Title :
A Reflection-Type Biphase Modulator with Balanced Loads
Author :
Ciccognani, Walter ; Paolo, Franco Di ; Ferrari, Mauro ; Giannini, Franco ; Limiti, Ernesto
Author_Institution :
Dipt. di Ing. Elettron., Univ. degli Studi di Roma Tor Vergata, Rome
Abstract :
In this contribution a new balanced biphase modulator topology is presented. The new biphase modulator allows the reduction of the resulting chip area occupation by using 3 couplers only, in contrast with traditional reflection-type balanced biphase modulators with 4 couplers, and exhibiting comparable performances. A 45-65 GHz test vehicle adopting the proposed topology has been designed and realised in monolithic form in 70 nm mHEMT technology, resulting in a 1.8 times 1 mm2 die size. The novel topology and the resulting measured performances of the test vehicle are described in the following.
Keywords :
HEMT integrated circuits; field effect MIMIC; integrated circuit design; integrated circuit testing; millimetre wave couplers; modulators; network topology; 2D EM simulation; MMIC; balanced biphase modulator topology; balanced loads; frequency 45 GHz to 65 GHz; mHEMT technology; reflection-type biphase modulator; size 70 nm; Attenuators; Couplers; FETs; Phase shifters; Reflection; Testing; Topology; Vehicles; Virtual manufacturing; Voltage control;
Conference_Titel :
Microwave Integrated Circuit Conference, 2008. EuMIC 2008. European
Conference_Location :
Amsterdam
Print_ISBN :
978-2-87487-007-1
DOI :
10.1109/EMICC.2008.4772297