High frequency antenna module

• US 7,129,893 B2
• Filed: 02/09/2004
• Issued: 10/31/2006
• Est. Priority Date: 02/07/2003
• Status: Expired due to Fees

• Current Assignee: NGK Spark PLUG Company Limited
• Original Assignee: NGK Spark PLUG Company Limited
• Inventors: Sugimoto, Noriyasu, Takada, Toshikatsu, Otaka, Naoki
• Primary Examiner(s): PHAN, THO GIA
• Application Number:
  US10/773,314
• Publication Number:
  US 20040183729A1
• Time in Patent Office: 995 Days
• Field of Search: 343/700.MS, 343/702, 343/895, 343/700
• US Class Current: 343/700.0MS
• CPC Class Codes: H01Q 1/243 with built-in antennas
• CPC Class Codes: H01Q 1/36 Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewithH01Q1/08, H01Q1/14 take precedence
• CPC Class Codes: H01Q 1/38 formed by a conductive layer on an insulating support patch antennas H01Q9/0407; microstrip dipole antennas H01Q9/065; microstrip slot antennas H01Q13/106; transmission line microstrip antennas H01Q13/206; manufacturing reflecting surfaces using insulating material for supporting the reflecting surface H01Q15/142
• CPC Class Codes: H01Q 21/24 Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction circularly polarised patch antennas H01Q9/0428; circularly polarised horns H01Q13/0241; cross-polarised horns H01Q13/0258; polarisation converters H01Q15/242; cross-polarised rear feeds H01Q19/136; crossed polarisation dual antenna H01Q25/001
• CPC Class Codes: H01Q 21/28 Combinations of substantially independent non-interacting antenna units or systems multiple beam H01Q25/00
• CPC Class Codes: H01Q 5/371 Branching current paths

Abstract

A high frequency antenna module having a substrate, a feeding electrode and two dielectric chip antennas being mounted on said substrate. Each of the two dielectric chip antennas having a base end connected to the feeding electrode and a floating end as an open end. A distance between said open ends of the two dielectric chip antennas is shorter than a distance between said base ends of the two dielectric chip antennas.

Claims

1. A high frequency antenna module, comprising:

a substrate;

first and second feeding lines; and

first and second dielectric chip antennas of the same frequency, each of said chip antennas comprising a λ

/4 antenna formed by a respective dielectric chip, each said chip including a feeding electrode and a radiation electrode;

wherein;

said first and second dielectric chip antennas are each mounted on said substrate with the associated feeding electrode connected to a respective feeding line of the first and second feeding lines;

each said radiation electrode has a base end connected to the associated feeding electrode and a floating end forming an open end of the corresponding dielectric chip antenna; and

a distance between the open ends of the dielectric chip antennas is shorter than a distance between said base ends.

2. The high frequency antenna module according to claim 1, wherein:

each of said two dielectric chip antennas comprises a pair of said radiation electrodes,

each said pair of radiation electrodes is arranged so that both base ends of said pair of radiation electrodes are connected to said feeding electrode, and so that both floating ends of said radiation electrodes are open ends,

one of said radiation electrodes corresponds to one frequency,

the other of said radiation electrodes corresponds to a different frequency from said one frequency, and

a distance between the open end of a first radiation electrode of said one pair of radiation electrodes and the open end of the corresponding radiation electrode of the other pair of radiation electrodes is shorter than a distance between said base ends of said first radiation electrode and said corresponding radiation electrode.

3. The high frequency antenna module according to claim 2, wherein said radiation electrode have a meandering shape.

4. The high frequency antenna module according to claim 2, wherein:

the one of said radiation electrodes is longer than the other of said radiation electrodes,

the one of said radiation electrodes is disposed in parallel with the corresponding feeding line, and

the open end of the other of said radiation electrode is located between extension lines of the feeding lines.

5. The high frequency antenna module according to claim 1, wherein said radiation electrode have a meandering shape.

6. The high frequency antenna module according to claim 5, wherein said two dielectric chip antennas are formed in a rectangular parallelepiped shape.

7. In combination, a substrate and a circuit module mounted on the substrate, said circuit module comprising:

first and second feeding lines; and

first and second antennas of the same frequency and comprising a radiation electrode forming a λ

/4 internal antenna used for a portable or wireless application, said antennas being mounted on the substrate, each in contact with a respective one of said feeding lines, wherein;

each said radiation electrode has a base end connected to a feeding electrode and a floating end forming an open end of the antenna,

a distance between said open ends of said two antennas is shorter than a distance between said base ends, and

said radiation electrodes have a meandering shape.

8. The combination as claimed in claim 7 claim wherein said circuit module comprises a duplexer.

9. The combination as claimed in claim 7 claim wherein said circuit module comprises a switching element for a duplexer.

10. The combination as claimed in claim 7 claim wherein said circuit module comprises an amplifier.

11. The combination as claimed in claim 7 claim wherein said circuit module comprises a low pass filter.

12. The combination as claimed in claim 7 claim wherein said circuit module comprises a band pass filter.

13. A high frequency antenna module, comprising:

a substrate;

first and second feeding lines; and

first and second antennas of the same frequency and comprising a radiation electrode forming a λ

/4 internal antenna used for a portable or wireless application, said antennas being mounted on the substrate, each in contact with a respective one of said feeding lines, wherein;

each said radiation electrode has a base end connected to a feeding electrode and a floating end forming an open end of the antenna, and

a distance between said open ends of said two antennas is shorter than a distance between said base ends,

each of said two antennas comprising a pair of said radiation electrodes,

each said pair of radiation electrodes being arranged so that both base ends of said pair of radiation electrodes are connected to said feeding electrode, and so that said floating ends of said radiation electrodes forms open ends,

one of said pair of radiation electrodes corresponding to a different frequency from said one frequency, and

a distance between the open end of a radiation electrode of the one pair and the open end of the corresponding radiation electrode of the other pair being shorter than a distance between said base ends of said corresponding radiation electrodes.

14. The high frequency antenna module according to claim 13, wherein said radiation electrodes have a meandering shape.

15. The high frequency antenna module according to claim 13, wherein:

the one of said radiation electrodes is longer than the other of said radiation electrodes,

the one of said radiation electrodes is disposed in parallel with the corresponding feeding line, and

the open end of the other of said radiation electrode is located between extension lines of the feeding lines.