Imec Vzw

Yang Zhang

Pierre Wambacq

Jan Craninckx

Giuseppe Gramegna

Guiseppe Gramegna

A phased array transceiver element comprises a local oscillator stage for generating beamformed in-phase and quadrature local oscillator signals, the local oscillator stage comprising a phase shifter connectable to a reference frequency source and applying a first phase shift; a primary frequency multiplier input from the phase shifter and applying a primary frequency multiplication factor; a phase-splitting arrangement input from the primary frequency multiplier and having a first output and a second output, the phase-splitting arrangement applying a second phase shift at the first output and a third phase shift at the second output; a first secondary frequency multiplier input from the first output of the phase-splitting arrangement, having an output for the in-phase local oscillator signal, and applying a secondary frequency multiplication factor; and a second secondary frequency multiplier input from the second output of the phase-splitting arrangement, having an output for the quadrature local oscillator signal, and applying the secondary frequency multiplication factor.

Phased array transceiver element

An RF impedance measurement circuit includes a sensing capacitor connectable with an RF signal path; a first amplitude detector and a first frequency divider, each coupled, with the measurement circuit in operation, to the RF signal path at a first terminal of the sensing capacitor; a second amplitude detector and a second frequency divider, each coupled, with the measurement circuit in operation, to a second terminal of the sensing capacitor; and a phase detection circuit connected to an output of the first frequency divider and to an output of the second frequency divider.

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Heverlee, Belgium

Yang Zhang