A low band cellular terminal antenna impedance tuner in 130nm CMOS-SOI technology

Jonas Lindstrand; Ivaylo Vasilev; Henrik Sjöland

doi:10.1109/ESSCIRC.2014.6942121

A low band cellular terminal antenna impedance tuner in 130nm CMOS-SOI technology

Jonas Lindstrand, Ivaylo Vasilev, Henrik Sjöland

Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

Abstract

This paper presents a low band antenna impedance tuner in 130nm CMOS-SOI technology. It consists of three digitally controlled switched capacitor banks and two off-chip inductors and is intended for use in terminals supporting modern cellular standards like WCDMA and LTE. By using a negative gate bias in the off state, linearity can be improved and maintained. Measurements show an OIP3 exceeding +55dBm for all measured impedance states, which cover a VSWR of up to 5.4. The measured minimum loss is 1dB or lower in the frequency range from 700–900MHz with spurious emissions below −30dBm at +33dBm input power. The switched capacitors are implemented with eight stacked transistors to yield a voltage handling of at least 20V, and in order to handle the large voltages custom designed capacitors are used.

Original language	English
Title of host publication	[Host publication title missing]
Publisher	IEEE - Institute of Electrical and Electronics Engineers Inc.
Pages	459-462
Number of pages	4
ISBN (Print)	978-1-4799-5694-4
DOIs	https://doi.org/10.1109/ESSCIRC.2014.6942121
Publication status	Published - 2014
Event	European Solid State Circuits Conference (ESSCIRC), 2014 - Venezia Lido, ITALY, Venice, Italy Duration: 2014 Sept 22 → 2014 Sept 26 Conference number: 40

Publication series

Name
ISSN (Print)	1930-8833

Conference

Conference	European Solid State Circuits Conference (ESSCIRC), 2014
Country/Territory	Italy
City	Venice
Period	2014/09/22 → 2014/09/26

Subject classification (UKÄ)

Electrical Engineering, Electronic Engineering, Information Engineering

Access to Document

10.1109/ESSCIRC.2014.6942121

1 Doctoral Thesis (compilation)

Integrated Transmitters for Cellular User Equipment–Wideband CMOS Power Amplifiers and Antenna Impedance Tuners
Lindstrand, J., 2019 Oct 15, 1 ed. Lund: Lund University, Faculty of Engineering. 138 p.
Research output: Thesis › Doctoral Thesis (compilation)

Open Access
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Cite this

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title = "A low band cellular terminal antenna impedance tuner in 130nm CMOS-SOI technology",

abstract = "This paper presents a low band antenna impedance tuner in 130nm CMOS-SOI technology. It consists of three digitally controlled switched capacitor banks and two off-chip inductors and is intended for use in terminals supporting modern cellular standards like WCDMA and LTE. By using a negative gate bias in the off state, linearity can be improved and maintained. Measurements show an OIP3 exceeding +55dBm for all measured impedance states, which cover a VSWR of up to 5.4. The measured minimum loss is 1dB or lower in the frequency range from 700–900MHz with spurious emissions below −30dBm at +33dBm input power. The switched capacitors are implemented with eight stacked transistors to yield a voltage handling of at least 20V, and in order to handle the large voltages custom designed capacitors are used.",

author = "Jonas Lindstrand and Ivaylo Vasilev and Henrik Sj{\"o}land",

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doi = "10.1109/ESSCIRC.2014.6942121",

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isbn = "978-1-4799-5694-4",

publisher = "IEEE - Institute of Electrical and Electronics Engineers Inc.",

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note = "European Solid State Circuits Conference (ESSCIRC), 2014 ; Conference date: 22-09-2014 Through 26-09-2014",

}

Lindstrand, J, Vasilev, I & Sjöland, H 2014, A low band cellular terminal antenna impedance tuner in 130nm CMOS-SOI technology. in [Host publication title missing]. IEEE - Institute of Electrical and Electronics Engineers Inc., pp. 459-462, European Solid State Circuits Conference (ESSCIRC), 2014, Venice, Italy, 2014/09/22. https://doi.org/10.1109/ESSCIRC.2014.6942121

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T1 - A low band cellular terminal antenna impedance tuner in 130nm CMOS-SOI technology

AU - Lindstrand, Jonas

AU - Vasilev, Ivaylo

AU - Sjöland, Henrik

N1 - Conference code: 40

PY - 2014

Y1 - 2014

N2 - This paper presents a low band antenna impedance tuner in 130nm CMOS-SOI technology. It consists of three digitally controlled switched capacitor banks and two off-chip inductors and is intended for use in terminals supporting modern cellular standards like WCDMA and LTE. By using a negative gate bias in the off state, linearity can be improved and maintained. Measurements show an OIP3 exceeding +55dBm for all measured impedance states, which cover a VSWR of up to 5.4. The measured minimum loss is 1dB or lower in the frequency range from 700–900MHz with spurious emissions below −30dBm at +33dBm input power. The switched capacitors are implemented with eight stacked transistors to yield a voltage handling of at least 20V, and in order to handle the large voltages custom designed capacitors are used.

AB - This paper presents a low band antenna impedance tuner in 130nm CMOS-SOI technology. It consists of three digitally controlled switched capacitor banks and two off-chip inductors and is intended for use in terminals supporting modern cellular standards like WCDMA and LTE. By using a negative gate bias in the off state, linearity can be improved and maintained. Measurements show an OIP3 exceeding +55dBm for all measured impedance states, which cover a VSWR of up to 5.4. The measured minimum loss is 1dB or lower in the frequency range from 700–900MHz with spurious emissions below −30dBm at +33dBm input power. The switched capacitors are implemented with eight stacked transistors to yield a voltage handling of at least 20V, and in order to handle the large voltages custom designed capacitors are used.

U2 - 10.1109/ESSCIRC.2014.6942121

DO - 10.1109/ESSCIRC.2014.6942121

M3 - Paper in conference proceeding

SN - 978-1-4799-5694-4

SP - 459

EP - 462

BT - [Host publication title missing]

PB - IEEE - Institute of Electrical and Electronics Engineers Inc.

T2 - European Solid State Circuits Conference (ESSCIRC), 2014

Y2 - 22 September 2014 through 26 September 2014

ER -

A low band cellular terminal antenna impedance tuner in 130nm CMOS-SOI technology

Abstract

Publication series

Conference

Subject classification (UKÄ)

Access to Document

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Research output

Integrated Transmitters for Cellular User Equipment–Wideband CMOS Power Amplifiers and Antenna Impedance Tuners

Cite this