Antenna structures and methods thereof for determining a frequency offset based on a measured data
First Claim
1. A method, comprising:
- determining, by a circuit, a magnitude difference between a first signal supplied to an antenna and a second signal radiated by the antenna;
determining, by the circuit, a phase difference between the first signal supplied to the antenna and the second signal radiated by the antenna;
measuring, by the circuit, a change in reactance of the antenna;
detecting, by the circuit, an offset in an operating frequency of the antenna based on one of the magnitude difference, the phase difference, the change in reactance, or any combination thereof; and
adjusting, by the circuit, a resonant frequency of the antenna to mitigate the offset in the operating frequency of the antenna.
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Accused Products
Abstract
A system that incorporates the subject disclosure may include, for example, a circuit for determining a magnitude difference between a first signal supplied to an antenna and a second signal radiated by the antenna, determining a phase difference between the first signal supplied to the antenna and the second signal radiated by the antenna, measuring a change in reactance of an antenna, detecting an offset in an operating frequency of the antenna based on one of the magnitude difference, the phase difference, the change in reactance, or any combination thereof, and adjusting a resonant frequency of the antenna to mitigate the offset in the operating frequency of the antenna. Other embodiments are disclosed.
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Citations
25 Claims
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1. A method, comprising:
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determining, by a circuit, a magnitude difference between a first signal supplied to an antenna and a second signal radiated by the antenna; determining, by the circuit, a phase difference between the first signal supplied to the antenna and the second signal radiated by the antenna; measuring, by the circuit, a change in reactance of the antenna; detecting, by the circuit, an offset in an operating frequency of the antenna based on one of the magnitude difference, the phase difference, the change in reactance, or any combination thereof; and adjusting, by the circuit, a resonant frequency of the antenna to mitigate the offset in the operating frequency of the antenna. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An antenna structure, comprising:
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a first antenna element; a first aperture tuner for adjusting a resonant frequency of the antenna element; a probe; a reactive sensor; and a first near field sensor for sensing radiated energy from the first antenna element, wherein the first near field sensor and the first aperture tuner are coupled to a circuit that performs operations comprising; measuring from the first near field sensor a first phase and a first magnitude of radiated energy by the first antenna element; measuring from the probe a second phase and a second magnitude of a first signal supplied to the first antenna element; comparing the first and the second phases to generate a phase differential; comparing the first and the second magnitudes to generate a magnitude differential; measuring a change in reactance of the first antenna; detecting a change in an operating frequency of the first antenna element based on one of the phase differential, the magnitude differential, the change in reactance of the antenna, or any combination thereof; and causing the first aperture tuner to adjust the resonant frequency of the first antenna element according to the change in the operating frequency of the first antenna. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A communication device, comprising:
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an antenna structure; a near field sensor; a probe; a reactive sensor; and a circuit coupled to the near field sensor, probe and the reactive sensor, wherein the circuit performs operations comprising; measuring from the near field sensor a first signal representing radiated energy from the antenna structure; measuring from the probe a second signal supplied to the antenna structure; measuring from the reactive sensor a reactive load of the antenna structure; determining a phase differential from a first phase of the first signal and a second phase of the second signal; determining a magnitude differential from a first magnitude of the first signal and a second magnitude of the second signal; determining a change in reactance of the antenna structure from the reactive load; detecting a frequency offset of the antenna structure based on the phase differential, the magnitude differential, the change in reactance, or any combination thereof; and adjusting an operating frequency of the antenna structure to mitigate the frequency offset. - View Dependent Claims (22, 23, 24, 25)
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Specification