Method and system for dynamic control of output power of a leaky wave antenna
First Claim
1. A method for communication by a wireless device including at least one leaky wave antenna integrated in a support structure and including a resonant cavity formed by a first planar reflective surface and a second planar reflective surface having a reflectivity lower than the first planar reflective surface, the method comprising:
- causing the at least one leaky wave antenna to transmit an RF signal at a desired frequency by selecting one feed point from a plurality of feed points of the at least one leaky wave antenna, each of the plurality of feed points being disposed within the resonant cavity at a different distance from the first planar reflective surface to set a different impedance, the selected one feed point determining an impedance of the at least one leaky wave antenna; and
dynamically adjusting one or more impedances coupled to the leaky wave antenna and to a power amplifier that amplifies said RF signal, by selecting individually addressable capacitor arrays and switches that bypass inductors to match the impedance of the at least one leaky wave antenna.
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Accused Products
Abstract
Methods and systems for dynamic control of output power of a leaky wave antenna (LWA) are disclosed and may include configuring one or more LWAs in a wireless device to transmit RF signals at a desired frequency. The LWAs may be integrated in support structures, including an integrated circuit, an integrated circuit package, and/or a printed circuit board. Impedances that are coupled to the LWAs and to a power amplifier enabled to amplify the RF signals may be dynamically configured. A resonant frequency of the LWAs may be tuned, which may be configured to transmit the RF signals at a desired angle from a surface of the support structure. The LWAs may include microstrip or coplanar waveguides where a cavity height of the LWAs may be configured by controlling spacing between conductive lines in the waveguides. The impedances may include capacitor arrays and/or inductors in the support structures.
124 Citations
20 Claims
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1. A method for communication by a wireless device including at least one leaky wave antenna integrated in a support structure and including a resonant cavity formed by a first planar reflective surface and a second planar reflective surface having a reflectivity lower than the first planar reflective surface, the method comprising:
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causing the at least one leaky wave antenna to transmit an RF signal at a desired frequency by selecting one feed point from a plurality of feed points of the at least one leaky wave antenna, each of the plurality of feed points being disposed within the resonant cavity at a different distance from the first planar reflective surface to set a different impedance, the selected one feed point determining an impedance of the at least one leaky wave antenna; and dynamically adjusting one or more impedances coupled to the leaky wave antenna and to a power amplifier that amplifies said RF signal, by selecting individually addressable capacitor arrays and switches that bypass inductors to match the impedance of the at least one leaky wave antenna. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A system for enabling communication, the system comprising:
circuitry including at least one leaky wave antenna integrated in a support structure and including a resonant cavity formed by a first planar reflective surface and a second planar reflective surface having a reflectivity lower than the first planar reflective surface, the circuitry configured to; cause the at least one leaky wave antenna to transmit an RF signal at a desired frequency by selecting one feed point from a plurality of feed points of the at least one leaky wave antenna, each of the plurality of feed points being disposed within the resonant cavity at a different distance from the first planar reflective surface to set a different impedance, the selected one feed point determining an impedance of the at least one leaky wave antenna; dynamically adjust one or more impedances coupled to the at least one leaky wave antenna and to a power amplifier that amplifies said RF signal, by selecting individually addressable capacitor arrays and switches that bypass inductors to match the impedance of the at least one leaky wave antenna. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
Specification