Helical antenna for wireless microphone and method for the same
First Claim
1. An antenna assembly for a wireless microphone, comprising:
- a helical antenna including a feed point, a first antenna structure sized and shaped for optimal operation in a first frequency band, and a second antenna structure sized and shaped for optimal operation in a second frequency band that does not overlap with the first frequency band; and
at least one contact pin coupling the feed point to the wireless microphone,wherein each of the first antenna structure and the second antenna structure includes a fixed end and an opposing free end, the fixed ends being joined together adjacent to the feed point, and the free ends radiating out independently from the feed point such that the free end of the first antenna structure is spatially separated from the free end of the second antenna structure.
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Accused Products
Abstract
Embodiments include an antenna assembly for a wireless microphone, comprising a helical antenna including a feed point and at least one contact pin coupling the feed point to the wireless microphone. The helical antenna is configured for operation in first and second frequency bands. Embodiments also include a wireless microphone comprising a main body having top and bottom ends and an antenna assembly coupled to the bottom end. The antenna assembly comprises a helical antenna configured to transmit and receive wireless signals, an inner core configured to support the helical antenna on an outer surface of the inner core, and an outer shell formed over the inner core and the helical antenna. Embodiments further include a method of manufacturing an antenna assembly for a wireless microphone using a first manufacturing process to form a core unit of the antenna assembly and a second manufacturing process to form an overmold.
21 Citations
20 Claims
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1. An antenna assembly for a wireless microphone, comprising:
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a helical antenna including a feed point, a first antenna structure sized and shaped for optimal operation in a first frequency band, and a second antenna structure sized and shaped for optimal operation in a second frequency band that does not overlap with the first frequency band; and at least one contact pin coupling the feed point to the wireless microphone, wherein each of the first antenna structure and the second antenna structure includes a fixed end and an opposing free end, the fixed ends being joined together adjacent to the feed point, and the free ends radiating out independently from the feed point such that the free end of the first antenna structure is spatially separated from the free end of the second antenna structure. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A wireless microphone, comprising:
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a main body having a top end and a bottom end; and an integrated, one-piece antenna assembly coupled to the bottom end of the main body, the antenna assembly comprising; a helical antenna configured to transmit and receive wireless signals; an inner core supporting the helical antenna on an outer surface of the inner core; and an outer shell formed around the inner core and the helical antenna using an overmolding process, such that the outer shell is fixedly coupled to the inner core and the helical antenna, wherein the helical antenna includes a feed point, a first antenna structure, and a second antenna structure, each structure comprising a fixed end and an opposing free end, the fixed ends being joined together adjacent to the feed point, and the free ends radiating out independently from the feed point to form a spatially separated arrangement. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. A method of manufacturing an antenna assembly for a wireless microphone, the method comprising:
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creating a core unit with a hollow body and a closed bottom end using a first manufacturing process; coupling a feed end of an antenna element to the core unit, wherein the antenna element includes a first antenna structure and a second antenna structure, each structure comprising a fixed end and an opposing free end, the fixed ends being joined together adjacent to the feed end of the antenna element, and the free ends radiating out independently from the feed end to form a spatially separated arrangement; wrapping the antenna element around the core unit to form a helical structure with the free end of the first antenna structure positioned adjacent to the bottom end of the core unit; and creating an overmold around the antenna element and the core unit using a second manufacturing process, such that the overmold is fixedly coupled to the core unit and antenna element. - View Dependent Claims (17, 18, 19, 20)
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Specification