Flip open antenna for a communication device

• US 5,995,052 A
• Filed: 05/15/1998
• Issued: 11/30/1999
• Est. Priority Date: 05/15/1998
• Status: Expired due to Term

• Current Assignee: Optis Cellular Technology LLC (Brevet Capital)
• Original Assignee: Ericsson, Inc. (Telefonaktiebolaget LM Ericsson)
• Inventors: Sadler, John T., Hayes, Gerard, Sadler, Robert A.
• Primary Examiner(s): Wong, Don
• Assistant Examiner(s): Malos, Jennifer H.
• Application Number:
  US09/080,074
• Time in Patent Office: 564 Days
• Field of Search: 343/702, 343/700 MS, 379/433, 379/434
• US Class Current: 343/702
• CPC Class Codes: H01Q 1/242 specially adapted for hand-held use
• CPC Class Codes: H01Q 1/245 with means for shaping the antenna pattern, e.g. in order to protect user against rf exposure
• CPC Class Codes: H01Q 1/362 for broadside radiating helical antennas
• CPC Class Codes: H01Q 5/357 using a single feed point

Abstract

An antenna for a communication device including a first flip having an antenna element and pivotally mounted on a housing to move from a closed position adjacent to the housing to an operational position angularly space from the housing. A second flip having a conductive element as a ground plane is pivotally mounted on the housing and moves between a closed position adjacent the housing and an open position angularly spaced from both the housing and the first flip. When the first and second flips are in the closed position, they cover the controls and no antenna is exposed on the exterior of the housing. In the operational position, the antenna element and the conductive element form an antenna optimally tuned to the frequency of the wireless network that is less subject to interference by the user.

Claims

1. An antenna for a hand-held communication device having a housing, said antenna comprising:

a first flip pivotally mounted on said housing for movement between a closed position adjacent to said housing and an operational position spaced from said housing, said first flip having an antenna element; and

a second flip pivotally mounted on said housing and moving from a closed position adjacent said housing and an operational position angularly spaced from both said housing and said first flip, said second flip having a conductive element opposite said antenna element forming a ground plane for said antenna.

2. An antenna in accordance with claim 1 wherein said first and second flip each have a top portion and a bottom portion, said antenna further comprising a first hinge on the bottom portion of said first flip and a second hinge on said bottom portion of said second flip, wherein both said first and second hinges guide said flips for rotation about an axis passing through said housing.

3. An antenna in accordance with claim 2 further comprising a first engagement tab on said first hinge engaging said second flip to rotate said second flip from said closed position to said operational position when said first flip is moved from said closed position to said operational position.

4. An antenna in accordance with claim 3 further comprising a stop on said housing to stop said second flip at said open position.

5. An antenna in accordance with claim 4 wherein said antenna comprises a single input dual-band antenna.

6. An antenna in accordance with claim 1 wherein said second flip incorporates a speaker.

7. An antenna in accordance with claim 1 wherein said antenna element comprises a conductive trace.

8. An antenna in accordance with claim 1 wherein said antenna element comprises a strip of metal.

9. An antenna in accordance with claim 8 wherein said first flip is molded, and wherein said conductive strip is molded into said first flip.

10. A communication device comprising:

a housing having a front with operating controls and an end having an axle;

a first flip having an integrated antenna element pivotable on said axle from a closed position covering the front of said housing to an operational position; and

a second flip having a conductive element opposed to said antenna element pivotable on said axle between a closed position between said housing and said first flip and an operational position at an angle from said first flip, wherein said antenna element and said conductive element form an antenna for said communication device.

11. A communication device in accordance with claim 10 further comprising a first engagement tab on said first flip engaging said second flip to rotate said second flip to its operational position when said first flip is moved to its operational position.

12. A communication device in accordance with claim 11 further including a stop on said housing to stop said second flip at its operational position as said first flip is moved to said operational position.

13. A communication device in accordance with claim 10 wherein said second flip includes a speaker.

14. A communication device comprising:

an operational unit including user controls, a microphone and a radio communications device; and

an antenna including

a cover pivotally mounted on said operational unit and including an antenna element, said cover pivoting from a closed position adjacent to said user controls and protecting said antenna element to an operational position angularly spaced from said user controls exposing said antenna element, and

an intermediary conductive element pivoting on a closed position between said cover and said user controls to an operational position at a defined angle with said cover in said operational position.

15. A communication device in accordance with claim 14 wherein said intermediary conductive element includes a speaker.