| 순차적으로 전압 인가된 RF MEMS 스위치를 이용한 재구성 슬롯 안테나의 설계 |
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심준환, 윤동식, 박동국, 강인호, Jung-Chih Chiao |
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| Design of a Reconfigurable Slot Antenna using Sequentially Voltage-Applied RF MEMS Switches |
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Joon-Hwan Shim, Dong-Sik Yoon, Dong-Kook Park, In-Ho Kang, Jung-Chih Chiao |
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| Abstract |
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In this paper, we designed a reconfigurable slot antenna using sequentially voltage-applied RF MEMS switches. In order to obtain pull-in voltage and maximum stress of the MEMS switches, the switch structures in accordance with airgap height was analyzed by ANSYS simulation. A actuation voltage of MEMS switches can be determined by switch geometry and airgap height between a movable plate and a bottom plate. The designed lengths of MEMS switches were 240 ㎛, 320 ㎛, 400 ㎛, respectively and the airgap was 6 ㎛. The total size of the designed slot antenna was 10㎜×10㎜ and the slot length and width were 500 ㎛ and 200 ㎛, respectively. the length and size of the CPW feedline were 5 ㎜ and 30-80-30 ㎛, respectively. and the size of the CPW in the slot was 150-300-150 ㎛. The tuning of the resonant frequency of the proposed device is realized by varying the electrical length of the antenna, which is controlled by applying the DC bias voltages to the RF MEMS switches. The designed slot antenna has simulated fabricated and measured. |
| Key Words:
RF-MEMS 스위치;
MEMS;RF MEMS switch;Slot antenna;Reconfigurable antenna |
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