Integrated Filtering Class-F Power Amplifier Based on Microstrip Multimode Resonator

Li-Heng Zhou; Xin Yu Zhou; Wing Shing Chan; Jing Zhou Pang; Derek Ho

doi:10.1109/IMS30576.2020.9223987

Integrated Filtering Class-F Power Amplifier Based on Microstrip Multimode Resonator

Li-Heng Zhou, Xin Yu Zhou, Wing Shing Chan, Jing Zhou Pang, Derek Ho^*

^*Corresponding author for this work

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

15 Citations (Scopus)

Abstract

Filtering power amplifiers (PAs) combine two functions into one circuit and 2-order cascaded structure with two transmission poles (TPs) is the most common form. Bandwidth can extend and minimize in-band ripple with multiple TPs. However, more resonators are required for traditional topologies, resulting in large size with high loss. A microstrip filtering Class-F is proposed based on the couple-line multimode impedance transformer (IT) in this paper. Four TPs are created by using only a single resonator. Lengths of the drain bias stub and coupled feed line are carefully chosen to meet the requirement for Class-F operation. The fabricated multimode filtering Class-F PAs is measured at 3.6 GHz for 5G applications. Maximum gain at saturation is 12 dB with output power P_out>38.5 dBm. Maximum power added efficiency (PAE) is 63%, while the effective bandwidth is 400 MHz under the condition of PAEs > 50%.

Original language	English
Title of host publication	Proceedings of the 2020 IEEE/MTT-S International Microwave Symposium
Publisher	IEEE
Pages	119-122
ISBN (Electronic)	978-1-7281-6815-9
DOIs	https://doi.org/10.1109/IMS30576.2020.9223987
Publication status	Published - Aug 2020
Event	2020 IEEE/MTT-S International Microwave Symposium - Virtual Event, Los Angeles, CA, United States Duration: 4 Aug 2020 → 6 Aug 2020 https://ieee-region6.org/2020/ieee-international-microwave-symposium-ims2020/

Publication series

Name	IEEE MTT-S International Microwave Symposium Digest
Volume	2020-August
ISSN (Print)	0149-645X

Conference

Conference	2020 IEEE/MTT-S International Microwave Symposium
Place	United States
City	Los Angeles, CA
Period	4/08/20 → 6/08/20
Internet address	https://ieee-region6.org/2020/ieee-international-microwave-symposium-ims2020/

Research Keywords

bandwidth
Class-F power amplifier
impedance transformer
multimode

Access Output

10.1109/IMS30576.2020.9223987

Other Access Options

Check CityUHK Library

Permanent Link

Right click to copy link

Cite this

Zhou, L.-H., Zhou, X. Y., Chan, W. S., Pang, J. Z., & Ho, D. (2020). Integrated Filtering Class-F Power Amplifier Based on Microstrip Multimode Resonator. In Proceedings of the 2020 IEEE/MTT-S International Microwave Symposium (pp. 119-122). Article 9223987 (IEEE MTT-S International Microwave Symposium Digest; Vol. 2020-August). IEEE. https://doi.org/10.1109/IMS30576.2020.9223987

@inproceedings{d6369a8028d2490893ba1a213c36c1c2,

title = "Integrated Filtering Class-F Power Amplifier Based on Microstrip Multimode Resonator",

abstract = "Filtering power amplifiers (PAs) combine two functions into one circuit and 2-order cascaded structure with two transmission poles (TPs) is the most common form. Bandwidth can extend and minimize in-band ripple with multiple TPs. However, more resonators are required for traditional topologies, resulting in large size with high loss. A microstrip filtering Class-F is proposed based on the couple-line multimode impedance transformer (IT) in this paper. Four TPs are created by using only a single resonator. Lengths of the drain bias stub and coupled feed line are carefully chosen to meet the requirement for Class-F operation. The fabricated multimode filtering Class-F PAs is measured at 3.6 GHz for 5G applications. Maximum gain at saturation is 12 dB with output power Pout>38.5 dBm. Maximum power added efficiency (PAE) is 63%, while the effective bandwidth is 400 MHz under the condition of PAEs > 50%.",

keywords = "bandwidth, Class-F power amplifier, impedance transformer, multimode",

author = "Li-Heng Zhou and Zhou, {Xin Yu} and Chan, {Wing Shing} and Pang, {Jing Zhou} and Derek Ho",

year = "2020",

month = aug,

doi = "10.1109/IMS30576.2020.9223987",

language = "English",

series = "IEEE MTT-S International Microwave Symposium Digest",

publisher = "IEEE",

pages = "119--122",

booktitle = "Proceedings of the 2020 IEEE/MTT-S International Microwave Symposium",

address = "United States",

note = "2020 IEEE/MTT-S International Microwave Symposium ; Conference date: 04-08-2020 Through 06-08-2020",

url = "https://ieee-region6.org/2020/ieee-international-microwave-symposium-ims2020/",

}

Zhou, L-H , Zhou, XY , Chan, WS, Pang, JZ & Ho, D 2020, Integrated Filtering Class-F Power Amplifier Based on Microstrip Multimode Resonator. in Proceedings of the 2020 IEEE/MTT-S International Microwave Symposium., 9223987, IEEE MTT-S International Microwave Symposium Digest, vol. 2020-August, IEEE, pp. 119-122, 2020 IEEE/MTT-S International Microwave Symposium, Los Angeles, CA, United States, 4/08/20. https://doi.org/10.1109/IMS30576.2020.9223987

Integrated Filtering Class-F Power Amplifier Based on Microstrip Multimode Resonator. / Zhou, Li-Heng ; Zhou, Xin Yu ; Chan, Wing Shing et al.
Proceedings of the 2020 IEEE/MTT-S International Microwave Symposium. IEEE, 2020. p. 119-122 9223987 (IEEE MTT-S International Microwave Symposium Digest; Vol. 2020-August).

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

TY - GEN

T1 - Integrated Filtering Class-F Power Amplifier Based on Microstrip Multimode Resonator

AU - Zhou, Li-Heng

AU - Zhou, Xin Yu

AU - Chan, Wing Shing

AU - Pang, Jing Zhou

AU - Ho, Derek

PY - 2020/8

Y1 - 2020/8

N2 - Filtering power amplifiers (PAs) combine two functions into one circuit and 2-order cascaded structure with two transmission poles (TPs) is the most common form. Bandwidth can extend and minimize in-band ripple with multiple TPs. However, more resonators are required for traditional topologies, resulting in large size with high loss. A microstrip filtering Class-F is proposed based on the couple-line multimode impedance transformer (IT) in this paper. Four TPs are created by using only a single resonator. Lengths of the drain bias stub and coupled feed line are carefully chosen to meet the requirement for Class-F operation. The fabricated multimode filtering Class-F PAs is measured at 3.6 GHz for 5G applications. Maximum gain at saturation is 12 dB with output power Pout>38.5 dBm. Maximum power added efficiency (PAE) is 63%, while the effective bandwidth is 400 MHz under the condition of PAEs > 50%.

AB - Filtering power amplifiers (PAs) combine two functions into one circuit and 2-order cascaded structure with two transmission poles (TPs) is the most common form. Bandwidth can extend and minimize in-band ripple with multiple TPs. However, more resonators are required for traditional topologies, resulting in large size with high loss. A microstrip filtering Class-F is proposed based on the couple-line multimode impedance transformer (IT) in this paper. Four TPs are created by using only a single resonator. Lengths of the drain bias stub and coupled feed line are carefully chosen to meet the requirement for Class-F operation. The fabricated multimode filtering Class-F PAs is measured at 3.6 GHz for 5G applications. Maximum gain at saturation is 12 dB with output power Pout>38.5 dBm. Maximum power added efficiency (PAE) is 63%, while the effective bandwidth is 400 MHz under the condition of PAEs > 50%.

KW - bandwidth

KW - Class-F power amplifier

KW - impedance transformer

KW - multimode

UR - http://www.scopus.com/inward/record.url?scp=85094200347&partnerID=8YFLogxK

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85094200347&origin=recordpage

U2 - 10.1109/IMS30576.2020.9223987

DO - 10.1109/IMS30576.2020.9223987

M3 - RGC 32 - Refereed conference paper (with host publication)

T3 - IEEE MTT-S International Microwave Symposium Digest

SP - 119

EP - 122

BT - Proceedings of the 2020 IEEE/MTT-S International Microwave Symposium

PB - IEEE

T2 - 2020 IEEE/MTT-S International Microwave Symposium

Y2 - 4 August 2020 through 6 August 2020

ER -

Integrated Filtering Class-F Power Amplifier Based on Microstrip Multimode Resonator

Abstract

Publication series

Conference

Research Keywords

Access Output

Other Access Options

Permanent Link

Other Files and Links

Fingerprint

Cite this