Auto Calibration Method for the Front-end Electronics in Digital Hadron Calorimeter*

Charge-Based Capacitance Measurement (CBCM) technique is a simple but effective technique for measuring capacitance values down to the attofarad level. However, when adopted for fully on-chip implementation, this technique suffers output offset caused by mismatches and process variations. This paper introduces a novel method that compensates the offset of a fully integrated differential CBCM electronic front-end. After a detailed theoretical analysis of the differential CBCM topology, we present and discuss a modified architecture that compensates mismatches and increases robustness against mismatches and process variations. The proposed circuit has been simulated using a standard 130-nm technology and shows a sensitivity of 1.3 mV/aF and a 20× reduction of the standard deviation of the differential output voltage as compared to the traditional solution.

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Progress on the Upgrade of the CMS Hadron Calorimeter Front-End Electronics

Physics Procedia ◽

10.1016/j.phpro.2012.03.708 ◽

2012 ◽

Vol 37 ◽

pp. 190-197

Author(s):

Jake Anderson ◽

Jim Freeman ◽

Juliana Whitmore

Keyword(s):

Hadron Calorimeter ◽

Front End

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CMS Hadron Calorimeter front-end upgrade for SLHC Phase I

Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment ◽

10.1016/j.nima.2009.08.088 ◽

2010 ◽

Vol 617 (1-3) ◽

pp. 372-374

Author(s):

Juliana Whitmore

Keyword(s):

Phase I ◽

Hadron Calorimeter ◽

Front End

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Front end readout electronics for the CMS Hadron Calorimeter

2002 IEEE Nuclear Science Symposium Conference Record ◽

10.1109/nssmic.2002.1239297 ◽

2003 ◽

Cited By ~ 5

Author(s):

T.M. Shaw ◽

A. Baumbaugh ◽

A. Boubekeur ◽

J.E. Elias ◽

J. Hoff ◽

...

Keyword(s):

Hadron Calorimeter ◽

Readout Electronics ◽

Front End

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Research on the phase-frequency relationship of the field effect amplifier front-end of shipborne USB system

MATEC Web of Conferences ◽

10.1051/matecconf/202235501014 ◽

2022 ◽

Vol 355 ◽

pp. 01014

Author(s):

Fuan Sun ◽

Zheng Liu ◽

Huifeng Liu

Keyword(s):

Field Effect ◽

Simulation Analysis ◽

Calibration Method ◽

Calibration Data ◽

Object A ◽

Front End ◽

Fitting Algorithm ◽

Phase Calibration ◽

Frequency Relationship ◽

Relationship Of

Normally, most researches on phase calibration of shipborne USB system focus on the means of phase calibration. This article starts with the research on the channel of the system. The composition of the channel is introduced, and the characteristics of the channel is analyzed. Taking the channel of the field effect amplifier front-end as the research object, a mathematical fitting algorithm is used to derive the functional relationship between the phase of the field effect amplifier front-end and the working frequency. The actual calibration data is used for simulation analysis to obtain the fitting order of the function. Combining the phase-frequency relationship of the field effect amplifier front-end and the microwave self-checking phase correction of the field effect amplifier back-end, a new phase calibration method is proposed.

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Verification of Antenna Sensor with Commercial Handsets By Applying Radiative Calibration Method

Journal of Electronics and Sensors ◽

10.31829/2689-6958/jes2019-2(1)-106 ◽

2019 ◽

pp. 1-6

Keyword(s):

Reflection Coefficient ◽

Calibration Method ◽

Test Results ◽

Excellent Performance ◽

Proximity Sensor ◽

Front End ◽

Rf Front End

This paper describes an antenna proximity sensor for mobile and applications based on the measured reflection coefficient using a bidirectional coupler. A bidirectional coupler which uses forward and reverse parameters is located between radiated antenna and RFFE (RF Front-End). The measured reflection coefficient proved high chances to act as an antenna sensor. The proposed antenna proximity sensor showed excellent performance and some of the test results with Samsung smartphone are attached to prove it.

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