An x-band 6-bit active phase shifter

Kibaroğlu, Kerim Kemal and Özeren, Emre and Kalyoncu, İlker and Çalışkan, Can and Kayahan, Hüseyin and Gürbüz, Yaşar (2014) An x-band 6-bit active phase shifter. In: 14th IEEE Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems (SiRF), Newport Beach, CA

[thumbnail of An X-band 6-Bit Active Phase Shifter] PDF (An X-band 6-Bit Active Phase Shifter)

Download (567kB)


This paper presents a 6-bit active phase shifter using a new vector-sum method for X-band (8-12 GHz) phased arrays in 0.13 mu m SiGe BiCMOS process. An RC filter is used to generate two orthogonal vectors which are then fed into four VGAs, two using the common-base and two using the common-emitter topology. This generates 4 vectors of 0 degrees, 90 degrees, 180 degrees and 270 degrees which are scaled and added by varying the gains of the VGAs to generate any phase between 0-360 degrees. The gains of the VGAs are adjusted with analog voltage control using the current-steering method. The outputs of the VGAs are connected together with a common load in order to add the vectors in current-domain. The phase shifter achieves < 5.6 degrees RMS phase error over 8-12 GHz and < 3.1 degrees RMS phase error over 9-11 GHz. The phase shifter has a power consumption of 16.6 mW from a 2V supply. The chip size is 850 mu m x 532 mu m including the probing pads. These performance parameters are comparable with the state of the art of the technology in literature.
Item Type: Papers in Conference Proceedings
Uncontrolled Keywords: Active phase shifter; vector modulator; phased array; X-band; SiGe BiCMOS; T/R module
Divisions: Faculty of Engineering and Natural Sciences > Academic programs > Electronics
Faculty of Engineering and Natural Sciences
Depositing User: Yaşar Gürbüz
Date Deposited: 20 Dec 2015 22:31
Last Modified: 26 Apr 2022 09:19

Actions (login required)

View Item
View Item