TY - GEN
T1 - 26 GHz-band direct digital signal generation by a manchester coding 1-bit band-pass delta-sigma modulator using it's 7th nyquist zone
AU - Kazuno, Masafumi
AU - Motoyoshi, Mizuki
AU - Kameda, Suguru
AU - Suematsu, Noriharu
N1 - Funding Information:
The authors would like to thank T. Maehata for useful discussions. A part of this research was supported by the MIC/SCOPE #155002005.
Publisher Copyright:
© 2018 IEEE.
PY - 2018/8/17
Y1 - 2018/8/17
N2 - In this paper, we propose a direct digital RF transmitter using a I-bit band-pass delta-sigma modulator for micro-wave/millimeter-wave applications. This transmitter directly generates a RF signal from the lower rate 1-bit stream by utilizing it's higher order Nyquist zone. We made signal power and SNR comparisons between three types of 1-blt DAC signals; non-return-to-zero (NRZ), 50% duty return-to-zero (RZ) and Manchester coding. By using 1Vp-p/8 Gbps DAC output, Manchester coding shows the highest output signal power of-20.3 dBm and SNR of more than 40 dB in the 7th Nyquist zone (around 26 GHz). Based on this study, we have tried to adopt this technique to generate a 26 GHz-band 5 Mbps QPSK modulated signal and have confirmed that an EVM of 2.4% can be obtained in the 7th Nyquist zone.
AB - In this paper, we propose a direct digital RF transmitter using a I-bit band-pass delta-sigma modulator for micro-wave/millimeter-wave applications. This transmitter directly generates a RF signal from the lower rate 1-bit stream by utilizing it's higher order Nyquist zone. We made signal power and SNR comparisons between three types of 1-blt DAC signals; non-return-to-zero (NRZ), 50% duty return-to-zero (RZ) and Manchester coding. By using 1Vp-p/8 Gbps DAC output, Manchester coding shows the highest output signal power of-20.3 dBm and SNR of more than 40 dB in the 7th Nyquist zone (around 26 GHz). Based on this study, we have tried to adopt this technique to generate a 26 GHz-band 5 Mbps QPSK modulated signal and have confirmed that an EVM of 2.4% can be obtained in the 7th Nyquist zone.
KW - 1-blt
KW - Delta-sigma
KW - Digital to analog converter
KW - Direct digital to RF
KW - Image
KW - Microwaves
KW - Transmitters
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U2 - 10.1109/GSMM.2018.8439555
DO - 10.1109/GSMM.2018.8439555
M3 - Conference contribution
AN - SCOPUS:85053131127
SN - 9781538645840
T3 - 2018 11th Global Symposium on Millimeter Waves, GSMM 2018
BT - 2018 11th Global Symposium on Millimeter Waves, GSMM 2018
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 11th Global Symposium on Millimeter Waves, GSMM 2018
Y2 - 22 May 2018 through 24 May 2018
ER -