Antennas having multiple resonant frequency bands and wireless terminals incorporating the same
AssigneeEricsson Inc.
InventorHoward E. Holshouser
Life of this patent
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Abstract
Antennas for a communications device and wireless terminals are provided. A conductive element is provided along with a ground assembly including a ground element coupled to the conductive element. The ground element has a first state and a second state. The first state provides a first resonant frequency band when the ground element is in a first relative position that is a first distance from the conductive element. The second state provides a second frequency band when the ground element is in a second relative position that is a second distance, different from the first distance, from the conductive element.
Claims38
An antenna for a communications device, comprising:
- a conductive element;
- and
- a ground assembly including a ground element coupled to the conductive element, the ground element having a first state and a second state, the first state providing a first resonant frequency band when the ground element is in a first relative position a first distance from the conductive element and the second state providing a second frequency band when the ground element is in a second relative position a second distance, different from the first distance, from the conductive element.
An antenna for a communications device, comprising:
- an inverted-F conductive element comprising first and second branches;
- a ground assembly including a ground element coupled to the inverted-F conductive element operative to provide a first state and a second state, the first state providing a first resonant frequency band based on the first branch of the inverted-F conductive element and a second resonant frequency band based on the second branch of the inverted-F conductive element when the ground element is in a first relative position a first distance from the inverted-F conductive element and the second state providing a third resonant frequency band based on the first branch of the inverted-F conductive element and a fourth resonant frequency band based on the second branch of the inverted-F conductive element when the ground element is in a second relative position a second distance, different from the first distance, from the inverted-F conductive element.
A wireless terminal, comprising:
- a housing;
- a receiver that receives wireless communications signals and/or a transmitter that transmits wireless communications signals positioned within the housing;
- a conductive element within the housing coupled to the receiver and/or transmitter;
- and
- a ground assembly including a ground element coupled to the conductive element, the ground element having a first state and a second state, the first state providing a first resonant frequency band when the ground element is in a first relative position a first distance from the conductive element and the second state providing a second frequency band when the ground element is in a second relative position a second distance, different from the first distance, from the conductive element.
Dependencies are inferred from the claim text.