A voltage-translinear based CMOS signal component separator chip for linear LINC transmitters
(2002) In Analog Integrated Circuits and Signal Processing 30(1). p.31-39- Abstract
- The LINC transmitter is an architecture that provides linear amplification using nonlinear but power efficient amplifiers. One crucial signal processing function of LINC is the signal component separator (SCS) which forms two constant-amplitude phase-modulated signals from the source signal. This paper presents an analog SCS chip implemented in a 0.35 mum CMOS process using a novel design based on the so-called voltage-translinear circuit principle. An experimental LINC transmitter was built with the SCS chip, nonlinear amplifiers and a power combiner. Test results showed that all output spurious levels some -55 dBc and -48 dBc could be obtained with a North American Digital Cellular (NADC) signal and an IS-95 signal, respectively. This... (More)
- The LINC transmitter is an architecture that provides linear amplification using nonlinear but power efficient amplifiers. One crucial signal processing function of LINC is the signal component separator (SCS) which forms two constant-amplitude phase-modulated signals from the source signal. This paper presents an analog SCS chip implemented in a 0.35 mum CMOS process using a novel design based on the so-called voltage-translinear circuit principle. An experimental LINC transmitter was built with the SCS chip, nonlinear amplifiers and a power combiner. Test results showed that all output spurious levels some -55 dBc and -48 dBc could be obtained with a North American Digital Cellular (NADC) signal and an IS-95 signal, respectively. This implies a high degree of linearity. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/352083
- author
- Shi, B and Sundström, Lars LU
- organization
- publishing date
- 2002
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- LINC, power amplifiers, RF, translinear circuits, linear transmitters, analog CMOS circuits
- in
- Analog Integrated Circuits and Signal Processing
- volume
- 30
- issue
- 1
- pages
- 31 - 39
- publisher
- Springer
- external identifiers
-
- wos:000171485800004
- scopus:0036174057
- ISSN
- 0925-1030
- DOI
- 10.1023/A:1012496620216
- language
- English
- LU publication?
- yes
- id
- 1b3861d9-0bce-47b7-b3de-f800c8962164 (old id 352083)
- date added to LUP
- 2016-04-01 17:01:07
- date last changed
- 2022-01-28 23:44:51
@article{1b3861d9-0bce-47b7-b3de-f800c8962164, abstract = {{The LINC transmitter is an architecture that provides linear amplification using nonlinear but power efficient amplifiers. One crucial signal processing function of LINC is the signal component separator (SCS) which forms two constant-amplitude phase-modulated signals from the source signal. This paper presents an analog SCS chip implemented in a 0.35 mum CMOS process using a novel design based on the so-called voltage-translinear circuit principle. An experimental LINC transmitter was built with the SCS chip, nonlinear amplifiers and a power combiner. Test results showed that all output spurious levels some -55 dBc and -48 dBc could be obtained with a North American Digital Cellular (NADC) signal and an IS-95 signal, respectively. This implies a high degree of linearity.}}, author = {{Shi, B and Sundström, Lars}}, issn = {{0925-1030}}, keywords = {{LINC; power amplifiers; RF; translinear circuits; linear transmitters; analog CMOS circuits}}, language = {{eng}}, number = {{1}}, pages = {{31--39}}, publisher = {{Springer}}, series = {{Analog Integrated Circuits and Signal Processing}}, title = {{A voltage-translinear based CMOS signal component separator chip for linear LINC transmitters}}, url = {{http://dx.doi.org/10.1023/A:1012496620216}}, doi = {{10.1023/A:1012496620216}}, volume = {{30}}, year = {{2002}}, }