무용성 공중 전파 활용을 위한 저전력 렉테나 설계

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Design of Low Power Rectenna Applying
Ambient Radio Sources

Guen Sik Kim
Advisor : Prof. Dong You Choi Ph.D.
Department of Information and communications Engineering
Graduate School of Chosun University

The interface components and modules used in the receiving section of sensors around the mobile electronic devices or RFID-based technologies require low voltage source for its operation. In this paper, design of low power rectenna utilizing ambient air frequency has been studied
Microstrip patch antenna is an antenna fabricated on 1.6 mm thick FR4 substrate having dielectric constant of 4.7. The proposed antenna with total dimension of 36.25mm х 77mm including 210mm as the length of rectifying circuit have clamp circuit and was designed to increase the conversion efficiency.
The designed antenna resonates at 2.45GHz with reflection loss of 21.58dB. The power efficiency of the antenna with center frequency of 2.45GHz are experimentally calculated for different values ​​of distance between transmit and receiving antenna ranging up to 10 mm. The final RF to DC conversion efficiency of rectenna was achieved as 55%.
The antenna gain is reduced in dual-resonant and multi-frequency mode, so it is the improvement of parts of the device used in the rectifier circuit. In compact rectenna design, wireless power transmission technology is expected to be low power and low voltage in order to drive wireless applications.
Alternative Title
Design of Low Power Rectenna Applying Ambient Radio Sources
Alternative Author(s)
Guen Sik Kim
일반대학원 정보통신공학과
Awarded Date
Table Of Contents
1. 서 론 1

1.1 연구 목적 1
1.2 연구 동향 1
1.3 연구 배경 2
1.4 연구 내용 3

2. 이론적 배경 4

2.1 무선전력 전송 방법 4

2.1.1 원거리 전송방식 6
2.1.2 근거리 전송방식 7
2.1.3 자기유도 방식 9
2.1.4 자기공명 방식 9

2.2 송·수신 시스템과 인체 보호기준 11

2.2.1 송·수신 시스템 11
2.2.2 인체 보호기준 12

3. 렉테나 설계 및 제작 14

3.1 렉테나의 정의 및 기본구조 14
3.2 패치 안테나 설계 17

3.2.1 패치 안테나의 특징 17
3.2.2 패치 안테나의 설계 및 시뮬레이션 19

3.3 정류회로 설계 26

3.3.1 다이오드 선택 26
3.3.2 정류회로 설계 및 시뮬레이션 28

4. 렉테나 제작 및 측정 31

4.1 렉테나 제작 31
4.2 렉테나 측정 33

5. 결론 37

참고문헌 38
조선대학교 대학원
김근식. (2012). 무용성 공중 전파 활용을 위한 저전력 렉테나 설계.
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General Graduate School > 3. Theses(Master)
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