Closed loop aperture tunable antenna
AssigneeFuturewei Technologies, Inc.
InventorsPing Shi, Yonghua Wei
Life of this patent
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Abstract
An apparatus comprises a radio frequency (RF) antenna circuit; an antenna aperture tuning circuit; an antenna impedance measurement circuit; and a processor circuit electrically coupled to the tunable antenna aperture circuit and the impedance measurement circuit. The processor circuit is configured to: set the antenna aperture tuning circuit to an antenna aperture tuning state according to one or more parameters of an RF communication network; initiate an antenna impedance measurement; and change the antenna aperture tuning state to an antenna aperture tuning state indicated by the antenna impedance.
Claims24
An apparatus comprising:
- a radio frequency (RF) antenna circuit;
- an antenna aperture tuning circuit electrically coupled to the RF antenna circuit;
- an antenna impedance measurement circuit;
- a processor electrically coupled to the antenna aperture tuning circuit and antenna impedance measurement circuit, wherein the processor is configured to:
- obtain an antenna impedance measurement from the antenna impedance measurement circuit when the antenna aperture tuning circuit is set to a first antenna aperture tuning state;
- determine a different second antenna aperture tuning state according to the first antenna aperture tuning state and the antenna impedance measurement using a lookup table;
- and
- set the antenna aperture tuning circuit to the second antenna aperture tuning state.
An integrated circuit chip, the chip comprising:
- a memory and at least one processor, wherein
- the memory is configured to store a computer program;
- the at least one processor is configured to invoke the computer program and execute the computer program to cause the chip to:
- obtain an antenna impedance measurement when an antenna aperture tuning circuit is set to a first antenna aperture tuning state;
- determine a different second antenna aperture tuning state according to the first antenna aperture tuning state and the antenna impedance measurement using a lookup table;
- and
- set the antenna aperture tuning circuit to the second antenna aperture tuning state from the first antenna aperture tuning state.
A non-transitory computer readable storage medium including instructions, that when performed by processing circuitry of an apparatus, cause the apparatus to perform acts comprising:
- obtain an antenna impedance measurement when an antenna aperture tuning circuit is working on a first antenna aperture tuning state;
- determine a different second antenna aperture tuning state according to the first antenna aperture tuning state and the antenna impedance measurement using a lookup table;
- and
- set the antenna aperture tuning circuit to the second antenna aperture tuning state from the first antenna aperture tuning state.
A method of operating radio frequency (RF) circuitry, the method comprising:
- obtaining an antenna impedance measurement when an antenna aperture tuning circuit is working on a first antenna aperture tuning state;
- determining a different second antenna aperture tuning state according to the first antenna aperture tuning state and the antenna impedance measurement using a lookup table;
- setting the antenna aperture tuning circuit to the second antenna aperture tuning state from the first antenna aperture tuning state.
Dependencies are inferred from the claim text.