1/2<I>f<SUB>s</SUB></I> Direct RF Under Sampling Receiver for Multi Channel Satellite Systems

Daliso BANDA; Mizuki MOTOYOSHI; Tomokazu KOIZUMI; Osamu WADA; Tuan Thanh TA; Suguru KAMEDA; Noriharu SUEMATSU; Tadashi TAKAGI; Kazuo TSUBOUCHI

doi:10.1587/transele.E98.C.669

1/2f_s Direct RF Under Sampling Receiver for Multi Channel Satellite Systems

Daliso BANDA, Mizuki MOTOYOSHI, Tomokazu KOIZUMI, Osamu WADA, Tuan Thanh TA, Suguru KAMEDA, Noriharu SUEMATSU, Tadashi TAKAGI, Kazuo TSUBOUCHI

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RF under sampling is more suitable for Satellite receiver systems in comparison to terrestrial systems. In conventional RF under sampling the minimum sampling frequency (f_s) should be atleast twice the system bandwidth; therefore for a system with a wide bandwidth, a relatively high f_s is necessary. In this paper we propose a direct RF under sampling reception method that halves f_s. The proposed f'_s is achieved by folding in band noise in half. A method of adapting f'_s for the reception of signals in different channels is also proposed; this ensures that the SNR is not degraded for any channel. To evaluate the proposed technique's performance and compare it to the conventional case a 3 channel, 1 GHz band test receiver and it's key device (i.e. S/H circuit) are developed. Using SNR and EVM as performance indexes, the performance of the proposed technique has been evaluated and compared to that of the conventional technique. The evaluation results show that the proposed technique can achieve the same performance as conventional RF under sampling for all 3 channels, using only half of the sampling frequency of the conventional technique.

Publication: IEICE TRANSACTIONS on Electronics Vol.E98-C No.7 pp.669-676

Publication Date: 2015/07/01

Publicized

Online ISSN: 1745-1353

DOI: 10.1587/transele.E98.C.669

Type of Manuscript: Special Section PAPER (Special Section on Microwave and Millimeter-Wave Technology)

Category: Active Circuits/Devices/Monolithic Microwave Integrated Circuits

Authors

Daliso BANDA
  Tohoku University
Mizuki MOTOYOSHI
  Tohoku University
Tomokazu KOIZUMI
  Tohoku University
Osamu WADA
  Tohoku University
Tuan Thanh TA
  Tohoku University
Suguru KAMEDA
  Tohoku University
Noriharu SUEMATSU
  Tohoku University
Tadashi TAKAGI
  Tohoku University
Kazuo TSUBOUCHI
  Tohoku University

Keyword

RF sampling, Software Radio, sampling mixer, direct RF, RFIC, satellite communication

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Daliso BANDA, Mizuki MOTOYOSHI, Tomokazu KOIZUMI, Osamu WADA, Tuan Thanh TA, Suguru KAMEDA, Noriharu SUEMATSU, Tadashi TAKAGI, Kazuo TSUBOUCHI, "1/2fs Direct RF Under Sampling Receiver for Multi Channel Satellite Systems" in IEICE TRANSACTIONS on Electronics, vol. E98-C, no. 7, pp. 669-676, July 2015, doi: 10.1587/transele.E98.C.669.
Abstract: RF under sampling is more suitable for Satellite receiver systems in comparison to terrestrial systems. In conventional RF under sampling the minimum sampling frequency (f_s) should be atleast twice the system bandwidth; therefore for a system with a wide bandwidth, a relatively high f_s is necessary. In this paper we propose a direct RF under sampling reception method that halves f_s. The proposed f'_s is achieved by folding in band noise in half. A method of adapting f'_s for the reception of signals in different channels is also proposed; this ensures that the SNR is not degraded for any channel. To evaluate the proposed technique's performance and compare it to the conventional case a 3 channel, 1 GHz band test receiver and it's key device (i.e. S/H circuit) are developed. Using SNR and EVM as performance indexes, the performance of the proposed technique has been evaluated and compared to that of the conventional technique. The evaluation results show that the proposed technique can achieve the same performance as conventional RF under sampling for all 3 channels, using only half of the sampling frequency of the conventional technique.
URL: https://globals.ieice.org/en_transactions/electronics/10.1587/transele.E98.C.669/_p

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@ARTICLE{e98-c_7_669,
author={Daliso BANDA, Mizuki MOTOYOSHI, Tomokazu KOIZUMI, Osamu WADA, Tuan Thanh TA, Suguru KAMEDA, Noriharu SUEMATSU, Tadashi TAKAGI, Kazuo TSUBOUCHI, },
journal={IEICE TRANSACTIONS on Electronics},
title={1/2fs Direct RF Under Sampling Receiver for Multi Channel Satellite Systems},
year={2015},
volume={E98-C},
number={7},
pages={669-676},
abstract={RF under sampling is more suitable for Satellite receiver systems in comparison to terrestrial systems. In conventional RF under sampling the minimum sampling frequency (f_s) should be atleast twice the system bandwidth; therefore for a system with a wide bandwidth, a relatively high f_s is necessary. In this paper we propose a direct RF under sampling reception method that halves f_s. The proposed f'_s is achieved by folding in band noise in half. A method of adapting f'_s for the reception of signals in different channels is also proposed; this ensures that the SNR is not degraded for any channel. To evaluate the proposed technique's performance and compare it to the conventional case a 3 channel, 1 GHz band test receiver and it's key device (i.e. S/H circuit) are developed. Using SNR and EVM as performance indexes, the performance of the proposed technique has been evaluated and compared to that of the conventional technique. The evaluation results show that the proposed technique can achieve the same performance as conventional RF under sampling for all 3 channels, using only half of the sampling frequency of the conventional technique.},
keywords={},
doi={10.1587/transele.E98.C.669},
ISSN={1745-1353},
month={July},}

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TY - JOUR
TI - 1/2fs Direct RF Under Sampling Receiver for Multi Channel Satellite Systems
T2 - IEICE TRANSACTIONS on Electronics
SP - 669
EP - 676
AU - Daliso BANDA
AU - Mizuki MOTOYOSHI
AU - Tomokazu KOIZUMI
AU - Osamu WADA
AU - Tuan Thanh TA
AU - Suguru KAMEDA
AU - Noriharu SUEMATSU
AU - Tadashi TAKAGI
AU - Kazuo TSUBOUCHI
PY - 2015
DO - 10.1587/transele.E98.C.669
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E98-C
IS - 7
JA - IEICE TRANSACTIONS on Electronics
Y1 - July 2015
AB - RF under sampling is more suitable for Satellite receiver systems in comparison to terrestrial systems. In conventional RF under sampling the minimum sampling frequency (f_s) should be atleast twice the system bandwidth; therefore for a system with a wide bandwidth, a relatively high f_s is necessary. In this paper we propose a direct RF under sampling reception method that halves f_s. The proposed f'_s is achieved by folding in band noise in half. A method of adapting f'_s for the reception of signals in different channels is also proposed; this ensures that the SNR is not degraded for any channel. To evaluate the proposed technique's performance and compare it to the conventional case a 3 channel, 1 GHz band test receiver and it's key device (i.e. S/H circuit) are developed. Using SNR and EVM as performance indexes, the performance of the proposed technique has been evaluated and compared to that of the conventional technique. The evaluation results show that the proposed technique can achieve the same performance as conventional RF under sampling for all 3 channels, using only half of the sampling frequency of the conventional technique.
ER -