Compensating Digital Attenuator Differential Phase Shift

Author

Ciccognani, Walter ; Giannini, Franco ; Limiti, Ernesto ; Longhi, Patricke

Author_Institution

Dept. of Electron. Eng., Univ. Roma Tor Vergata, Rome

fYear

2008

fDate

23-24 April 2008

Firstpage

1

Lastpage

4

Abstract

Controlled attenuators are key elements in a phased array´s beam forming network and generally in all those systems requiring accurate control of the RF signal´s amplitude and phase. Therefore the realisation of constant- phase digital attenuators is essential to obtain advanced system performance. A reactive element has been inserted in the traditional T topology digital attenuator to obtain equiphase condition and design equations have been inferred for optimum design. A MMIC X-Band 5-BIT constant-phase attenuator system has been designed and realised as a test vehicle for the proposed methodology.

Keywords

MMIC phase shifters; attenuators; digital integrated circuits; phase control; MMIC X-Band 5-bit constant-phase attenuator system; RF signal amplitude control; RF signal phase control; controlled attenuators; design equations; digital attenuator differential phase shift; equiphase condition; frequency 8 GHz to 12 GHz; phased array´s beam forming network; reactive element; test vehicle; traditional T topology digital attenuator; Attenuators; Control systems; Equations; MMICs; Network topology; Phased arrays; RF signals; Radio frequency; System performance; System testing; Constant phase digital attenuator; MMIC; Phased Array; X-Band;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Techniques, 2008. COMITE 2008. 14th Conference on

Conference_Location

Prague

Print_ISBN

978-1-4244-2137-4

Electronic_ISBN

978-1-4244-2138-1

Type

conf

DOI

10.1109/COMITE.2008.4569947

Filename

4569947