Patent ID: 7990149

Claim:
Hybrid circuitry comprising: a hybrid circuit or splitter that splits a radio frequency drive signal into two component drive signals; and additional circuitry including switches operable to couple one or both of the two component drive signals with a quadrature coil having an I channel input port and a Q channel input port to drive the quadrature coil; wherein the switches are configurable to drive the quadrature coil in a selected one of at least two coil modes selected from a group consisting of (i) a linear I-channel mode in which the I channel input port is driven by one of the two component drive signals without driving the Q channel input port, (ii) a linear Q-channel mode in which the Q channel input port is driven by one of the two component drive signals without driving the I channel input port, (iii) a quadrature mode in which the I channel input port is driven by one of the two component drive signals and the Q channel input port is driven by the other of the two component drive signals with a selected positive phase difference between the I and Q channels, and (iv) an anti-quadrature mode in which the I channel input port is driven by one of the two component drive signals and the Q channel input port is driven by the other of the two component drive signals with a selected negative phase difference between the I and Q channels.