Transmitter linearisation techniques for the 1.5-1.7 GHz MSAT bands

RJ Wilkinson; JR Macleod; MA Beach; A Bateman

Transmitter linearisation techniques for the 1.5-1.7 GHz MSAT bands

RJ Wilkinson, JR Macleod, MA Beach, A Bateman

Research output: Chapter in Book/Report/Conference proceeding › Conference Contribution (Conference Proceeding)

Abstract

The two favoured modulation techniques for MSAT ACSSB and filtered QPSK, both exhibit a non-constant envelope, and thus require linear amplification to avoid undue spectral spreading into adjacent channels. Transmitter linearity is not easily achieved at these frequencies. The authors address this problem through the application of feedback control techniques to improve the linearity of the entire transmitter system incorporating the nonlinear amplifying element. It is shown that with appropriate choice of feedback structure, it is possible to improve the linearity of Class C amplifier stages to give superior performance to those of uncompensated Class A devices, thus greatly improving the transmitter power efficiency and reducing component cost

Translated title of the contribution	Transmitter linearisation techniques for the 1.5-1.7 GHz MSAT bands
Original language	English
Title of host publication	Fifth International Conference on Radio Receivers and Associated Systems, Cambridge
Publisher	Institution of Engineering and Technology (IET)
Pages	173 - 176
Number of pages	4
ISBN (Print)	0863417051
Publication status	Published - Jul 1990
Event	5th International Conference on Radio Receivers and Associated Systems - Cambridge, United Kingdom Duration: 1 Jul 1990 → …

Conference

Conference	5th International Conference on Radio Receivers and Associated Systems
Country/Territory	United Kingdom
City	Cambridge
Period	1/07/90 → …

Bibliographical note

Conference Proceedings/Title of Journal: Fifth International Conference on Radio Receivers and Associated Systems
Rose publication type: Conference contribution

Sponsorship: The authors wish to thank David Bennet for his invaluable help with the fabrication of the up- and down- converters and the loop phase shifter for the 1.7GHz system

Other identifier: IEE Publ. No. 325

Keywords

mobile radio systems
radio transmitters
radiofrequency amplifiers
satellite relay systems

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@inproceedings{33551b044a0b47b8886dc9302a81ba63,

title = "Transmitter linearisation techniques for the 1.5-1.7 GHz MSAT bands",

abstract = "The two favoured modulation techniques for MSAT ACSSB and filtered QPSK, both exhibit a non-constant envelope, and thus require linear amplification to avoid undue spectral spreading into adjacent channels. Transmitter linearity is not easily achieved at these frequencies. The authors address this problem through the application of feedback control techniques to improve the linearity of the entire transmitter system incorporating the nonlinear amplifying element. It is shown that with appropriate choice of feedback structure, it is possible to improve the linearity of Class C amplifier stages to give superior performance to those of uncompensated Class A devices, thus greatly improving the transmitter power efficiency and reducing component cost",

keywords = "mobile radio systems, radio transmitters, radiofrequency amplifiers, satellite relay systems",

author = "RJ Wilkinson and JR Macleod and MA Beach and A Bateman",

note = "Conference Proceedings/Title of Journal: Fifth International Conference on Radio Receivers and Associated Systems Rose publication type: Conference contribution Sponsorship: The authors wish to thank David Bennet for his invaluable help with the fabrication of the up- and down- converters and the loop phase shifter for the 1.7GHz system Other identifier: IEE Publ. No. 325; 5th International Conference on Radio Receivers and Associated Systems ; Conference date: 01-07-1990",

year = "1990",

month = jul,

language = "English",

isbn = "0863417051",

pages = "173 -- 176",

booktitle = "Fifth International Conference on Radio Receivers and Associated Systems, Cambridge",

publisher = "Institution of Engineering and Technology (IET)",

address = "United Kingdom",

}

Wilkinson, RJ, Macleod, JR, Beach, MA & Bateman, A 1990, Transmitter linearisation techniques for the 1.5-1.7 GHz MSAT bands. in Fifth International Conference on Radio Receivers and Associated Systems, Cambridge. Institution of Engineering and Technology (IET), pp. 173 - 176, 5th International Conference on Radio Receivers and Associated Systems, Cambridge, United Kingdom, 1/07/90. <http://hdl.handle.net/1983/761>

Transmitter linearisation techniques for the 1.5-1.7 GHz MSAT bands. / Wilkinson, RJ; Macleod, JR; Beach, MA et al.
Fifth International Conference on Radio Receivers and Associated Systems, Cambridge. Institution of Engineering and Technology (IET), 1990. p. 173 - 176.

Research output: Chapter in Book/Report/Conference proceeding › Conference Contribution (Conference Proceeding)

TY - GEN

T1 - Transmitter linearisation techniques for the 1.5-1.7 GHz MSAT bands

AU - Wilkinson, RJ

AU - Macleod, JR

AU - Beach, MA

AU - Bateman, A

N1 - Conference Proceedings/Title of Journal: Fifth International Conference on Radio Receivers and Associated Systems Rose publication type: Conference contribution Sponsorship: The authors wish to thank David Bennet for his invaluable help with the fabrication of the up- and down- converters and the loop phase shifter for the 1.7GHz system Other identifier: IEE Publ. No. 325

PY - 1990/7

Y1 - 1990/7

N2 - The two favoured modulation techniques for MSAT ACSSB and filtered QPSK, both exhibit a non-constant envelope, and thus require linear amplification to avoid undue spectral spreading into adjacent channels. Transmitter linearity is not easily achieved at these frequencies. The authors address this problem through the application of feedback control techniques to improve the linearity of the entire transmitter system incorporating the nonlinear amplifying element. It is shown that with appropriate choice of feedback structure, it is possible to improve the linearity of Class C amplifier stages to give superior performance to those of uncompensated Class A devices, thus greatly improving the transmitter power efficiency and reducing component cost

AB - The two favoured modulation techniques for MSAT ACSSB and filtered QPSK, both exhibit a non-constant envelope, and thus require linear amplification to avoid undue spectral spreading into adjacent channels. Transmitter linearity is not easily achieved at these frequencies. The authors address this problem through the application of feedback control techniques to improve the linearity of the entire transmitter system incorporating the nonlinear amplifying element. It is shown that with appropriate choice of feedback structure, it is possible to improve the linearity of Class C amplifier stages to give superior performance to those of uncompensated Class A devices, thus greatly improving the transmitter power efficiency and reducing component cost

KW - mobile radio systems

KW - radio transmitters

KW - radiofrequency amplifiers

KW - satellite relay systems

M3 - Conference Contribution (Conference Proceeding)

SN - 0863417051

SP - 173

EP - 176

BT - Fifth International Conference on Radio Receivers and Associated Systems, Cambridge

PB - Institution of Engineering and Technology (IET)

T2 - 5th International Conference on Radio Receivers and Associated Systems

Y2 - 1 July 1990

ER -

Transmitter linearisation techniques for the 1.5-1.7 GHz MSAT bands

Abstract

Conference

Bibliographical note

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