A method and an apparatus (300) for generating corrected quadrature phase
signal pairs in a communication device are provided. The apparatus (300)
includes a quadrature phase generator (310), programmable delay elements
(320, 330) and a control circuit (360). The programmable delay elements
(320, 330) receive a quadrature phase signal pair (signals I 312 and Q
314) from the quadrature phase generator (310). The control circuit (360)
generates a control signal (362) based on outputs (325, 335) of the
programmable delay elements (320, 330). The control signal (362)
configures the programmable delay elements (320, 330). The programmable
delay elements (320, 330) are configured to adjust delay between the
signals I (312) and Q (314). The programmable delay elements (320, 330)
are also used to adjust duty cycle for the quadrature phase signal pair
to provide the corrected quadrature phase signal pair.