Feedforward amplifier using equal group-delay signal canceller

Yong Chae Jeong; Dal Ahn; Chul Dong Kim; Ik Soo Chang

doi:10.1109/MWSYM.2006.249604

Feedforward amplifier using equal group-delay signal canceller

Yong Chae Jeong^*
, Dal Ahn
, Chul Dong Kim
, Ik Soo Chang

^*Corresponding author for this work

Division of Electronic Engineering

Soonchunhyang University
Sewon Teletech, Inc.
Sogang University

Research output: Contribution to journal › Conference article › peer-review

12 Scopus citations

Abstract

In this paper, a new signal canceller that can matches an out-of-phase and a group delay of two path signals simultaneously is proposed. The simultaneous matching of the out-of-phase and the group delay time between two paths can makes a broadband signal cancellation possible. A feedforward linearizing power amplifier that adopts the proposed signal cancellers is fabricated on EMT-2000 base-station transmitting band. The main signal cancellation (or the 1 ^st) loop of the fabricated feedforward amplifier cancel input signal more than 26.3d B and the intermodulation distortion (IMD) signal cancellation (or the 2^nd) loop cancel EMD signal more than 15.2dB for 200MHz bandwidth. With the two-tone signals amplification process, the C/I ratio of the amplifier is improved 20.8dB, where the two tones are 2115MHz and 2165MHz, respectively.

Original language	English
Article number	4015226
Pages (from-to)	1530-1533
Number of pages	4
Journal	IEEE MTT-S International Microwave Symposium Digest
DOIs	https://doi.org/10.1109/MWSYM.2006.249604
State	Published - 2006
Event	2006 IEEE MTT-S International Microwave Symposium Digest - San Francisco, CA, United States Duration: 2006.06.11 → 2006.06.16

Quacquarelli Symonds(QS) Subject Topics

Engineering - Electrical & Electronic
Engineering - Petroleum
Physics & Astronomy

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10.1109/MWSYM.2006.249604

Cite this

@article{3c3c13bb2a3e49c1828e1811e5766ff9,

title = "Feedforward amplifier using equal group-delay signal canceller",

abstract = "In this paper, a new signal canceller that can matches an out-of-phase and a group delay of two path signals simultaneously is proposed. The simultaneous matching of the out-of-phase and the group delay time between two paths can makes a broadband signal cancellation possible. A feedforward linearizing power amplifier that adopts the proposed signal cancellers is fabricated on EMT-2000 base-station transmitting band. The main signal cancellation (or the 1 st) loop of the fabricated feedforward amplifier cancel input signal more than 26.3d B and the intermodulation distortion (IMD) signal cancellation (or the 2nd) loop cancel EMD signal more than 15.2dB for 200MHz bandwidth. With the two-tone signals amplification process, the C/I ratio of the amplifier is improved 20.8dB, where the two tones are 2115MHz and 2165MHz, respectively.",

author = "Jeong, \{Yong Chae\} and Dal Ahn and Kim, \{Chul Dong\} and Chang, \{Ik Soo\}",

year = "2006",

doi = "10.1109/MWSYM.2006.249604",

language = "English",

pages = "1530--1533",

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

issn = "0149-645X",

note = "2006 IEEE MTT-S International Microwave Symposium Digest ; Conference date: 11-06-2006 Through 16-06-2006",

}

TY - JOUR

T1 - Feedforward amplifier using equal group-delay signal canceller

AU - Jeong, Yong Chae

AU - Ahn, Dal

AU - Kim, Chul Dong

AU - Chang, Ik Soo

PY - 2006

Y1 - 2006

N2 - In this paper, a new signal canceller that can matches an out-of-phase and a group delay of two path signals simultaneously is proposed. The simultaneous matching of the out-of-phase and the group delay time between two paths can makes a broadband signal cancellation possible. A feedforward linearizing power amplifier that adopts the proposed signal cancellers is fabricated on EMT-2000 base-station transmitting band. The main signal cancellation (or the 1 st) loop of the fabricated feedforward amplifier cancel input signal more than 26.3d B and the intermodulation distortion (IMD) signal cancellation (or the 2nd) loop cancel EMD signal more than 15.2dB for 200MHz bandwidth. With the two-tone signals amplification process, the C/I ratio of the amplifier is improved 20.8dB, where the two tones are 2115MHz and 2165MHz, respectively.

AB - In this paper, a new signal canceller that can matches an out-of-phase and a group delay of two path signals simultaneously is proposed. The simultaneous matching of the out-of-phase and the group delay time between two paths can makes a broadband signal cancellation possible. A feedforward linearizing power amplifier that adopts the proposed signal cancellers is fabricated on EMT-2000 base-station transmitting band. The main signal cancellation (or the 1 st) loop of the fabricated feedforward amplifier cancel input signal more than 26.3d B and the intermodulation distortion (IMD) signal cancellation (or the 2nd) loop cancel EMD signal more than 15.2dB for 200MHz bandwidth. With the two-tone signals amplification process, the C/I ratio of the amplifier is improved 20.8dB, where the two tones are 2115MHz and 2165MHz, respectively.

UR - https://www.scopus.com/pages/publications/34250321370

U2 - 10.1109/MWSYM.2006.249604

DO - 10.1109/MWSYM.2006.249604

M3 - Conference article

AN - SCOPUS:34250321370

SN - 0149-645X

SP - 1530

EP - 1533

JO - IEEE MTT-S International Microwave Symposium Digest

JF - IEEE MTT-S International Microwave Symposium Digest

M1 - 4015226

T2 - 2006 IEEE MTT-S International Microwave Symposium Digest

Y2 - 11 June 2006 through 16 June 2006

ER -

Feedforward amplifier using equal group-delay signal canceller

Abstract

Quacquarelli Symonds(QS) Subject Topics

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