The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
Copyrights notice
The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Dalam kertas ini, kami mencadangkan pemancar RF digital terus dengan modulator delta-sigma laluan jalur 1-bit (BP-DSM) yang menggunakan komponen imej tertib tinggi bagi 7th Zon Nyquist dalam pengekodan Manchester untuk aplikasi gelombang gelombang mikro dan milimeter. Berbanding dengan pengekodan bukan pulangan-ke-sifar (NRZ) konvensional, di mana komponen imej tertib tinggi 1-bit BP-DSM melemahkan teruk dalam bentuk fungsi sinc, pemancar RF digital langsung 1-bit yang dicadangkan di Manchester kod boleh meningkatkan kuasa output dan nisbah isyarat-ke-bunyi (SNR) komponen imej pada spesifik (4n-1)th dan (4n-2)th Zon Nyquist, yang disahkan dengan mengira ketumpatan spektrum kuasa. Pengukuran dibuat untuk membandingkan tiga jenis isyarat penukar digital-ke-analog (DAC) 1-bit dalam kuasa output dan SNR; NRZ, 50% duti return-to-sifar (RZ) dan pengekodan Manchester. Dengan menggunakan 1 VppOutput DAC /8Gbps, isyarat 1-bit dalam pengekodan Manchester menunjukkan kuasa keluaran tertinggi -20.3dBm dan SNR sebanyak 40.3dB pada 7th Zon Nyquist (26GHz) dalam keadaan CW. Akibatnya, berbanding pengekodan NRZ dan RZ, pada 7th Zon Nyquist, kuasa output dipertingkatkan masing-masing sebanyak 8.1dB dan 6dB. Sementara itu, SNR dipertingkatkan masing-masing sebanyak 7.6dB dan 4.9dB. Dalam keadaan 5Mbps-QPSK, isyarat 1-bit dalam kod Manchester menunjukkan magnitud vektor ralat (EVM) terendah sebanyak 2.4% dan nisbah kebocoran saluran bersebelahan (ACLR) tertinggi sebanyak 38.2dB dengan kuasa keluaran tertinggi -18.5dBm pada 7th Zon Nyquist (26GHz), masing-masing, berbanding pengekodan RZ NRZ dan 50% tugas. Hasil pengukuran dan simulasi komponen imej bagi isyarat 1-bit pada 7th Zon Nyquist (26GHz) adalah konsisten dengan keputusan pengiraan.
Junhao ZHANG
Tohoku University
Masafumi KAZUNO
Tohoku University
Mizuki MOTOYOSHI
Tohoku University
Suguru KAMEDA
Tohoku University
Noriharu SUEMATSU
Tohoku University
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Salinan
Junhao ZHANG, Masafumi KAZUNO, Mizuki MOTOYOSHI, Suguru KAMEDA, Noriharu SUEMATSU, "Image Enhancement in 26GHz-Band 1-Bit Direct Digital RF Transmitter Using Manchester Coding" in IEICE TRANSACTIONS on Communications,
vol. E104-B, no. 6, pp. 654-663, June 2021, doi: 10.1587/transcom.2020EBP3083.
Abstract: In this paper, we propose a direct digital RF transmitter with a 1-bit band-pass delta-sigma modulator (BP-DSM) that uses high order image components of the 7th Nyquist zone in Manchester coding for microwave and milimeter wave application. Compared to the conventional non-return-to-zero (NRZ) coding, in which the high order image components of 1-bit BP-DSM attenuate severely in the form of sinc function, the proposed 1-bit direct digital RF transmitter in Manchester code can improve the output power and signal-to-noise ratio (SNR) of the image components at specific (4n-1)th and (4n-2)th Nyquist Zone, which is confirmed by calculating of the power spectral density. Measurements are made to compare three types of 1-bit digital-to-analog converter (DAC) signal in output power and SNR; NRZ, 50% duty return-to-zero (RZ) and Manchester coding. By using 1 Vpp/8Gbps DAC output, 1-bit signals in Manchester coding show the highest output power of -20.3dBm and SNR of 40.3dB at 7th Nyquist Zone (26GHz) in CW condition. As a result, compared to NRZ and RZ coding, at 7th Nyquist zone, the output power is improved by 8.1dB and 6dB, respectively. Meanwhile, the SNR is improved by 7.6dB and 4.9dB, respectively. In 5Mbps-QPSK condition, 1-bit signals in Manchester code show the lowest error vector magnitude (EVM) of 2.4% and the highest adjacent channel leakage ratio (ACLR) of 38.2dB with the highest output power of -18.5dBm at 7th Nyquist Zone (26GHz), respectively, compared to the NRZ and 50% duty RZ coding. The measurement and simulation results of the image component of 1-bit signals at 7th Nyquist Zone (26GHz) are consistent with the calculation results.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.2020EBP3083/_p
Salinan
@ARTICLE{e104-b_6_654,
author={Junhao ZHANG, Masafumi KAZUNO, Mizuki MOTOYOSHI, Suguru KAMEDA, Noriharu SUEMATSU, },
journal={IEICE TRANSACTIONS on Communications},
title={Image Enhancement in 26GHz-Band 1-Bit Direct Digital RF Transmitter Using Manchester Coding},
year={2021},
volume={E104-B},
number={6},
pages={654-663},
abstract={In this paper, we propose a direct digital RF transmitter with a 1-bit band-pass delta-sigma modulator (BP-DSM) that uses high order image components of the 7th Nyquist zone in Manchester coding for microwave and milimeter wave application. Compared to the conventional non-return-to-zero (NRZ) coding, in which the high order image components of 1-bit BP-DSM attenuate severely in the form of sinc function, the proposed 1-bit direct digital RF transmitter in Manchester code can improve the output power and signal-to-noise ratio (SNR) of the image components at specific (4n-1)th and (4n-2)th Nyquist Zone, which is confirmed by calculating of the power spectral density. Measurements are made to compare three types of 1-bit digital-to-analog converter (DAC) signal in output power and SNR; NRZ, 50% duty return-to-zero (RZ) and Manchester coding. By using 1 Vpp/8Gbps DAC output, 1-bit signals in Manchester coding show the highest output power of -20.3dBm and SNR of 40.3dB at 7th Nyquist Zone (26GHz) in CW condition. As a result, compared to NRZ and RZ coding, at 7th Nyquist zone, the output power is improved by 8.1dB and 6dB, respectively. Meanwhile, the SNR is improved by 7.6dB and 4.9dB, respectively. In 5Mbps-QPSK condition, 1-bit signals in Manchester code show the lowest error vector magnitude (EVM) of 2.4% and the highest adjacent channel leakage ratio (ACLR) of 38.2dB with the highest output power of -18.5dBm at 7th Nyquist Zone (26GHz), respectively, compared to the NRZ and 50% duty RZ coding. The measurement and simulation results of the image component of 1-bit signals at 7th Nyquist Zone (26GHz) are consistent with the calculation results.},
keywords={},
doi={10.1587/transcom.2020EBP3083},
ISSN={1745-1345},
month={June},}
Salinan
TY - JOUR
TI - Image Enhancement in 26GHz-Band 1-Bit Direct Digital RF Transmitter Using Manchester Coding
T2 - IEICE TRANSACTIONS on Communications
SP - 654
EP - 663
AU - Junhao ZHANG
AU - Masafumi KAZUNO
AU - Mizuki MOTOYOSHI
AU - Suguru KAMEDA
AU - Noriharu SUEMATSU
PY - 2021
DO - 10.1587/transcom.2020EBP3083
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E104-B
IS - 6
JA - IEICE TRANSACTIONS on Communications
Y1 - June 2021
AB - In this paper, we propose a direct digital RF transmitter with a 1-bit band-pass delta-sigma modulator (BP-DSM) that uses high order image components of the 7th Nyquist zone in Manchester coding for microwave and milimeter wave application. Compared to the conventional non-return-to-zero (NRZ) coding, in which the high order image components of 1-bit BP-DSM attenuate severely in the form of sinc function, the proposed 1-bit direct digital RF transmitter in Manchester code can improve the output power and signal-to-noise ratio (SNR) of the image components at specific (4n-1)th and (4n-2)th Nyquist Zone, which is confirmed by calculating of the power spectral density. Measurements are made to compare three types of 1-bit digital-to-analog converter (DAC) signal in output power and SNR; NRZ, 50% duty return-to-zero (RZ) and Manchester coding. By using 1 Vpp/8Gbps DAC output, 1-bit signals in Manchester coding show the highest output power of -20.3dBm and SNR of 40.3dB at 7th Nyquist Zone (26GHz) in CW condition. As a result, compared to NRZ and RZ coding, at 7th Nyquist zone, the output power is improved by 8.1dB and 6dB, respectively. Meanwhile, the SNR is improved by 7.6dB and 4.9dB, respectively. In 5Mbps-QPSK condition, 1-bit signals in Manchester code show the lowest error vector magnitude (EVM) of 2.4% and the highest adjacent channel leakage ratio (ACLR) of 38.2dB with the highest output power of -18.5dBm at 7th Nyquist Zone (26GHz), respectively, compared to the NRZ and 50% duty RZ coding. The measurement and simulation results of the image component of 1-bit signals at 7th Nyquist Zone (26GHz) are consistent with the calculation results.
ER -