Patent US5801660A successfully refreshed from Google Patents.
US5801660A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antenna apparatuus using a short patch antenna
Assignee: Mitsubishi Electric Corp
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Filing: 1996-01-31
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Granted: 1998-09-01
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Expires: 2016-01-31
Abstract
Abstract A planar antenna apparatus adapted to excite a small radiating element by electromagnetic coupling is provided. The antenna apparatus has a triplate line including ground conductor plates formed on the upper and lower surfaces of a dielectric substrate and a feed line sandwiched by the ground conductor plates. A coupling hole is formed through one of the ground conductor plates, and a mechanism is provided near the coupling hole for electrically interconnecting the two ground conductor plates. A radiating section coupled to the feed line through the coupling hole has one end grounded to form a short patch antenna. The short patch antenna has a size substantially half the size of a patch antenna. Also, the connecting mechanism prevents unnecessary coupling.
Inventors
- 👤 Masataka Ohtsuka
- 👤 Yoji Isota
- 👤 Shintaro Nakahara
- 👤 Makoto Matsunaga
- 👤 Yoshihiko Konishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:59
CPC Classifications
H; H01; H01Q; H01Q9/00; H01Q9/04; H01Q9/0407; H01Q9/0471; H01Q9/0414; H01Q9/0421; H01Q9/045; H01Q9/0457
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
152 words
An antenna apparatus, comprising: a dielectric substrate; a first ground conductor plate formed on said dielectric substrate; a radiating element of a short patch antenna type arranged over said ground conductor plate, including a signal radiating section spaced by a predetermined distance from said ground conductor plate and including connecting means for connecting one end of said signal radiating section to said ground conductor plate; a feed circuit for exciting said radiating element; a coupling means formed in said first ground conductor plate for electromagnetically coupling said feed circuit to said radiating element; a second ground conductor plate in addition to and spaced apart from said first ground conductor plate, wherein said feed circuit is arranged between said first and second ground conductor plates; and a connecting mechanism for connecting said first ground conductor plate to said second ground conductor plate near said coupling means formed on said first ground conductor plate.
Claim 2
Dependent Claim
152 words
An antenna apparatus, comprising: a dielectric substrate; a first ground conductor plate formed on said dielectric substrate; a radiating element of a short patch antenna type arranged over said ground conductor plate, including a signal radiating section spaced by a predetermined distance from said ground conductor plate and including connecting means for connecting one end of said signal radiating section to said ground conductor plate; a feed circuit for exciting said radiating element; a coupling means formed in said first ground conductor plate for electromagnetically coupling said feed circuit to said radiating element; a second ground conductor plate in addition to and spaced apart from said first ground conductor plate, wherein said feed circuit is arranged between said first and second ground conductor plates; and a connecting mechanism for connecting said first ground conductor plate to said second ground conductor plate near said coupling means formed on said first ground conductor plate.
Claim 3
Dependent Claim
16 words
An antenna apparatus according to claim 1, wherein said dielectric substrate is a foam dielectric substrate.
Claim 4
Dependent Claim
19 words
An antenna apparatus according to claim 2, wherein said ground conductor plate is formed by plating said dielectric substrate.
Claim 5
Dependent Claim
31 words
An antenna apparatus according to claim 1, further comprising a holding member for holding a constant spacing between said signal radiating section of said radiating element and said ground conductor plate.
Claim 6
Dependent Claim
41 words
An antenna apparatus according to claim 1, wherein said radiating element is arranged such that a positional relationship thereof with a coupling hole formed on said ground conductor plate for electromagnetically coupling the feed circuit to the radiating element is adjustable.
Claim 7
Dependent Claim
41 words
An antenna apparatus according to claim 1, wherein said connecting mechanism is a conductor block arranged between said ground conductor plate and said other ground conductor plate for connecting said two ground conductor plates and for electrically shielding said feed conductor.
Claim 8
Dependent Claim
32 words
An antenna apparatus according to claim 1, wherein said feed conductor includes a low impedance portion near said coupling hole to enhance electromagnetic coupling between said radiating element and said feed circuit.
Claim 9
Dependent Claim
30 words
An antenna apparatus according to claim 1, wherein said feed conductor includes a stub near said coupling hole to enhance electromagnetic coupling between said radiating element and said feed circuit.
Claim 10
Dependent Claim
34 words
An antenna apparatus according to claim 1, wherein the spacing between said radiating element and said ground conductor plate is made different at a grounded end and an open end of said radiating element.
Claim 11
Dependent Claim
30 words
An antenna apparatus according to claim 1, wherein said radiating element includes a plurality of radiating elements having respective signal radiating sections spaced from each other by a predetermined distance.
Claim 12
Dependent Claim
51 words
An antenna apparatus as set forth in claim 1, wherein said connecting mechanism comprises a ring spacer located between said first ground conductor plate and said second ground conductor plate, and a screw inserted through said ring spacer for connecting said first ground conductor plate to said second ground conductor plate.
Claim 13
Dependent Claim
59 words
An antenna apparatus as set forth in claim 1, wherein said connecting mechanism comprises a stop nut located between said first ground conductor plate and said second ground conductor plate, said stop nut including a threaded though hole, and a screw threaded through said through hole for connecting said first ground conductor plate to said second ground conductor plate.
Claim 14
Dependent Claim
51 words
An antenna apparatus as set forth in claim 1, wherein said connecting mechanism comprises a ring spacer located between said first ground conductor plate and said second ground conductor plate, and a rivet inserted through said ring spacer for connecting said first ground conductor plate to said second ground conductor plate.
Claim 15
Dependent Claim
30 words
An antenna apparatus as set forth in claim 1, wherein said radiating element, said first ground conductor plate, and said connecting mechanism are formed by a single integrally formed structure.
Claim 16
Dependent Claim
25 words
An antenna apparatus as set forth in claim 14, wherein said single integrally formed structure is made of resin material plated with a conductive material.
Claim 17
Dependent Claim
106 words
An antenna apparatus comprising: an antenna section including a feed circuit for transmitting signals; a ground conductor plate formed with at least one coupling hole; at least one radiating section excited by said feed circuit through said coupling hole; and grounding means for grounding an end of said radiating section to said ground conductor plate; a housing for accommodating said antenna section; and scattered wave reducing means arranged around said housing, wherein said scattered wave reducing means is a conductor block having a tapered portion, the height of which is gradually decreased from the top end of said housing to a base portion of said housing.
Claim 18
Dependent Claim
106 words
An antenna apparatus comprising: an antenna section including a feed circuit for transmitting signals; a ground conductor plate formed with at least one coupling hole; at least one radiating section excited by said feed circuit through said coupling hole; and grounding means for grounding an end of said radiating section to said ground conductor plate; a housing for accommodating said antenna section; and scattered wave reducing means arranged around said housing, wherein said scattered wave reducing means is a conductor block having a tapered portion, the height of which is gradually decreased from the top end of said housing to a base portion of said housing.
Claim 19
Dependent Claim
26 words
An antenna apparatus according to claim 16, wherein said scattered wave reducing means is a wave absorbing member arranged on the top end of said housing.
Claim 20
Dependent Claim
26 words
An antenna apparatus according to claim 16, wherein said scattered wave reducing means is means for electrically short-circuiting between said housing and said ground conductor plate.
Claim 21
Dependent Claim
95 words
An antenna apparatus comprising: an antenna section including: a feed circuit for transmitting signals; a ground conductor plate formed with at least one coupling hole; at least one radiating section excited by said feed circuit through said coupling hole; and grounding means for grounding an end of said radiating section to said ground conductor plate; a housing for accommodating said antenna section; propagation delay means for delaying the phases of waves propagated from said radiating section to control changes in radiation patterns of the antenna section caused by scattered waves generated around the antenna section.
Claim 22
Dependent Claim
95 words
An antenna apparatus comprising: an antenna section including: a feed circuit for transmitting signals; a ground conductor plate formed with at least one coupling hole; at least one radiating section excited by said feed circuit through said coupling hole; and grounding means for grounding an end of said radiating section to said ground conductor plate; a housing for accommodating said antenna section; propagation delay means for delaying the phases of waves propagated from said radiating section to control changes in radiation patterns of the antenna section caused by scattered waves generated around the antenna section.
Claim 23
Dependent Claim
197 words
An antenna apparatus comprising: a ground conductor plate; a radiating element of a short patch antenna type arranged on said ground conductor plate; a feed circuit for exciting said radiating element; a coupling means formed on said ground conductor plate for electromagnetically coupling said feed circuit to said radiating element; said ground conductor plate being formed on one surface of a dielectric substrate; said feed circuit being a triplate line including said ground conductor plate, another ground conductor plate and a strip conductor sandwiched between these ground conduct plates; said ground conductor plate being formed on a dielectric substrate; said radiating element including a signal radiating section being spaced by a predetermined distance from said ground conductor plate and connecting means for connecting one end of said signal radiating section to said ground conductor plate; another ground conductor plate in addition to and spaced apart from said ground conductor plate, wherein a feed conductor is arranged between said two ground conductor plates; and a connecting mechanism for connecting said ground conductor plate to said another conductor plate near said coupling means formed on said ground conductor plate for electromagnetically coupling the feed circuit to the radiating element.
Claim 24
Dependent Claim
197 words
An antenna apparatus comprising: a ground conductor plate; a radiating element of a short patch antenna type arranged on said ground conductor plate; a feed circuit for exciting said radiating element; a coupling means formed on said ground conductor plate for electromagnetically coupling said feed circuit to said radiating element; said ground conductor plate being formed on one surface of a dielectric substrate; said feed circuit being a triplate line including said ground conductor plate, another ground conductor plate and a strip conductor sandwiched between these ground conduct plates; said ground conductor plate being formed on a dielectric substrate; said radiating element including a signal radiating section being spaced by a predetermined distance from said ground conductor plate and connecting means for connecting one end of said signal radiating section to said ground conductor plate; another ground conductor plate in addition to and spaced apart from said ground conductor plate, wherein a feed conductor is arranged between said two ground conductor plates; and a connecting mechanism for connecting said ground conductor plate to said another conductor plate near said coupling means formed on said ground conductor plate for electromagnetically coupling the feed circuit to the radiating element.
Claim 25
Dependent Claim
32 words
An antenna apparatus according to claim 20, including a feed conductor having a low impedance portion near said coupling means to enhance electromagnetic coupling between said radiating element and said feed circuit.
Claim 26
Dependent Claim
30 words
An antenna apparatus according to claim 20, including a feed conductor having a stub near said coupling means to enhance electromagnetic coupling between said radiating element and said feed circuit.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-08-31 | 2002-03-02 | 2002-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-08-31 | 2006-03-02 | 2006-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-08-31 | 2010-03-02 | 2010-09-01 | $7700.00 | Window Closed / Lapsed |