An 18dBm transmitter frontend with 29% PAE for 24GHz FMCW radar applications

Wei-Hsiu Hung; Huan Sheng Chen; Shu Han Chou; Liang Hung Lu

doi:10.1109/RFIC.2012.6242249

An 18dBm transmitter frontend with 29% PAE for 24GHz FMCW radar applications

Wei-Hsiu Hung, Huan Sheng Chen, Shu Han Chou, Liang Hung Lu

Department of Chemistry

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

8 Citations (Scopus)

Abstract

A CMOS transmitter frontend integrated circuit suitable for 24-GHz frequency-modulated continuous-wave (FMCW) radar applications is presented in this paper. With a transformer-based power-combining technique and pseudo-differential class-AB power amplifiers (PAs), the proposed circuit exhibits enhanced output power and efficiency at a nominal supply voltage. In addition, a voltage-controlled oscillator is incorporated for frequency modulation purposes while differential amplifiers are utilized as the driver stages for the PAs to facilitate near-saturation circuit operation. The transmitter frontend is fabricated in a 65-nm CMOS process, demonstrating an output power of 18 dBm and a power-added efficiency (PAE) of 29% at 1.2-V supply voltage.

Original language	English
Title of host publication	2012 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2012 - Digest of Papers
Pages	137-140
Number of pages	4
DOIs	https://doi.org/10.1109/RFIC.2012.6242249
Publication status	Published - 2012 Sep 28
Event	2012 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2012 - Montreal, QC, Canada Duration: 2012 Jun 17 → 2012 Jun 19

Other

Other	2012 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2012
Country	Canada
City	Montreal, QC
Period	2012/06/17 → 2012/06/19

Keywords

CMOS
FMCW
efficiency
power amplifier
transmitter

ASJC Scopus subject areas

Engineering(all)

Access to Document

10.1109/RFIC.2012.6242249

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Hung, W-H, Chen, HS, Chou, SH & Lu, LH 2012, An 18dBm transmitter frontend with 29% PAE for 24GHz FMCW radar applications. in 2012 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2012 - Digest of Papers., 6242249, pp. 137-140, 2012 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2012, Montreal, QC, Canada, 2012/06/17. https://doi.org/10.1109/RFIC.2012.6242249

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abstract = "A CMOS transmitter frontend integrated circuit suitable for 24-GHz frequency-modulated continuous-wave (FMCW) radar applications is presented in this paper. With a transformer-based power-combining technique and pseudo-differential class-AB power amplifiers (PAs), the proposed circuit exhibits enhanced output power and efficiency at a nominal supply voltage. In addition, a voltage-controlled oscillator is incorporated for frequency modulation purposes while differential amplifiers are utilized as the driver stages for the PAs to facilitate near-saturation circuit operation. The transmitter frontend is fabricated in a 65-nm CMOS process, demonstrating an output power of 18 dBm and a power-added efficiency (PAE) of 29% at 1.2-V supply voltage.",

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N2 - A CMOS transmitter frontend integrated circuit suitable for 24-GHz frequency-modulated continuous-wave (FMCW) radar applications is presented in this paper. With a transformer-based power-combining technique and pseudo-differential class-AB power amplifiers (PAs), the proposed circuit exhibits enhanced output power and efficiency at a nominal supply voltage. In addition, a voltage-controlled oscillator is incorporated for frequency modulation purposes while differential amplifiers are utilized as the driver stages for the PAs to facilitate near-saturation circuit operation. The transmitter frontend is fabricated in a 65-nm CMOS process, demonstrating an output power of 18 dBm and a power-added efficiency (PAE) of 29% at 1.2-V supply voltage.

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