Plane patch antenna through which desired resonance frequency can be obtained with stability

• US 6,639,556 B2
• Filed: 10/05/2001
• Issued: 10/28/2003
• Est. Priority Date: 10/10/2000
• Status: Expired due to Fees

• Current Assignee: ALPS Electric Company Limited (Alps Alpine Co., Ltd.)
• Original Assignee: ALPS Electric Company Limited (Alps Alpine Co., Ltd.)
• Inventors: Baba, Toshiki
• Primary Examiner(s): Clinger, James
• Application Number:
  US09/972,357
• Publication Number:
  US 20020041255A1
• Time in Patent Office: 753 Days
• Field of Search: 343/700.MS, 343/785, 343/846, 343/848, 343/849, 343/770, 343/767
• US Class Current: 343/700.0MS
• CPC Class Codes: H01Q 19/021 Means for reducing undesirable effects
• CPC Class Codes: H01Q 19/10 using reflecting surfaces
• CPC Class Codes: H01Q 9/0407 Substantially flat resonant element parallel to ground plane, e.g. patch antenna dipole H01Q9/285; monopole H01Q9/40
• CPC Class Codes: H01Q 9/0442 with particular tuning means

Abstract

A plane patch antenna has a dielectric substrate formed by calcining ceramic powder press-molded in a desired shape. On one surface of the dielectric substrate, a concave groove is continuously formed along the inside of its outer edge, and on an entire surface within a region partitioned by this concave groove, a patch electrode is thick-film printed.

Claims

1. A plane patch antenna comprising:

a dielectric substrate having a first portion of a first thickness that is completely surrounded by a second portion of a second thickness, the second portion defined by a groove;

a patch antenna formed on a surface of the first portion; and

a ground electrode formed on a surface opposing the patch antenna.

2. The plane patch antenna of claim 1, the patch antenna formed on an entirety of the surface of the first portion.

3. The plane patch antenna of claim 1, the ground electrode larger than patch antenna.

4. The plane patch antenna of claim 1, the second portion extending from an outer edge of the first portion to an outer edge of the dielectric substrate.

5. The plane patch antenna of claim 4, the patch antenna formed on an entirety of the surface of the first portion.

6. The plane patch antenna of claim 1, the first portion formed from a calcined ceramic powder and the patch antenna formed from a calcined metallic paste.

7. The plane patch antenna of claim 1, a surface of the dielectric substrate extending from an outer edge of the first portion to an end of the second portion exposed.

8. The plane patch antenna of claim 1, the first and second portions consisting of a single layer of dielectric material.

9. The plane patch antenna of claim 1, the patch antenna formed only on an entirety of the surface of the first portion.

10. The plane patch antenna of claim 1, the patch antenna consisting of conductive material formed on an entirety of the surface of the first portion.

11. The plane patch antenna of claim 1, a surface of the dielectric substrate extending from an outer edge of the first portion to an end of the second portion exposed.

12. The plane patch antenna of claim 1, the first and second portions consisting of a single layer of dielectric material.

13. The plane patch antenna of claim 1, the patch antenna formed only on an entirety of the surface of the first portion.

14. The plane patch antenna of claim 1, the patch antenna consisting of conductive material formed on an entirety of the surface of the first portion.

22. The plane patch antenna of claim 1, the first portion formed from a calcined ceramic powder and the patch antenna formed from a calcined metallic paste.

15. A plane patch antenna comprising:

a dielectric substrate having a first portion of a first thickness that is completely surrounded by a second portion of a second thickness, the second portion defined by a groove;

a patch antenna formed on a surface of the first portion; and

a ground electrode formed on an entirety of a surface opposing the patch antenna.

16. The plane patch antenna of claim 15, the patch antenna formed on an entirety of the surface of the first portion.

17. The plane patch antenna of claim 15, the ground electrode larger than patch antenna.

18. The plane patch antenna of claim 15, the groove being continuously formed around the first portion.

19. The plane patch antenna of claim 15, the second portion extending from an outer edge of the first portion to an outer edge of the dielectric substrate.

20. The plane patch antenna of claim 19, the second portion continuously formed around the first portion.

21. The plane patch antenna of claim 19, the patch antenna formed on an entirety of the surface of the first portion.