A 10-bit wide-band CMOS direct digital RF amplitude modulator
(2003) In IEEE Journal of Solid-State Circuits 38(7). p.1182-1188- Abstract
- This paper describes a low-distortion wide-band CMOS direct digital RF amplitude modulator, which uses a 10-bit linear interpolation current-steering digital-to-analog converter (DAC) and a Gilbert-cell-based mixer to generate an amplitude modulated RF signal directly. The linear interpolation increases the attenuation of the DAC's image components. The reconstruction filter is, therefore, eliminated. The DAC's differential current signals are directly sent to the mixer, which improves the linearity of the modulated RF signal. Thus, the RF transmitter structure is simplified, and the low distortion is achieved. This modulator is suitable for system-on-chip (SOC) design and is easily scalable. The chip was fabricated in a 0.35-/spl mu/m... (More)
- This paper describes a low-distortion wide-band CMOS direct digital RF amplitude modulator, which uses a 10-bit linear interpolation current-steering digital-to-analog converter (DAC) and a Gilbert-cell-based mixer to generate an amplitude modulated RF signal directly. The linear interpolation increases the attenuation of the DAC's image components. The reconstruction filter is, therefore, eliminated. The DAC's differential current signals are directly sent to the mixer, which improves the linearity of the modulated RF signal. Thus, the RF transmitter structure is simplified, and the low distortion is achieved. This modulator is suitable for system-on-chip (SOC) design and is easily scalable. The chip was fabricated in a 0.35-/spl mu/m 3.3-V double-poly triple-metal CMOS process. The core size of the chip is 0.52 mm/spl times/0.68 mm. With a 3.3-MHz modulation signal, a 50-MHz clock, and a 1-GHz carrier, the distortion components are below -53.81 dBc, and the attenuation of the image signal is 47.45 dB. The output power is -6.5 dBm, and the total power consumption is 159.8 mW. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1049667
- author
- Yijun, Zhou LU and Yuan, Jiren LU
- organization
- publishing date
- 2003
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- radio-frequency integrated circuit, CMOS integrated circuit, amplitude modulation, digital-to-analog, converter (DAC), (RFIC), interpolation
- in
- IEEE Journal of Solid-State Circuits
- volume
- 38
- issue
- 7
- pages
- 1182 - 1188
- publisher
- IEEE - Institute of Electrical and Electronics Engineers Inc.
- external identifiers
-
- wos:000183822600012
- scopus:0037480246
- ISSN
- 0018-9200
- DOI
- 10.1109/JSSC.2003.813290
- language
- English
- LU publication?
- yes
- id
- 3867c643-6a1d-4abe-96d7-591839f1a49b (old id 1049667)
- date added to LUP
- 2016-04-01 17:02:32
- date last changed
- 2022-01-28 23:55:38
@article{3867c643-6a1d-4abe-96d7-591839f1a49b,
abstract = {{This paper describes a low-distortion wide-band CMOS direct digital RF amplitude modulator, which uses a 10-bit linear interpolation current-steering digital-to-analog converter (DAC) and a Gilbert-cell-based mixer to generate an amplitude modulated RF signal directly. The linear interpolation increases the attenuation of the DAC's image components. The reconstruction filter is, therefore, eliminated. The DAC's differential current signals are directly sent to the mixer, which improves the linearity of the modulated RF signal. Thus, the RF transmitter structure is simplified, and the low distortion is achieved. This modulator is suitable for system-on-chip (SOC) design and is easily scalable. The chip was fabricated in a 0.35-/spl mu/m 3.3-V double-poly triple-metal CMOS process. The core size of the chip is 0.52 mm/spl times/0.68 mm. With a 3.3-MHz modulation signal, a 50-MHz clock, and a 1-GHz carrier, the distortion components are below -53.81 dBc, and the attenuation of the image signal is 47.45 dB. The output power is -6.5 dBm, and the total power consumption is 159.8 mW.}},
author = {{Yijun, Zhou and Yuan, Jiren}},
issn = {{0018-9200}},
keywords = {{radio-frequency integrated circuit; CMOS integrated circuit; amplitude modulation; digital-to-analog; converter (DAC); (RFIC); interpolation}},
language = {{eng}},
number = {{7}},
pages = {{1182--1188}},
publisher = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}},
series = {{IEEE Journal of Solid-State Circuits}},
title = {{A 10-bit wide-band CMOS direct digital RF amplitude modulator}},
url = {{http://dx.doi.org/10.1109/JSSC.2003.813290}},
doi = {{10.1109/JSSC.2003.813290}},
volume = {{38}},
year = {{2003}},
}