Reverse Intermodulation in Multi-Tone Array Transmitters

Anton N. Atanasov; Mark S. Oude Alink; Frank E. van Vliet

Reverse Intermodulation in Multi-Tone Array Transmitters

Anton N. Atanasov^*, Mark S. Oude Alink, Frank E. van Vliet

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

3 Citations (Scopus)

503 Downloads (Pure)

Abstract

The modern spectral, and thereby linearity, requirements force 5G phased-array transmitter systems to operate at reduced power efficiency, as they can no longer use voluminous filtering. To reduce the linearity requirements of the transmitter, we consider the case of an array consisting of closely spaced radiating elements operating at different frequencies. The coupled tones from one element to another create reverse intermodulation distortion (RIMD). We explain how RIMD is created within a power amplifier (PA), and derive an estimate for the power of the RIMD components. We provide a set of measurements for an X-Band GaAs PA and draw a direct comparison between RIMD and IMD. We show that RIMD has a third-order behaviour up to very high reverse power levels, opening up the perspective for higher output power operation as well as simpler and lower-power predistortion in multi-tone array systems such as 5G and radar

Original language	English
Title of host publication	BCICTS 2020
Publisher	IEEE
Number of pages	4
Publication status	Published - 19 Nov 2020
Event	IEEE BiCMOS and Compound Semiconductor Integrated Circuits and Technology Symposium, BCICTS 2020 - Online Duration: 16 Nov 2020 → 19 Nov 2020

Conference

Conference	IEEE BiCMOS and Compound Semiconductor Integrated Circuits and Technology Symposium, BCICTS 2020
Abbreviated title	BCICTS
Period	16/11/20 → 19/11/20

Keywords

Interleaved arrays
Reverse intermodulation
Power amplifiers
Intermodulation
Nonlinearity
Transmitter

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BCICTS2020_AAtanasovAccepted author version, 543 KB

3 Citations
2 Conference contribution

A Figure of Merit for Simultaneous-Multi-Beam Transmit Antenna Arrays
Atanasov, A. N., Oude Alink, M. S. & van Vliet, F. E., 19 Dec 2022, 2022 IEEE International Symposium on Phased Array Systems & Technology (PAST). IEEE
Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

Open Access
File
4 Downloads (Pure)
The Load-Modulated linearizer: A technique for intermodulation cancellation in PA systems
Atanasov, A. N., Mukhtar Ahmad, W., Oude Alink, M. S. & van Vliet, F. E., 19 Oct 2022, 2022 IEEE BiCMOS and Compound Semiconductor Integrated Circuits and Technology Symposium (BCICTS). Phoenix, Arizona, USA: IEEE, p. 174-177 4 p.
Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

Open Access
File
10 Downloads (Pure)

Cite this

@inproceedings{70d838d3487146c5a96e9b34bbb6b74d,

title = "Reverse Intermodulation in Multi-Tone Array Transmitters",

abstract = "The modern spectral, and thereby linearity, requirements force 5G phased-array transmitter systems to operate at reduced power efficiency, as they can no longer use voluminous filtering. To reduce the linearity requirements of the transmitter, we consider the case of an array consisting of closely spaced radiating elements operating at different frequencies. The coupled tones from one element to another create reverse intermodulation distortion (RIMD). We explain how RIMD is created within a power amplifier (PA), and derive an estimate for the power of the RIMD components. We provide a set of measurements for an X-Band GaAs PA and draw a direct comparison between RIMD and IMD. We show that RIMD has a third-order behaviour up to very high reverse power levels, opening up the perspective for higher output power operation as well as simpler and lower-power predistortion in multi-tone array systems such as 5G and radar ",

keywords = "Interleaved arrays, Reverse intermodulation, Power amplifiers, Intermodulation, Nonlinearity, Transmitter",

author = "Atanasov, {Anton N.} and {Oude Alink}, {Mark S.} and {van Vliet}, {Frank E.}",

year = "2020",

month = nov,

day = "19",

language = "English",

booktitle = "BCICTS 2020",

publisher = "IEEE",

note = "IEEE BiCMOS and Compound Semiconductor Integrated Circuits and Technology Symposium, BCICTS 2020, BCICTS ; Conference date: 16-11-2020 Through 19-11-2020",

}

TY - GEN

T1 - Reverse Intermodulation in Multi-Tone Array Transmitters

AU - Atanasov, Anton N.

AU - Oude Alink, Mark S.

AU - van Vliet, Frank E.

PY - 2020/11/19

Y1 - 2020/11/19

N2 - The modern spectral, and thereby linearity, requirements force 5G phased-array transmitter systems to operate at reduced power efficiency, as they can no longer use voluminous filtering. To reduce the linearity requirements of the transmitter, we consider the case of an array consisting of closely spaced radiating elements operating at different frequencies. The coupled tones from one element to another create reverse intermodulation distortion (RIMD). We explain how RIMD is created within a power amplifier (PA), and derive an estimate for the power of the RIMD components. We provide a set of measurements for an X-Band GaAs PA and draw a direct comparison between RIMD and IMD. We show that RIMD has a third-order behaviour up to very high reverse power levels, opening up the perspective for higher output power operation as well as simpler and lower-power predistortion in multi-tone array systems such as 5G and radar

AB - The modern spectral, and thereby linearity, requirements force 5G phased-array transmitter systems to operate at reduced power efficiency, as they can no longer use voluminous filtering. To reduce the linearity requirements of the transmitter, we consider the case of an array consisting of closely spaced radiating elements operating at different frequencies. The coupled tones from one element to another create reverse intermodulation distortion (RIMD). We explain how RIMD is created within a power amplifier (PA), and derive an estimate for the power of the RIMD components. We provide a set of measurements for an X-Band GaAs PA and draw a direct comparison between RIMD and IMD. We show that RIMD has a third-order behaviour up to very high reverse power levels, opening up the perspective for higher output power operation as well as simpler and lower-power predistortion in multi-tone array systems such as 5G and radar

KW - Interleaved arrays

KW - Reverse intermodulation

KW - Power amplifiers

KW - Intermodulation

KW - Nonlinearity

KW - Transmitter

M3 - Conference contribution

BT - BCICTS 2020

PB - IEEE

T2 - IEEE BiCMOS and Compound Semiconductor Integrated Circuits and Technology Symposium, BCICTS 2020

Y2 - 16 November 2020 through 19 November 2020

ER -

Reverse Intermodulation in Multi-Tone Array Transmitters

Abstract

Conference

Keywords

Access to Document

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Research output

A Figure of Merit for Simultaneous-Multi-Beam Transmit Antenna Arrays

The Load-Modulated linearizer: A technique for intermodulation cancellation in PA systems

Cite this