Coaxial cable assembly for a portable phone

• US 5,809,403 A
• Filed: 03/11/1996
• Issued: 09/15/1998
• Est. Priority Date: 03/11/1996
• Status: Expired due to Fees

• Current Assignee: Ericsson, Inc. (Telefonaktiebolaget LM Ericsson)
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Ma, Yawei, MacDonald, James D. Jr.
• Primary Examiner(s): Bost, Dwayne D.
• Assistant Examiner(s): GELIN, JEAN ALLAND
• Application Number:
  US08/613,700
• Time in Patent Office: 918 Days
• Field of Search: 455/550, 455/575, 455/90, 379/428, 379/433, 379/434, D14/138, D14/217, D14/230, D14/231, D14/236, D14/237, D14/238, D14/250, 343/878, 343/881, 343/882, 343/757
• US Class Current: 455/575.7
• CPC Class Codes: H04B 1/3833 Hand-held transceivers

Abstract

A coaxial cable assembly for connecting at least one antenna element with RF signal circuitry of a portable phone is disclosed. The portable phone includes a base portion in which the RF signal circuitry is located and a flip cover rotatably secured to the base portion in which the antenna elements are located. The flip cover is rotatably secured to the base portion by means of a support bracket assembly. The coaxial cable assembly provides a separate coaxial cable for each antenna element, with a first end thereof being coupled to the antenna element and a second end being coupled to the RF signal circuitry. Each coaxial cable is shaped to extend through the support bracket assembly so as to withstand bend stresses associated with rotation of the flip cover, with certain locations of the coaxial cable being formed to maintain such shape.

Claims

1. A coaxial cable assembly for connecting at least one antenna element of an antenna system with RF signal circuitry of a portable handheld phone, said portable phone including a base portion containing said RF signal circuitry and a flip cover containing said antenna element, wherein said flip cover is rotatably secured to said base portion about at least one axis of rotation by means of a support bracket assembly, said coaxial cable assembly comprising an individual coaxial cable for said antenna element connected at a first end to said antenna element and at a second end to said RF signal circuitry, each said coaxial cable including a plurality of non-linear portions maintained therein to neutrally position each said coaxial cable with respect to said rotation axis so as to withstand bend stresses associated with rotation of said flip cover.

2. The coaxial cable assembly of claim 1, wherein said flip cover rotates about two separate axes with respect to said base portion.

3. The coaxial cable assembly of claim 2, wherein said first and second axes of rotation are oriented substantially perpendicular to each other.

4. The coaxial cable assembly of claim 1, wherein said support bracket assembly is slidably and detachably coupled over and to a top portion of said base portion.

5. The coaxial cable assembly of claim 4, wherein each coaxial cable is coupled to said antenna element at a first end and detachably coupled to a connector at a second end, said connector being coupled to said RF signal circuitry.

6. The coaxial cable assembly of claim 1, wherein a plurality of antenna elements are located within said flip cover.

7. The coaxial cable assembly of claim 6, wherein at least one of said antenna elements transmits and receives signals so that said portable phone is able to communicate in a cellular mode.

8. The coaxial cable assembly of claim 6, wherein at least one of said antenna elements transmits and receives signals so that said portable phone is able to communicate in a satellite mode.

9. The coaxial cable assembly of claim 1, wherein a minimum bend radius is maintained for said non-linear portions of each said coaxial cable.

18. The coaxial cable assembly of claim 1, further comprising a cable relief device connected to said support bracket assembly for maintaining the position of each said coaxial cable with respect to said support bracket assembly.

10. A coaxial cable assembly for connecting at least one antenna element of an antenna system with RF signal circuitry of a portable handheld phone, said portable phone including a base portion containing said RF signal circuitry and a flip cover containing said antenna element, wherein said flip cover is rotatably secured to said base portion about at least one axis of rotation by means of a support bracket assembly, said support bracket assembly further comprising:

(a) a support bracket; and

(b) a hinge mechanism coupling and flip cover and said support bracket, said hinge mechanism including;

(1) a yoke having a first bearing at one end, a second bearing at the other end, and a middle portion connecting said first and second bearings having an annular step thereon with an opening therethrough;

(2) a shaft extending between said first and second yoke bearings; and

(3) a collar attached to said yoke middle portion having an opening therethrough aligned with said annular step opening through said yoke middle portion, wherein said flip cover is retained between said collar and said yoke to rotate about said annular step;

said coaxial cable assembly comprising an individual coaxial cable for each said antenna element connected at a first end to said antenna element and at a second end to said RF signal circuitry, wherein each said coaxial cable is shaped to traverse said support bracket assembly so as to withstand bend stresses associated with rotation of said flip cover.

11. The coaxial cable assembly of claim 10, wherein a first bend is formed in each said coaxial cable to extend through said collar and annular step openings.

12. The coaxial cable assembly of claim 11, wherein a second bend is formed in each said coaxial cable to extend longitudinally along said shaft extending between said first and second yoke bearings.

13. The coaxial cable assembly of claim 12, wherein a coil is formed in each said coaxial cable to extend around said shaft so that a second end of each said coaxial cable is matable with a connector located on said main housing.

14. The coaxial cable assembly of claim 13, wherein said first bend, said second bend, and said coil in each said coaxial cable is heat formed.

15. The coaxial cable assembly of claim 13, wherein said coil in each said coaxial cable accommodates rotation of said flip cover about a first axis.

16. The coaxial cable assembly of claim 12, wherein said first and second bends in each said coaxial cable accommodates rotation of said flip cover about a second axis.

17. The coaxial cable assembly of claim 11, wherein a slight bend is formed in each of said coaxial cables between said coaxial cable first end and said first bend.

19. The coaxial cable assembly of claim 13, wherein said first bend, said second bend, and said coil of each said coaxial cable is maintained during continuous opening and closing cycles of said flip cover.

20. The coaxial cable assembly of claim 12, wherein said first and second bends of each said coaxial cable have an angle of approximately 90°

.

21. The coaxial cable assembly of claim 13, wherein said coil of each said coaxial cable has an angle of approximately 360°

.

22. The coaxial cable assembly of claim 17, wherein said slight bend of each said coaxial cable has an angle of approximately 45°

.

23. A portable phone, comprising:

(a) a main housing;

(b) RF signal circuitry located within said main housing for operating said portable phone in a satellite mode of communication;

(c) a support bracket assembly detachably coupled to said main housing;

(d) a flip cover rotatably secured to said support bracket assembly about a first axis and a second axis;

(e) an antenna system coupled to said RF signal circuitry for transmitting and receiving signals in said satellite mode, wherein said antenna system is integrated with said flip cover; and

(f) a separate coaxial cable coupled to each antenna element of said antenna system at a first end and to said RF signal circuitry at a second end, each said coaxial cable including a plurality of non-linear portions maintained therein to neutrally position said coaxial cable with respect to said first and second axes so as to minimize bending stresses associated with rotation of said flip cover about said first and second axes.

24. The portable phone of claim 23, wherein the diameter of each said coaxial cable is minimized.

25. The portable phone of claim 23, wherein said non-linear portions in each said coaxial cable are heat formed to maintain shape under continuous cycles of opening and closing of said flip cover.

26. The portable phone of claim 23, wherein each said coaxial cable includes a coil formed therein.

27. The portable phone of claim 26, wherein rotation of said flip cover about said first axis causes said coil in each said coaxial cable to open and close.

28. The portable phone of claim 26, wherein rotation of said flip cover about said second axis causes a compound motion of said coil in each said coaxial cable.

29. The portable phone of claim 23, wherein rotation of said flip cover about said second axis causes a torsional movement in said non-linear portions of each said coaxial cable.

30. The portable phone of claim 23, wherein each said coaxial cable is preformed prior to assembly with said flip cover and said support bracket assembly.

31. A portable phone, comprising:

(a) a main housing;

(b) RF signal circuitry located with said main housing for operating said portable phone in a satellite mode of communication;

(c) a support bracket assembly detachable coupled to said main housing, said support bracket assembly further comprising;

(1) a support bracket; and

(2) a hinge mechanism including;

(a) a yoke having a first bearing at one end, a second bearing at the other end, and a middle portion connecting said first and second bearings having an annular step thereon with an opening therethrough;

(b) a shaft extending between said first and second yoke bearings; and

(c) a collar attached to said middle portion of said yoke having an opening therethrough aligned with said step opening through said yoke middle portion;

(d) a flip cover rotatably secured to said support bracket assembly about a first axis and a second axis, wherein said flip cover is retained between said collar and said yoke to rotate about said annular step;

(e) an antenna system coupled to said RF signal circuitry for transmitting and receiving signals in said satellite mode wherein said antenna system is integrated with said flip cover; and

(f) means for connecting said antenna system and said RF signal circuitry, said connecting means being configured to minimize bending stresses associated with rotation of said flip cover about said first and second axes.

32. The portable phone of claim 31, wherein said coaxial cable for each antenna element of said antenna system is shaped to pass through said collar opening and said annular step opening and thereafter coiled around said shaft extending between said yoke bearings.