System architecture and method for dynamically optimized impedance matching for antenna feeds
AssigneeRockwell Collins, Inc.
InventorsOrion D. Davies, Alexander B. Kozyrev
Life of this patent
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Abstract
A communication system applies impedance matching to an antenna specific to individual samples of a transmit signal. The system samples a signal and identifies the peak frequency content of each sample. Based on the peak frequency content, the system identifies an impedance match for a given antenna that provides the greatest energy transmission. The sampled portion of the signal is delayed to accommodate processing time to determine the impedance match and control settings. Control settings may be applied via discrete digital circuitry or continuous analog circuitry.
Claims20
An antenna comprising:
- at least one processor in data communication with a memory storing processor executable code for configuring the at least one processor to:
- receive a transmission signal;
- periodically sample the transmission signal in a transmit path prior to radiation, the sampling being performed for each carrier wave cycle, and over a time window shorter than one period of the carrier wave;
- identify peak frequency content in each sample;
- determine an impedance match based on the identified peak frequency content;
- and
- apply the impedance match to an antenna.
A method comprising:
- receiving a transmission signal;
- periodically sampling the transmission signal in a transmit path prior to radiation, the sampling being performed for each carrier wave cycle, and over a time window shorter than one period of the carrier wave;
- identifying peak frequency content in each sample;
- determining an impedance match based on the identified peak frequency content;
- applying the impedance match to an antenna for each sample;
- and
- synchronizing control updates to the arrival of each sample at the antenna.
A communication system comprising:
- an antenna;
- a coupler configured to provide a coupled transmission signal to at least one processor while passing a primary transmission signal along a transmit path;
- and
- at least one processor in data communication with the antenna, the coupler, and a memory storing processor executable code for configuring the at least one processor to:
- receive a coupled transmission signal;
- periodically sample the coupled transmission signal in a transmit path prior to radiation, the sampling being performed for each carrier wave cycle, and over a time window shorter than one period of the carrier wave;
- identify peak frequency content in each sample;
- determine an impedance match based on the identified peak frequency content;
- apply the impedance match to the antenna;
- and
- synchronize control updates so that the impedance match is applied during transmission of the corresponding sample.
Dependencies are inferred from the claim text.