Patent ID: 7302461

Claim:
A delay element comprising: an amplifier adapted to receive input signals; a filter coupled to the amplifier and adapted to provide a variable delay, wherein the filter comprises: a first inductor having a first terminal and a second terminal, the first terminal coupled to a first output terminal of the amplifier and the second terminal providing a first output signal of the delay element; a second inductor having a third terminal and a fourth terminal, the third terminal coupled to a second output terminal of the amplifier and the fourth terminal providing a second output signal of the delay element; at least a first capacitor coupled between the first output terminal of the amplifier and the fourth terminal of the second inductor, wherein a capacitance of the at least first capacitor is variable; and at least a second capacitor coupled between the second output terminal of the amplifier and the second terminal of the first inductor, wherein a capacitance of the at least second capacitor is variable.