in a 65-nm CMOS technology, the balun-LNA achieves a noise figure of 2.3 - 3 dB, a maximum voltage gain of 27.5 dB and a $S_{11}$ of less −10 dB over the frequency range of 50 MHz to 1.3 GHz. The measured OIP3 and OIP2 are 25.3 dBm and 45.3 dBm, respectively. It consumes 5.7 mA from a nominal supply voltage of 1 V while the active die area is 0.046 mm2.
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Broadband Balun-LNA Employing Local Feedback g m -Boosting Technique and Balanced Loads for Low-Power Low-Voltage Applications
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Autor/in / Beteiligte Person: | Kim, Sinyoung ; Kwon, Kuduck |
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Zeitschrift: | IEEE Transactions on Circuits and Systems I: Regular Papers, Jg. 67 (2020-12-01), S. 4631-4640 |
Veröffentlichung: | Institute of Electrical and Electronics Engineers (IEEE), 2020 |
Medientyp: | unknown |
ISSN: | 1558-0806 (print) ; 1549-8328 (print) |
DOI: | 10.1109/tcsi.2020.3014194 |
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