Discrete-type 24GHz SPDT FET Switch for Millimeter-wave WiCoPT

被引：0

作者：

Hojo, Hiroya ^{[1
]}

Ishizaki, Toshio ^{[1
]}

机构：

[1] Ryukoku Univ, Dept Elect & Informat, Otsu, Shiga 5202194, Japan

来源：

2015 IEEE INTERNATIONAL MEETING FOR FUTURE OF ELECTRON DEVICES, KANSAI (IMFEDK) | 2015年

关键词：

SPDT switch; WiCoPT; 24GHz; GaAs HJ-FET; Discrete transistor; Plastic package;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

SPDT switch for 24GHz WiCoPT system was developed. GaAs HJ-FET molded in plastic package is used for cost reduction. In this case, electrical length between drain and source, and parasitic capacitance of package cannot be neglected. To solve this problem, quarter-wavelength transmission line is inserted in series to the transistor between output port and ground port. Although switching logic is reversed, effects of the length and the parasitic capacitance are included in the transmission line. Experimental SPDT switch was fabricated to compare the performance with that of conventional one. Insertion loss of 2.9dB, attenuation of 30.5dB and isolation of 26.5dB were obtained. Amazingly, insertion loss was improved by 1.4dB and attenuation was improved by 21dB. Thus, the effectiveness of the proposed circuit was confirmed.

引用

页数：2