Antenna apparatus for transceiver
First Claim
1. An antenna apparatus for a wireless instrument comprising a wrist band fixed to an antenna element having a strip shaped conductive plate with a slot formed in a longitudinal direction of the conductive plate and a capacitance element attached between side sections of the conductive plate and extending across said slot.
1 Assignment
0 Petitions
Accused Products
Abstract
The present invention relates to an improvement of an antenna apparatus for a transceiver that is capable of obtaining a stable operation of an antenna without being affected by different sizes of wrist bands or by a durability of a metal clasp. An antenna unit (14) is comprised of a strip shaped conductive plate (13), whose slot (13a) is formed in the longitudinal direction of wrist band (12), which is connected to a casing (11) of the wrist type transceiver (10). One conductive section of slot (13a) of the conductive plate (13) provides a feeding point (131) in order to supply a positive potential. The other conductive section (130b) provides a second feeding point (132) in order to fix the other conductive section (130b) to the ground potential. A capacitance element (19) is attached between one conductive section (130a) and the other conductive section (130b) of the conductive plate (13).
-
Citations
80 Claims
- 1. An antenna apparatus for a wireless instrument comprising a wrist band fixed to an antenna element having a strip shaped conductive plate with a slot formed in a longitudinal direction of the conductive plate and a capacitance element attached between side sections of the conductive plate and extending across said slot.
- 14. An antenna apparatus for a wireless instrument comprising a wrist band having a first band and a second band connected to opposite sides of a casing, and at least one of said first and second bands is fixed to a slot antenna element having a strip shaped conductive plate with a slot formed in a longitudinal direction of the conductive plate.
-
26. An antenna apparatus for a wireless instrument comprising a wrist band having a first band and a second band connected to opposite edges of a casing, each of said first and second bands being fixed to an antenna element having a first and a second conductive plate, the first and the second conductive plates having a first slot and a second slot formed from the opposite edges of said casing and extending in a longitudinal direction of the conductive plates;
- wherein, at the opposite edges of said casing, said first conductive plate is divided into a first end section and a second end section by said first slot, said second conductive plate is divided into a first end section and a second end section by said second slot, respectively, and said first end sections are connected electrically to the second end sections through two electric paths located at a side of said casing.
- View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
-
43. A wireless instrument comprising:
-
a wrist band; and an antenna fixed to the wrist band and having a conductive plate with a slot, wherein said conductive plate includes first and second sections located on opposite sides of said slot, said first and second sections being provided with feeding points for attachment to a wireless instrument circuit, said first and second sections feeding a different potential to said wireless instrument circuit. - View Dependent Claims (44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65)
-
-
66. An antenna apparatus for a wireless instrument comprising:
-
a wrist band; an antenna element fixed to the wrist band having a conductive plate with a slot, wherein said conductive plate includes first and second sections located on opposite sides of said slot, said first and second sections being provided with feeding points for attachment to a wireless instrument circuit, said wireless instrument circuit feeding a different potential to said first and second sections. - View Dependent Claims (67, 68)
-
-
69. An antenna apparatus for a wireless instrument comprising:
-
a wrist band; and an antenna fixed to the wrist band, the antenna element having a conductive plate with a slot, wherein said conductive plate includes first and second portions located on opposite sides of said slot; and said first and second portions being provided with feeding points for attachment to a wireless instrument circuit, said feeding points being shifted by a predetermined distance from a center portion of said conductive plate when attached to said wireless instrument circuit. - View Dependent Claims (70, 71, 72, 73, 74)
-
-
75. An antenna apparatus for a wireless instrument comprising:
a wrist band fixed to a slot antenna element, the antenna element consisting of only one strip shaped conductive plate with a slot formed in a longitudinal direction of the conductive plate. - View Dependent Claims (76)
-
77. An antenna apparatus for a wireless instrument comprising:
-
a wrist band fixed to a slot antenna element having a strip shaped conductive plate with a slot formed in a longitudinal direction of the conductive plate, said conductive plate including first and second portions located on opposite sides of said slot; and circuit means for supplying a first potential to said first portion and a second potential, different from said first potential, to said second portion, so that said antenna element operates as a slot antenna. - View Dependent Claims (78)
-
-
79. A wireless instrument comprising:
-
a wrist band; and an antenna fixed to the wrist band and having a conductive plate with a slot, wherein said conductive plate includes first and second sections located on opposite sides of said slot, said first and second sections being provided with feeding points for attachment to a wireless instrument circuit, said wireless instrument circuit feeding a different potential to said first and second sections. - View Dependent Claims (80)
-
Specification