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Temperature Compensated Internal LNA Noise Calibration Source

Shi, Jun and Weinreb, Sander (2021) Temperature Compensated Internal LNA Noise Calibration Source. IEEE Microwave and Wireless Components Letters, 31 (8). pp. 1016-1019. ISSN 1531-1309. doi:10.1109/LMWC.2021.3084061.

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In this letter, a new temperature-compensated internal LNA noise calibration source for system temperature monitoring is presented. It is easily integrated into amplifiers and has a negligible impact on the noise performance. The power level of the proposed calibration source is temperature compensated by a negative temperature coefficient (NTC) thermistor varying the bias voltage of the noise diode. The measured variation of the compensated calibration level is only ±0.5 K for 34 K calibration level at 1.4 GHz in a temperature range from −40°C to +40 °C. This internal noise calibration source is controlled by the detection of a tone signal applied on the RF output cable thus requiring no additional wiring to the amplifier. The designed noise calibration source provides monitoring of system noise temperature without the additional noise and cost of a directional coupler between ambient-temperature LNA and antenna.

Item Type:Article
Related URLs:
URLURL TypeDescription
Shi, Jun0000-0003-1647-7762
Weinreb, Sander0000-0002-9353-6204
Additional Information:© 2021 IEEE. Manuscript received February 11, 2021; revised April 10, 2021 and May 13, 2021; accepted May 23, 2021. Date of publication May 26, 2021; date of current version August 9, 2021. This work was supported by the U.S. National Science Foundation under Grant NSF 1836018.
Funding AgencyGrant Number
Subject Keywords:Calibration, LNA, low noise, noise diode, receiving system, temperature compensation
Issue or Number:8
Record Number:CaltechAUTHORS:20210528-094924361
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Official Citation:J. Shi and S. Weinreb, "Temperature Compensated Internal LNA Noise Calibration Source," in IEEE Microwave and Wireless Components Letters, vol. 31, no. 8, pp. 1016-1019, Aug. 2021, doi: 10.1109/LMWC.2021.3084061
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:109298
Deposited By: George Porter
Deposited On:28 May 2021 20:49
Last Modified:16 Aug 2021 17:38

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