Transmitter calibration system
AssigneeImagine Communications Corp.
InventorsWilliam T. Chizevsky, Tracee Worel
Life of this patent
Estimating the term…
Abstract
Systems and methods are provided for calibrating a transmitter system. A directional coupler is configured to provide a first signal representative of a forward power of an RF signal and a second signal representative of a reflected power of the RF signal. A splitting assembly is configured to generate respective third and fourth signals, each representative of the forward power, from the first signal. A switching assembly is configured to select between the second signal and the third signal. A system control is configured to determine an associated power of each of the fourth signal and a signal provided by the switching assembly.
Claims11
A transmitter system comprising:
- a directional coupler assembly configured to provide a first signal representative of a forward power of an RF signal and a second signal representative of a reflected power of the RF signal;
- a splitting assembly configured to generate respective third and fourth signals, each representative of the forward power, from the first signal;
- a switching assembly configured to select between the second signal and the third signal;
- and
- a system control configured to determine an associated power of each of the fourth signal and a signal provided by the switching assembly.
A transmitter system comprising:
- a directional coupler assembly, implemented as a printed circuit board and comprising:
- a directional coupler configured to provide a first signal representative of a forward power of an RF signal at a first port and a second signal representative of a reflected power of the RF signal at a second port;
- a first fixed attenuator operatively connected to the first port;
- and
- a second fixed attenuator operatively connected to the second port, the first and second attenuators being configured to provide a same amount of relative decrease in respective signal powers of the first and second signals;
- a splitting assembly configured to generate respective third and fourth signals, each representative of the forward power, from the first signal;
- a switching assembly configured to select between the second signal and the third signal;
- and
- a system control configured to determine an associated power of each of the fourth signal and a signal provided by the switching assembly, the system control comprising:
- a first root mean square (RMS) detector to determine an RMS power of the fourth signal;
- a second root mean square (RMS) detector to determine an RMS power of the signal provided by the switching assembly;
- a microcontroller;
- a first analog-to-digital converter to provide a first digital value from the RMS power of the fourth signal to the microcontroller;
- and
- a second analog-to-digital converter to provide a second digital value from the RMS power of the signal provided by the switching assembly to the microcontroller;
- wherein the microcontroller is configured to correct each of the first digital value and the second digital value for a frequency response of the directional coupler assembly.
Dependencies are inferred from the claim text.