A Wideband Multilevel Reconfigurable Class E/F23Power Amplifier With a Band-Selecting Tracking Reactance Compensation Automatic Calibration Algorithm

Reza E. Rad; Yasser M. Qaragoez; Sungjin Kim; Arash Hejazi; Dong Gyu Kim; Danial Khan; Imran Ali; Behnam S. Rikan; Sang Sun Yoo; Younggun Pu; Keum Cheol Hwang; Youngoo Yang; Kang Yoon Lee

doi:10.1109/ACCESS.2022.3175885

A Wideband Multilevel Reconfigurable Class E/F23Power Amplifier With a Band-Selecting Tracking Reactance Compensation Automatic Calibration Algorithm

Reza E. Rad, Yasser M. Qaragoez, Sungjin Kim, Arash Hejazi, Dong Gyu Kim, Danial Khan, Imran Ali, Behnam S. Rikan, Sang Sun Yoo, Younggun Pu, Keum Cheol Hwang, Youngoo Yang, Kang Yoon Lee

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

This paper presents a wide-band multi-level switched mode class-E/F23 Power Amplifier (PA) with a reconfigurable power stage core transistor and a load with reconfigurable reactance compensation part. An Automatic Calibration Scheme (ACS) is proposed to perform the core and load reconfiguration based on a proposed algorithm. The PA is formed by a class-D driver amplifier, the switched mode cascaded reconfigurable power stage, the reconfigurable class-E/F23 load, the ACS and its algorithm, and the matching network at the end of the load before the antenna. The proposed PA is implemented using a 130 nm CMOS technology. The wideband PA operates in the frequency range from 470 MHz to 690 MHz for a TV White Space (TVWS) application with 220 MHz bandwidth. Even though reaching a high maximum Power Added Efficiency (PAEmax) for the design with low output powers is challenging a PAEmax of 32% for a 10 dBm output power level from a low supply voltage of 2.2 V. The proposed ACS provides an output power with a flatness around 0.6 dB which shows 57% improvement in compare with the structure without the ACS. The PA achieved a selectable multi-level output power from 10 dBm to 14 dBm over the 220 MHz bandwidth.

Original language	English (US)
Pages (from-to)	54214-54220
Number of pages	7
Journal	IEEE Access
Volume	10
DOIs	https://doi.org/10.1109/ACCESS.2022.3175885
State	Published - Jan 1 2022
Externally published	Yes

ASJC Scopus subject areas

General Engineering
General Computer Science
General Materials Science

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10.1109/ACCESS.2022.3175885

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Rad, R. E., Qaragoez, Y. M., Kim, S., Hejazi, A., Kim, D. G., Khan, D., Ali, I., Rikan, B. S., Yoo, S. S., Pu, Y., Hwang, K. C., Yang, Y., & Lee, K. Y. (2022). A Wideband Multilevel Reconfigurable Class E/F23Power Amplifier With a Band-Selecting Tracking Reactance Compensation Automatic Calibration Algorithm. IEEE Access, 10, 54214-54220. https://doi.org/10.1109/ACCESS.2022.3175885

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title = "A Wideband Multilevel Reconfigurable Class E/F23Power Amplifier With a Band-Selecting Tracking Reactance Compensation Automatic Calibration Algorithm",

abstract = "This paper presents a wide-band multi-level switched mode class-E/F23 Power Amplifier (PA) with a reconfigurable power stage core transistor and a load with reconfigurable reactance compensation part. An Automatic Calibration Scheme (ACS) is proposed to perform the core and load reconfiguration based on a proposed algorithm. The PA is formed by a class-D driver amplifier, the switched mode cascaded reconfigurable power stage, the reconfigurable class-E/F23 load, the ACS and its algorithm, and the matching network at the end of the load before the antenna. The proposed PA is implemented using a 130 nm CMOS technology. The wideband PA operates in the frequency range from 470 MHz to 690 MHz for a TV White Space (TVWS) application with 220 MHz bandwidth. Even though reaching a high maximum Power Added Efficiency (PAEmax) for the design with low output powers is challenging a PAEmax of 32% for a 10 dBm output power level from a low supply voltage of 2.2 V. The proposed ACS provides an output power with a flatness around 0.6 dB which shows 57% improvement in compare with the structure without the ACS. The PA achieved a selectable multi-level output power from 10 dBm to 14 dBm over the 220 MHz bandwidth.",

author = "Rad, {Reza E.} and Qaragoez, {Yasser M.} and Sungjin Kim and Arash Hejazi and Kim, {Dong Gyu} and Danial Khan and Imran Ali and Rikan, {Behnam S.} and Yoo, {Sang Sun} and Younggun Pu and Hwang, {Keum Cheol} and Youngoo Yang and Lee, {Kang Yoon}",

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AU - Rad, Reza E.

AU - Qaragoez, Yasser M.

AU - Kim, Sungjin

AU - Hejazi, Arash

AU - Kim, Dong Gyu

AU - Khan, Danial

AU - Ali, Imran

AU - Rikan, Behnam S.

AU - Yoo, Sang Sun

AU - Pu, Younggun

AU - Hwang, Keum Cheol

AU - Yang, Youngoo

AU - Lee, Kang Yoon

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N2 - This paper presents a wide-band multi-level switched mode class-E/F23 Power Amplifier (PA) with a reconfigurable power stage core transistor and a load with reconfigurable reactance compensation part. An Automatic Calibration Scheme (ACS) is proposed to perform the core and load reconfiguration based on a proposed algorithm. The PA is formed by a class-D driver amplifier, the switched mode cascaded reconfigurable power stage, the reconfigurable class-E/F23 load, the ACS and its algorithm, and the matching network at the end of the load before the antenna. The proposed PA is implemented using a 130 nm CMOS technology. The wideband PA operates in the frequency range from 470 MHz to 690 MHz for a TV White Space (TVWS) application with 220 MHz bandwidth. Even though reaching a high maximum Power Added Efficiency (PAEmax) for the design with low output powers is challenging a PAEmax of 32% for a 10 dBm output power level from a low supply voltage of 2.2 V. The proposed ACS provides an output power with a flatness around 0.6 dB which shows 57% improvement in compare with the structure without the ACS. The PA achieved a selectable multi-level output power from 10 dBm to 14 dBm over the 220 MHz bandwidth.

AB - This paper presents a wide-band multi-level switched mode class-E/F23 Power Amplifier (PA) with a reconfigurable power stage core transistor and a load with reconfigurable reactance compensation part. An Automatic Calibration Scheme (ACS) is proposed to perform the core and load reconfiguration based on a proposed algorithm. The PA is formed by a class-D driver amplifier, the switched mode cascaded reconfigurable power stage, the reconfigurable class-E/F23 load, the ACS and its algorithm, and the matching network at the end of the load before the antenna. The proposed PA is implemented using a 130 nm CMOS technology. The wideband PA operates in the frequency range from 470 MHz to 690 MHz for a TV White Space (TVWS) application with 220 MHz bandwidth. Even though reaching a high maximum Power Added Efficiency (PAEmax) for the design with low output powers is challenging a PAEmax of 32% for a 10 dBm output power level from a low supply voltage of 2.2 V. The proposed ACS provides an output power with a flatness around 0.6 dB which shows 57% improvement in compare with the structure without the ACS. The PA achieved a selectable multi-level output power from 10 dBm to 14 dBm over the 220 MHz bandwidth.

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A Wideband Multilevel Reconfigurable Class E/F23Power Amplifier With a Band-Selecting Tracking Reactance Compensation Automatic Calibration Algorithm

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