TY - GEN
T1 - A 5 GHz BiCMOS I/Q VCO with 360° variable phase outputs using the vector sum method
AU - Opperman, Tjaart A.K.
AU - Sinha, Saurabh
PY - 2008
Y1 - 2008
N2 - A 5 GHz In-phase/Quadrature (I/Q) voltage controlled oscillator (VCO) with multiple independently tunable phase outputs is presented. The VCO is realized using an LC oscillator with a ring structure and has a tuning range of between 4.6 and 5.3 GHz. The variable phase shift is achieved by varying the amplitudes of the two quadrature signals independently and then combining these signals together. Using multiple Gilbert cells as variable gain amplifiers (VGAs), multiple tunable phase outputs are achieved using only a single coupled I/Q VCO. The entire circuit is designed using a 3.3V SiGe BiCMOS process. This VCO can be used as a phase shifter in adaptive phase array antenna systems, whereby the beam is formed by controlling the phase of individual antenna elements.
AB - A 5 GHz In-phase/Quadrature (I/Q) voltage controlled oscillator (VCO) with multiple independently tunable phase outputs is presented. The VCO is realized using an LC oscillator with a ring structure and has a tuning range of between 4.6 and 5.3 GHz. The variable phase shift is achieved by varying the amplitudes of the two quadrature signals independently and then combining these signals together. Using multiple Gilbert cells as variable gain amplifiers (VGAs), multiple tunable phase outputs are achieved using only a single coupled I/Q VCO. The entire circuit is designed using a 3.3V SiGe BiCMOS process. This VCO can be used as a phase shifter in adaptive phase array antenna systems, whereby the beam is formed by controlling the phase of individual antenna elements.
KW - Bicmos
KW - Integrated circuit
KW - Phased array antenna
KW - Quadrature VCO
KW - Variable gain amplifier
KW - Vector sum
UR - http://www.scopus.com/inward/record.url?scp=69949141551&partnerID=8YFLogxK
U2 - 10.1109/PIMRC.2008.4699403
DO - 10.1109/PIMRC.2008.4699403
M3 - Conference contribution
AN - SCOPUS:69949141551
SN - 9781424426447
T3 - IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC
BT - 2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2008
T2 - 2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2008
Y2 - 15 September 2008 through 18 September 2008
ER -