NRD Guide Pulse Radar for Level Sensor Applications at 60 GHz
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- Kuroki Futoshi
- Kure National College of Technology
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- Yamaoka Ko-ichi
- Kure National College of Technology
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- Ishikawa Sho-hei
- Kure National College of Technology
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- Murata Yu-suke
- Kure National College of Technology
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- Izuho Takeshi
- Kure National College of Technology
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- Yoneyama Tsukasa
- Tohoku Institute of Technology
Bibliographic Information
- Other Title
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- 測距用60GHz帯NRDガイドパルスレーダ
- ソッキョヨウ 60GHzタイ NRD ガイド パルス レーダ
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Abstract
An NRD guide pulse radar front-end was fabricated for level sensor applications at 60 GHz. Main emphasis was placed on circuit configuration. Typically, an oscillation power is divided by a junction circuit and is introduced into two parts. One is for transmitting wave, and the other is for LO wave to perform hetero-dyne detection. The frequency of the former is up-converted so as to be different from the frequency of the LO wave, and thus, a power amplifier is installed in the transmitting side due to low output power of the up-converted millimeter-wave. In this paper, we proposed a new circuit configuration, which consists of a Gunn oscillator with two output ports to eliminate a junction circuit, a direct pulse-modulator to obtain a high level transmitting power without an expensive millimeter-wave power amplifier, and a filter-based down-converter with an up-converter as a local oscillator.<br>Range finding was performed by using the NRD guide pulse radar, however multi-reflection occurred between a target and a planar antenna due to a pencil beam radiation of our developing planar antenna, so that precise distance estimation could not be performed for short range detection. With this in mind, an FPGA-based signal processor was developed in order to eliminate such multi-reflection. The sequential sampling method was employed to reduce experimental errors, which were investigated in terms of difference of periods between a modulated pulse train and a sequential sampling clock. The error of range finding was successfully reduced to be less than 2 % for the distance range from 2 m to 10 m under multi-reflection environment.
Journal
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- IEEJ Transactions on Electronics, Information and Systems
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IEEJ Transactions on Electronics, Information and Systems 128 (6), 825-831, 2008
The Institute of Electrical Engineers of Japan
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Details
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- CRID
- 1390282679582726400
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- NII Article ID
- 10021132505
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- NII Book ID
- AN10065950
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- ISSN
- 13488155
- 03854221
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- NDL BIB ID
- 9531740
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed