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AssigneeEtenna Corporation
InventorsJames D. Lilly, William E. McKinzie III, David T. Auckland, Andrew Humen JR.
Estimating the term…
An antenna consisting of a thin strip bent-wire monopole disposed on an artificial magnetic conductor (AMC) is loaded at the end opposite to the feed point with a distributed or lumped capacitance to achieve an electrically small antenna for use in handheld wireless devices. The capacitive load reduces the length of the antenna to smaller than one-quarter of a wavelength at a given frequency of operation without suffering a substantial loss of efficiency. This results in an easier integration into portable devices, greater radiation efficiency than other loaded antenna approaches and longer battery life in portable devices, and lower cost than use of a chip inductor.
An antenna comprising:
An antenna comprising:
A method of reducing a length of a bent-wire monopole disposed on an artificial magnetic conductor (AMC), the method comprising establishing a capacitance in excess of that of a per unit length capacitance of the bent-wire monopole between the bent-wire monopole and ground and establishing that the capacitance is disposed more distal to a feed of the bent-wire monopole than to an opposing end of the bent-wire monopole.
Dependencies are inferred from the claim text.