Patent US5757326A successfully refreshed from Google Patents.
US5757326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slot antenna device and wireless apparatus employing the antenna device
Assignee: Seiko Epson Corp
•
Filing: 1997-01-17
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Granted: 1998-05-26
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Expires: 2017-01-17
Abstract
Abstract A miniaturized and thin slot antenna device maintains high transmitting and receiving performance by improving the configuration of an antenna body and a circuit substrate. The slot antenna device includes an antenna body made of an electrically conductive member having a slot into which the circuit substrate is placed. Alternatively, the slotted, electrically conductive member can be placed flat on a first surface of the circuit substrate, which can contain a reflector on its second, opposite surface. The slot antenna device also can be constructed from two parallel, opposed, electrically conductive members spaced apart by a gap so that a slot is defined by outer peripheries of the electrically conductive members. The electrically conductive members can be provided on opposite surfaces of a circuit substrate.
Inventors
- 👤 Shunsuke Koyama
- 👤 Teruhiko Fujisawa
- 👤 Norio Hama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:27
CPC Classifications
H; H01; H01Q; H01Q13/00; H01Q13/10; H01Q13/106; H01Q1/00; H01Q1/12; H01Q1/22; H01Q1/24; H01Q1/241; H01Q1/242; H01Q1/243; H01Q1/27; H01Q1/273; H01Q21/00; H01Q21/29; H01Q7/00; H01Q7/005; H01Q9/00; H01Q9/04; H01Q9/0407; H01Q9/0414
Claims Analysis
Total Claims: 41
Claim 1
Independent Claim
111 words
A slot antenna device comprising: a pair of electrically conductive members opposed and parallel to each other in distinct planes, and spaced from each other by a predetermined gap, a connecting portion electrically connecting said pair of electrically conductive members at a predetermined position along outer peripheries of said pair of electrically conductive members, wherein said outer periphery of at least two adjacent edges of each of said pair of electrically conductive members is bent toward an other one of said pair of electrically conductive members to form bent portions defining a slot extending between said outer peripheries; and a wireless apparatus circuit coupled to said pair of electrically conductive members.
Claim 2
Dependent Claim
111 words
A slot antenna device comprising: a pair of electrically conductive members opposed and parallel to each other in distinct planes, and spaced from each other by a predetermined gap, a connecting portion electrically connecting said pair of electrically conductive members at a predetermined position along outer peripheries of said pair of electrically conductive members, wherein said outer periphery of at least two adjacent edges of each of said pair of electrically conductive members is bent toward an other one of said pair of electrically conductive members to form bent portions defining a slot extending between said outer peripheries; and a wireless apparatus circuit coupled to said pair of electrically conductive members.
Claim 3
Dependent Claim
19 words
A slot antenna device according to claim 1, wherein said wireless apparatus circuit includes a circuit for transmitting signals.
Claim 4
Dependent Claim
19 words
A slot antenna device according to claim 1, wherein said wireless apparatus circuit includes a circuit for receiving signals.
Claim 5
Dependent Claim
16 words
A slot antenna device according to claim 1, wherein said electrically conductive members are metal plates.
Claim 6
Dependent Claim
38 words
A slot antenna device according to claim 1, further comprising a tuning capacitance element electrically connecting said pair of electrically conductive members approximately at a center of a length of said slot as measured from said connecting portion.
Claim 7
Dependent Claim
18 words
A slot antenna device according to claim 5, wherein said tuning capacitance element is a tuning varactor diode.
Claim 8
Dependent Claim
54 words
A slot antenna device according to claim 1, wherein said pair of electrically conductive members have, on opposed sides of said slot, a first feed point attached to terminals of said wireless apparatus circuit to define an unbalanced circuit, and a second feed point attached to a ground terminal of said wireless apparatus circuit.
Claim 9
Dependent Claim
38 words
A slot antenna device according to claim 1, wherein said pair of electrically conductive members have, on opposed sides of said slot, a feed point attached to two terminals of a balanced circuit of said wireless apparatus circuit.
Claim 10
Dependent Claim
54 words
A slot antenna device according to claim 5, wherein said wireless apparatus circuit is electrically connected to said pair of electrically conductive members at a pair of feed points that are located at a different position from the position of electrical connection of said tuning capacitance element to said pair of electrically conductive members.
Claim 11
Dependent Claim
57 words
A slot antenna device according to claim 9, wherein said pair of feed points are electrically connected to said pair of electrically conductive members substantially halfway between the position of said connecting portion electrically connecting said pair of electrically conductive members and the position of said tuning capacitance element electrically connecting said pair of electrically conductive members.
Claim 12
Dependent Claim
30 words
A slot antenna device according to claim 5, further comprising a case that contains said wireless apparatus circuit, wherein said connecting portion is located on a side of said case.
Claim 13
Dependent Claim
131 words
A slot antenna device comprising: a pair of electrically conductive members opposed and parallel to each other in distinct planes, and spaced from each other by a predetermined gap, a connecting portion electrically connecting said pair of electrically conductive members at a predetermined position along outer peripheries of said pair of electrically conductive members, wherein said outer periphery of at least two adjacent edges of each of said pair of electrically conductive members extends toward an other one of said pair of electrically conductive members to form bent portions defining a slot extending between said outer peripheries; and a wireless apparatus circuit coupled to said pair of electrically conductive members, wherein a circuit block in which said wireless apparatus circuit is formed is located between said pair of electrically conductive members.
Claim 14
Dependent Claim
131 words
A slot antenna device comprising: a pair of electrically conductive members opposed and parallel to each other in distinct planes, and spaced from each other by a predetermined gap, a connecting portion electrically connecting said pair of electrically conductive members at a predetermined position along outer peripheries of said pair of electrically conductive members, wherein said outer periphery of at least two adjacent edges of each of said pair of electrically conductive members extends toward an other one of said pair of electrically conductive members to form bent portions defining a slot extending between said outer peripheries; and a wireless apparatus circuit coupled to said pair of electrically conductive members, wherein a circuit block in which said wireless apparatus circuit is formed is located between said pair of electrically conductive members.
Claim 15
Dependent Claim
32 words
A slot antenna device according to claim 12, wherein both of said pair of electrically conductive members have an aperture in a portion located adjacent to and opposed to said circuit block.
Claim 16
Dependent Claim
27 words
A slot antenna device according to claim 13, wherein a display panel is located on a portion of said circuit block opposed to one of said apertures.
Claim 17
Dependent Claim
109 words
A slot antenna device according to claim 12, wherein: a first one of said pair of electrically conductive members includes an aperture in a portion located adjacent to and opposed to said circuit block, said first electrically conductive member defining a case main body for defining an outer surface of said antenna device; a second one of said pair of electrically conductive members defines a cover member for covering a back opening of said case main body, and further comprising an electrically insulative spacer located between said case main body and said cover member so that said slot is formed between said case main body and said cover member.
Claim 18
Dependent Claim
156 words
A slot antenna device comprising: a circuit substrate having a first surface, a second surface facing in a direction opposite from said first surface, and containing a wireless apparatus circuit; and a first electrically conductive member located on said first surface of said circuit substrate, a second electrically conductive member located on said second surface of said circuit substrate, said first and second electrically conductive members opposed to each other and spaced from each other in distinct planes by a predetermined gap, a connecting portion electrically connecting said electrically conductive members at a predetermined position along outer peripheries of said electrically conductive members, said wireless apparatus circuit coupled to said first and second electrically conductive members wherein said outer periphery of at least two adjacent edges of each of said electrically conductive members is bent toward an other one of said electrically conductive members to form bent portions defining a slot extending between said outer peripheries.
Claim 19
Dependent Claim
156 words
A slot antenna device comprising: a circuit substrate having a first surface, a second surface facing in a direction opposite from said first surface, and containing a wireless apparatus circuit; and a first electrically conductive member located on said first surface of said circuit substrate, a second electrically conductive member located on said second surface of said circuit substrate, said first and second electrically conductive members opposed to each other and spaced from each other in distinct planes by a predetermined gap, a connecting portion electrically connecting said electrically conductive members at a predetermined position along outer peripheries of said electrically conductive members, said wireless apparatus circuit coupled to said first and second electrically conductive members wherein said outer periphery of at least two adjacent edges of each of said electrically conductive members is bent toward an other one of said electrically conductive members to form bent portions defining a slot extending between said outer peripheries.
Claim 20
Dependent Claim
19 words
A slot antenna device according to claim 16, wherein said wireless apparatus circuit includes a circuit for transmitting signals.
Claim 21
Dependent Claim
19 words
A slot antenna device according to claim 16, wherein said wireless apparatus circuit includes a circuit for receiving signals.
Claim 22
Dependent Claim
16 words
A slot antenna device according to claim 16, wherein said circuit substrate is a circuit board.
Claim 23
Dependent Claim
19 words
A slot antenna device according to claim 16, wherein said first and second electrically conductive members are metal plates.
Claim 24
Dependent Claim
55 words
A slot antenna device according to claim 16, wherein said first and second electrically conductive members have, on opposed sides of said slot, a first feed point attached to terminals of said wireless apparatus circuit to define an unbalanced circuit, and a second feed point attached to a ground terminal of said wireless apparatus circuit.
Claim 25
Dependent Claim
39 words
A slot antenna device according to claim 16, wherein said first and second electrically conductive members have, on opposed sides of said slot, a feed point attached to two terminals of a balanced circuit of said wireless apparatus circuit.
Claim 26
Dependent Claim
40 words
A slot antenna device according to claim 16, further comprising a tuning capacitance element electrically connected to said first and second electrically conductive members approximately at a center of a length of said slot as measured from said connecting portion.
Claim 27
Dependent Claim
18 words
A slot antenna device according to claim 23, wherein said tuning capacitance element is a tuning varactor diode.
Claim 28
Dependent Claim
34 words
A slot antenna device according to claim 23, wherein said tuning capacitance element is electrically connected with both of said first and second electrically conductive members through a through-hole located in said circuit substrate.
Claim 29
Dependent Claim
28 words
A slot antenna device according to claim 23, wherein at least one said first and second electrically conductive members is a conductor pattern formed on said circuit substrate.
Claim 30
Dependent Claim
47 words
A slot antenna device according to claim 23, wherein at least one of said first and second electrically conductive members is attached to a conductor pattern formed on said circuit substrate at a location corresponding to a predetermined position of said at least one electrically conductive member.
Claim 31
Dependent Claim
20 words
A slot antenna device according to claim 27, wherein said first and second electrically conductive members are electrically conductive wires.
Claim 32
Dependent Claim
35 words
A slot antenna device according to claim 27, wherein said first and second electrically conductive members include terminals that project toward said circuit substrate and are attached to said conductor pattern on said circuit substrate.
Claim 33
Dependent Claim
46 words
A slot antenna device according to claim 16, wherein said first and second electrically conductive members are located on a first area of said circuit substrate and said wireless apparatus circuit is located on a second area of said circuit substrate adjacent to said first area.
Claim 34
Dependent Claim
21 words
A slot antenna device according to claim 16, wherein said connecting portion is located in a through-hole of said circuit substrate.
Claim 35
Dependent Claim
26 words
A slot antenna device according to claim 16, wherein said first and second electrically conductive members are placed along an edge portion of said circuit substrate.
Claim 36
Dependent Claim
143 words
A wireless apparatus comprising: a slot antenna circuit; a connection circuit coupled to said slot antenna circuit; an amplification circuit coupled to said connection circuit; a demodulating circuit coupled to said amplification circuit; said slot antenna circuit including a pair of electrically conductive members opposed and parallel to each other in distinct planes, and spaced from each other by a predetermined gap, a connecting portion electrically connecting said pair of electrically conductive members at a predetermined position along outer peripheries of said pair of electrically conductive members; said connection circuit being coupled to said pair of electrically conductive members wherein said outer periphery of at least two adjacent edges of each of said pair of electrically conductive members is bent toward an other one of said pair of electrically conductive members to form bent portions defining a slot extending between said outer peripheries.
Claim 37
Dependent Claim
143 words
A wireless apparatus comprising: a slot antenna circuit; a connection circuit coupled to said slot antenna circuit; an amplification circuit coupled to said connection circuit; a demodulating circuit coupled to said amplification circuit; said slot antenna circuit including a pair of electrically conductive members opposed and parallel to each other in distinct planes, and spaced from each other by a predetermined gap, a connecting portion electrically connecting said pair of electrically conductive members at a predetermined position along outer peripheries of said pair of electrically conductive members; said connection circuit being coupled to said pair of electrically conductive members wherein said outer periphery of at least two adjacent edges of each of said pair of electrically conductive members is bent toward an other one of said pair of electrically conductive members to form bent portions defining a slot extending between said outer peripheries.
Claim 38
Dependent Claim
195 words
A wireless apparatus comprising: a slot antenna circuit; a connection circuit coupled to said slot antenna circuit; an amplification circuit coupled to said connection circuit; a demodulating circuit coupled to said amplification circuit; said slot antenna circuit including a circuit substrate having a first surface, a second surface facing in a direction opposite from said first surface, and containing said connection circuit, said amplification circuit, and said demodulating circuit; and a first electrically conductive member located on said first surface of said circuit substrate, a second electrically conductive member located on said second surface of said circuit substrate, said first and second electrically conductive members opposed to each other and spaced from each other in distinct planes by a predetermined gap, a connecting portion electrically connecting said electrically conductive members at a predetermined position along outer peripheries of said electrically conductive members; said connection circuit coupled to said first and second electrically conductive members wherein said outer periphery of at least two adjacent edges of each of said of electrically conductive members is bent toward an other one of said electrically conductive members to form bent portions defining a slot extending between said outer peripheries.
Claim 39
Dependent Claim
195 words
A wireless apparatus comprising: a slot antenna circuit; a connection circuit coupled to said slot antenna circuit; an amplification circuit coupled to said connection circuit; a demodulating circuit coupled to said amplification circuit; said slot antenna circuit including a circuit substrate having a first surface, a second surface facing in a direction opposite from said first surface, and containing said connection circuit, said amplification circuit, and said demodulating circuit; and a first electrically conductive member located on said first surface of said circuit substrate, a second electrically conductive member located on said second surface of said circuit substrate, said first and second electrically conductive members opposed to each other and spaced from each other in distinct planes by a predetermined gap, a connecting portion electrically connecting said electrically conductive members at a predetermined position along outer peripheries of said electrically conductive members; said connection circuit coupled to said first and second electrically conductive members wherein said outer periphery of at least two adjacent edges of each of said of electrically conductive members is bent toward an other one of said electrically conductive members to form bent portions defining a slot extending between said outer peripheries.
Claim 40
Dependent Claim
114 words
A slot antenna device comprising: a pair of electrically conductive members in distinct planes separated by a gap, wherein each electrically conductive member is formed as a closed figure; and a conductor electrically connecting said pair of electrically conductive members and forming an electrical short across said gap, wherein said conductive members and said conductor form a continuous conductive antenna structure wherein an outer periphery of at least two adjacent edges of each of said pair of electrically conductive members is bent toward an other one of said pair of electrically conductive members to form bent portions defining a slot extending between said outer periphery of each of said pair of electrically conductive members.
Claim 41
Dependent Claim
114 words
A slot antenna device comprising: a pair of electrically conductive members in distinct planes separated by a gap, wherein each electrically conductive member is formed as a closed figure; and a conductor electrically connecting said pair of electrically conductive members and forming an electrical short across said gap, wherein said conductive members and said conductor form a continuous conductive antenna structure wherein an outer periphery of at least two adjacent edges of each of said pair of electrically conductive members is bent toward an other one of said pair of electrically conductive members to form bent portions defining a slot extending between said outer periphery of each of said pair of electrically conductive members.
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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) | 2001-05-25 | 2001-11-24 | 2002-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-05-25 | 2005-11-24 | 2006-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-05-25 | 2009-11-24 | 2010-05-26 | $7700.00 | Window Closed / Lapsed |