TY - GEN
T1 - A study on direct RF undersampling receiver configuration considering timing skew spurs using time-interleaved ADC
AU - Furuichi, Tomoyuki
AU - Motoyoshi, Mizuki
AU - Kameda, Suguru
AU - Suematsu, Noriharu
N1 - Funding Information:
This work is supported by the Ministry of Internal Affairs and Communications for the project entitled "R&D on Technologies to Densely and Efficiently Utilize Radio Resources of Unlicensed Bands in Dedicated Areas."
Publisher Copyright:
© 2018 IEICE
PY - 2019/1/16
Y1 - 2019/1/16
N2 - In this paper, we have studied the configuration of direct RF undersampling receiver using a time interleaved ADC (TI-ADC). In the case of higher order undersampling reception, the power levels of spurious due to the timing skew error of TI-ADC become higher than Nyquist sampling reception. We show that by adding an external sample and hold (S/H) IC in front of the TI-ADC, the spurious generated by the timing skew error can be reduced. The experimental result, using 920MHz-band undersampling receiver with 500MHz sampling clock, shows that the proposed configuration (with external S/H IC type) improves the maximum SFDR by 27 dB compared with the conventional one (no external S/H IC type).
AB - In this paper, we have studied the configuration of direct RF undersampling receiver using a time interleaved ADC (TI-ADC). In the case of higher order undersampling reception, the power levels of spurious due to the timing skew error of TI-ADC become higher than Nyquist sampling reception. We show that by adding an external sample and hold (S/H) IC in front of the TI-ADC, the spurious generated by the timing skew error can be reduced. The experimental result, using 920MHz-band undersampling receiver with 500MHz sampling clock, shows that the proposed configuration (with external S/H IC type) improves the maximum SFDR by 27 dB compared with the conventional one (no external S/H IC type).
KW - Direct RF undersampling
KW - Hold circuit
KW - Sample
KW - Time-Interleaved ADC
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U2 - 10.23919/APMC.2018.8617355
DO - 10.23919/APMC.2018.8617355
M3 - Conference contribution
AN - SCOPUS:85061794088
T3 - Asia-Pacific Microwave Conference Proceedings, APMC
SP - 1525
EP - 1527
BT - 2018 Asia-Pacific Microwave Conference, APMC 2018 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 30th Asia-Pacific Microwave Conference, APMC 2018
Y2 - 6 November 2018 through 9 November 2018
ER -