Sequans Communications Sa

Martin Wiezell

Jonas Jonsson

Peter Olofsson

Ali Reza Bastami

An on-chip balun comprising a primary side, a secondary side, and an integrated notch filter.

On-chip balun

A duty cycle measuring circuit, the circuit comprising a synchronizer and a measurer, the synchronizer arranged such that when a signal to be measured comprising pulses having a pulse width and a pulse period is input to the synchronizer, synchronizing signals corresponding to each of pulse rising edge, pulse falling edge, pulse period start and pulse period end are output from the synchronizer, each synchronizing signal comprising a rising or falling edge, wherein the synchronizing signal outputs from the synchronizer are input to the measurer, and wherein the measurer is arranged to provide two measurement outputs based on the synchronizing signal inputs from the synchronizer, the measurement outputs comprising a first measurement output signal indicative of a pulse period measurement of the signal to be measured and a second measurement output signal indicative of a pulse width measurement of the signal to be measured.

Duty cycle estimation

A phase locked loop comprising a time to digital converter and a fractional-n feedback loop, the PLL being configurable by a phase compensator module to reduce the dynamic range of the TDC required to maintain PLL performance.

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Colombes, France

Martin Wiezell