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Paper Abstract and Keywords
Presentation 2012-01-11 15:20
Multi-stage Balanced RF Rectifier Circuit
Kota Yamada, Takashi Arakawa, Masamune Takeda, Jun Uemura (Maspro), Kunio Sakakibara, Nobuyoshi Kikuma (Nagoya Inst. of Tech.), Takashi Ohira (Toyohashi Univ. Tech.) ED2011-127 MW2011-150
Abstract (in Japanese) (See Japanese page) 
(in English) High-efficiency rectifier circuits are getting expected for use in a variety of emerging RF applications such as wireless power transmission, energy harvesting, and imaging technology. They generally employ Schottky diodes to rectify the input RF waves. To fully exploit the input energy, an impedance matching network was inevitable in conventional rectifiers. Those networks often make the rectifiers suffer from possible undulation of input frequency, power level, and load impedance in practice. This paper suggests a new RF rectifier circuit scheme that offers wide band and high efficiency without resorting to matching circuits. It is based on a balanced pair of diodes coupled through a quadrature hybrid, but in turn, we appended another pair as the second stage in cascade. This makes it possible to recycle the reflected energy even there is a crucial mismatching in the first stage. By this technique, we designed and fabricated a prototype two-stage balanced version in S band. Measured results show that the scheme achieves 10.1 times broader frequency range in S11 and 7.3 times in power efficiency, than traditional ones. The experiment also successfully proved higher tolerance toward load impedance deviation.
Keyword (in Japanese) (See Japanese page) 
(in English) Branch-Line Coupler / Rectifier Efficiency / Wide Band / / / / /  
Reference Info. IEICE Tech. Rep., vol. 111, no. 374, MW2011-150, pp. 47-52, Jan. 2012.
Paper # MW2011-150 
Date of Issue 2012-01-04 (ED, MW) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
and
reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF ED2011-127 MW2011-150

Conference Information
Committee ED MW  
Conference Date 2012-01-11 - 2012-01-12 
Place (in Japanese) (See Japanese page) 
Place (in English) Kikai-Shinko-Kaikan Bldg 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To MW 
Conference Code 2012-01-ED-MW 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Multi-stage Balanced RF Rectifier Circuit 
Sub Title (in English)  
Keyword(1) Branch-Line Coupler  
Keyword(2) Rectifier Efficiency  
Keyword(3) Wide Band  
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1st Author's Name Kota Yamada  
1st Author's Affiliation Maspro Denkoh Corporation (Maspro)
2nd Author's Name Takashi Arakawa  
2nd Author's Affiliation Maspro Denkoh Corporation (Maspro)
3rd Author's Name Masamune Takeda  
3rd Author's Affiliation Maspro Denkoh Corporation (Maspro)
4th Author's Name Jun Uemura  
4th Author's Affiliation Maspro Denkoh Corporation (Maspro)
5th Author's Name Kunio Sakakibara  
5th Author's Affiliation Nagoya Institute of Technology (Nagoya Inst. of Tech.)
6th Author's Name Nobuyoshi Kikuma  
6th Author's Affiliation Nagoya Institute of Technology (Nagoya Inst. of Tech.)
7th Author's Name Takashi Ohira  
7th Author's Affiliation Toyohashi University of Technology (Toyohashi Univ. Tech.)
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Speaker Author-1 
Date Time 2012-01-11 15:20:00 
Presentation Time 25 minutes 
Registration for MW 
Paper # ED2011-127, MW2011-150 
Volume (vol) vol.111 
Number (no) no.373(ED), no.374(MW) 
Page pp.47-52 
#Pages 6 
Date of Issue 2012-01-04 (ED, MW) 

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