Characteristics of an area-variable varactor diode

Author

Kim, Dong-Wook ; Lee, Jae-Jin ; Kwon, Young-Se ; Hong, Song-Cheol

Author_Institution

Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol., Taejon, South Korea

Volume

44

Issue

11

fYear

1996

fDate

11/1/1996 12:00:00 AM

Firstpage

2053

Lastpage

2057

Abstract

Photoresponses and microwave characteristics of an area-variable varactor diode are investigated in the frequency range of 1-7 GHz. The on/off ratio of the capacitance as large as 18.5 at 1 GHz is demonstrated and it is shown that the ratio strongly depends upon the access resistance between the cathode and the floating contacts. The capacitance of the diode is significantly altered by optical illuminations. The change increases nonlinearly with the input light power and the maximum value of 450% is achieved at 1 GHz with 1045 nW light power. These microwave and optical characteristics are described with a simple equivalent circuit model

Keywords

capacitance; equivalent circuits; microwave diodes; semiconductor device models; varactors; 1 to 7 GHz; 1045 nW; access resistance; area-variable varactor diode; capacitance; equivalent circuit model; input light power; microwave characteristics; on/off ratio; optical illumination; photoresponses; Anodes; Capacitance; Cathodes; Equivalent circuits; Frequency; Nonlinear optics; Optical control; Semiconductor diodes; Varactors; Voltage-controlled oscillators;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.543962

Filename

543962