X-band voltage variable attenuators using PIN diodes

Author

Shireesha, C. ; Sadhu, Rahul ; Harikumar, R.

Author_Institution

Bharat Electron. Ltd., Bangalore, India

fYear

2014

fDate

15-17 Dec. 2014

Firstpage

323

Lastpage

326

Abstract

We present the design of PIN diode based medium-power Voltage Variable Attenuators realized on microstrip in the frequency range of 9.1-9.6 GHz. These reflective variable attenuators have a topology based on 90° hybrid couplers. Single hybrid coupled attenuators can be used for broadband operation. A double hybrid coupler design eliminates the ripple response in the high attenuation state, thereby increasing the dynamic range. Both the approaches have been presented in this paper. They not only exhibit good linearity, but also have a good VSWR match over the full frequency range and over all the attenuation levels.

Keywords

microstrip components; p-i-n diodes; waveguide attenuators; waveguide couplers; 90° hybrid couplers; PIN diode; VSWR match; X-band voltage variable attenuators; broadband operation; double hybrid coupler design; dynamic range; frequency 9.1 GHz to 9.6 GHz; high attenuation state; linearity; medium-power voltage variable attenuators; microstrip; reflective variable attenuators; ripple response; single hybrid coupled attenuators; Attenuation; Attenuators; Couplers; Microwave circuits; PIN photodiodes; Radio frequency; Resistance; Branchline Coupler; PIN diodes; Quadrature hybrid; Voltage Variable Attenuator (VVA); X-band; dynamic range;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave and RF Conference (IMaRC), 2014 IEEE International

Conference_Location

Bangalore

Type

conf

DOI

10.1109/IMaRC.2014.7039052

Filename

7039052