Circuit assembly and electronic device incorporating such an assembly

• US 7,072,187 B2
• Filed: 02/26/2003
• Issued: 07/04/2006
• Est. Priority Date: 02/26/2003
• Status: Active Grant

• Current Assignee: Google Technology Holdings LLC (Alphabet Inc.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Tay, Yew Siow, Ng, Guan Hong, Tan, Yu Chee
• Primary Examiner(s): Cuneo, Kamand
• Assistant Examiner(s): DINH, TUAN T
• Application Number:
  US10/375,839
• Publication Number:
  US 20040165365A1
• Time in Patent Office: 1,224 Days
• Field of Search: 361792-794, 361/814, 361/816, 361/818, 343/702, 343/700.MS, 455/269, 455/90
• US Class Current: 361/794
• CPC Class Codes: H01Q 1/243 with built-in antennas
• CPC Class Codes: H01Q 21/28 Combinations of substantially independent non-interacting antenna units or systems multiple beam H01Q25/00
• CPC Class Codes: H01Q 9/285 Planar dipole H01Q9/065 takes precedence; patch antenna H01Q9/0407
• CPC Class Codes: H01Q 9/30 with feed to end of elongated active element, e.g. unipole H01Q9/44 takes precedence
• CPC Class Codes: H04M 1/0214 Foldable telephones, i.e. with body parts pivoting to an open position around an axis parallel to the plane they define in closed position combined with translation movement H04M1/0235
• CPC Class Codes: H05K 1/0243 Printed circuits associated with mounted high frequency components
• CPC Class Codes: H05K 2201/2036 Permanent spacer or stand-off in a printed circuit or printed circuit assembly pattern for applying drops or paste H05K2203/0545

Abstract

A circuit assembly (1) and electronic device (30) having a printed circuit board (2), with conductive runners (3) and a ground plane (4). There is electronic circuitry (5) mounted to the circuit board (2) and electrically coupled to the runners (3). The circuit assembly (1) also has a Liquid Crystal Display (6) electrically coupled to the electronic circuitry (5), and a monopole element (7) is mounted on a surface of the Liquid Crystal Display (6) by a dielectric mount (10) that is proximal to an edge (11) of the printed circuit board (2).

Claims

1. A circuit assembly comprising:

a circuit substrate with conductive runners and at least one ground plane;

an electronic circuitry mounted to said circuit substrate and electrically coupled to said runners;

an electronic unit electrically coupled to at least part of said electronic circuitry; and

at least one monopole element mounted on a surface of the electronic unit by a dielectric mount, the dielectric mount being proximal to an edge of the substrate, said monopole element supported on a monopole substrate that is attached to the dielectric mount.

2. A circuit assembly as claimed in claim 1, wherein there is more than one monopole element thereby providing a plurality of monopole elements mounted on said monopole substrate.

3. A circuit assembly as claimed in claim 2, wherein all said monopole elements are flat conductive members.

4. A circuit assembly as claimed in claim 3, wherein all said monopole elements are aligned along a monopole plane.

5. A circuit assembly as claimed in claim 4, wherein the monopole plane is parallel to a planar surface of the ground plane.

6. A circuit assembly as claimed in claim 5, wherein a shortest distance between the monopole plane and the electronic unit is greater than a shortest distance between the electronic unit and the ground plane.

7. An electronic device comprising:

a circuit substrate with conductive runners and at least one ground plane;

an electronic circuitry mounted to said circuit substrate and electrically coupled to said runners;

an electronic unit electrically coupled to at least part of said electronic circuitry;

at least one monopole element mounted on a surface of the electronic unit by a dielectric mount, the dielectric mount being proximal to an edge of the substrate; and

a complementary monopole element thereby in combination with the at least monopole element forming a dipole antenna associated with the electronic circuitry, said monopole element supported on a monopole substrate that is attached to the dielectric mount.

8. An electronic device as claimed in claim 7, wherein there is more than one monopole element thereby providing a plurality of monopole elements mounted on said monopole substrate.

9. An electronic device as claimed in claim 8, wherein all said monopole elements are aligned along a monopole plane.

10. An electronic device as claimed in claim 9, wherein the substrate is mounted on the surface of the electronic unit.

11. An electronic device as claimed in claim 9, wherein the monopole plane is parallel to a planar surface of the ground plane.

12. An electronic device as claimed in claim 11, wherein a shortest distance between the monopole plane and the electronic unit is greater than a shortest distance between the electronic unit and the ground plane.