| Title |
A Study for DPDT Switch Design with Defected Ground Structure |
| Authors |
안가람(An Ka-Ram) ; 정명섭(Jeoung Myeung-Sub) ; 임재봉(Lim Jae-Bong) ; 조홍구(Cho Hong-Goo) ; 박준석(Park Jun-Seok) |
| Keywords |
DPDT ; Switch ; DGS ; Antiresonance Frequency ; Low Pass Filter |
| Abstract |
In this paper a DPDT(Double-Pole Double Through) switch with defected ground structure(DGS) is proposed. The equivalent circuit for the proposed switch structure is derived according to based on equivalent circuit of proposed DGS unit structure. The equivalent circuit parameters of DGS unit are extracted by using the circuit analysis method. The on/off operation of the proposed switch is obtained by varying the capacitance of the varactor diode at the defected ground plane. In the case of ON state, the insertion loss of the fabricated DPDT was shown under 1dB. And in OFF state, we found the rejection characteristic over 20dB at the designed frequency 2.45GHz. The experimental results show excellent insertion loss at on state and isolation at off state. |