Phased array transmitter
AssigneeQUALCOMM Incorporated
InventorMuhammad Hassan
Life of this patent
Estimating the term…
Abstract
A phase shifter including a quadrature generator configured to generate an in phase (I) signal and a quadrature (Q) signal from an input signal; an in phase vector modulator (VM_I) configured to receive the I signal and a quadrature vector modulator (VM_Q) configured to receive the Q signal; and an auxiliary VM_I connected to the VM_I and an auxiliary VM_Q connected to the VM_Q, the auxiliary VM_I configured to receive the I signal, the auxiliary VM_Q configured to receive the Q signal, the auxiliary VM_I and the auxiliary VM_Q configured to receive a bias signal and configured to adjust an in phase amplitude output of the VM_I and a quadrature amplitude output of the VM_Q responsive to the bias signal.
Claims20
A phase shifter, comprising:
- a quadrature generator configured to generate an in phase (I) signal and a quadrature (Q) signal from an input signal;
- an in phase vector modulator (VM_I) configured to receive the I signal and a quadrature vector modulator (VM_Q) configured to receive the Q signal;
- and
- an auxiliary VM_I connected to the VM_I and an auxiliary VM_Q connected to the VM_Q, the auxiliary VM_I configured to receive the I signal, the auxiliary VM_Q configured to receive the Q signal, the auxiliary VM_I and the auxiliary VM_Q configured to receive a bias signal at respective inputs of the auxiliary VM_I and the auxiliary VM_Q and configured to adjust an in phase amplitude output of the VM_I and a quadrature amplitude output of the VM_Q responsive to the bias signal.
A method for signal transmission, comprising:
- generating an in phase (I) amplitude and a quadrature (Q) amplitude based on an input signal;
- generating an auxiliary in phase amplitude and an auxiliary quadrature amplitude based on the input signal and a gain signal, the gain signal corresponding to the auxiliary in phase amplitude and the auxiliary quadrature amplitude;
- and
- adjusting the in phase amplitude using the auxiliary in phase amplitude and adjusting the quadrature amplitude using the auxiliary quadrature amplitude.
A device, comprising:
- means for generating an in phase (I) amplitude and a quadrature (Q) amplitude based on an input signal;
- means for generating an auxiliary in phase amplitude and an auxiliary quadrature amplitude based on the input signal and a gain signal, the gain signal corresponding to the auxiliary in phase amplitude and the auxiliary quadrature amplitude;
- and
- means for adjusting the in phase amplitude using the auxiliary in phase amplitude and adjusting the quadrature amplitude using the auxiliary quadrature amplitude.
Dependencies are inferred from the claim text.