| Autor: |
Young-Ro Kim, Jong-Myung Woo, Yong-Hyu Kim, Myung-Joon Hur |
| Rok vydání: |
2013 |
| Předmět: |
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| Zdroj: |
The Journal of Korean Institute of Electromagnetic Engineering and Science. 24:219-232 |
| ISSN: |
1226-3133 |
| DOI: |
10.5515/kjkiees.2013.24.3.219 |
| Popis: |
This paper presents a microstrip antenna which recovers its resonant frequency and impedance shifted automatically by the approach of other objects such as hands. This can be used for telemetry sensor applications in the ultrahigh frequency(UHF) industrial, scientific, and medical(ISM) band. It is the key element that an frequency-reconfigurable antenna could be electrically controlled. This antenna is miniaturized by loading the folded plates at both radiating edges, and varactor diodes are installed between the radiating edges and the ground plane to control the resonant frequency by adjusting the DC bias asymmetrically. Using this voltage-controlled antenna and the micro controller peripheral circuits of reading the returned level, the antenna is designed and fabricated which recovers its resonant frequency and impedance automatically. Designed frequency auto recovering antenna is conformed to be recovered within a few seconds when the resonant frequency and impedance are shifted by the approach of other objects such as hand, metal plate, dielectric and so on. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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