Communication terminal device
First Claim
1. A communication terminal device comprising:
- a casing that includes a leading end portion, a metal portion defining at least a portion of the casing, and a pair of main surfaces; and
an antenna that includes a magnetic core including a first main surface and a second main surface, which oppose each other, and a coil conductor that is arranged on at least either of the first main surface and the second main surface of the magnetic core and is arranged adjacent to the metal portion of the casing;
whereinthe antenna is configured to have directivity direction that is tilted toward a direction of the leading end portion from a direction that is perpendicular or substantially perpendicular to the pair of main surfaces of the casing;
the coil conductor includes a first conductor portion positioned on a side of the first main surface of the magnetic core and a second conductor portion positioned on a side of the second main surface of the magnetic core and arranged at a different position than the first conductor portion when viewed in a direction perpendicular to the first and second main surfaces, and the coil conductor is arranged such that the side of the first main surface of the magnetic core is on a side of the magnetic core closer to the metal portion and such that the first conductor portion of the coil conductor faces the leading end portion; and
a position in a center of the coil conductor is arranged farther from the leading end portion toward a trailing end portion of the casing, which is an end portion on the side opposite to the leading end portion, than a position in a center of the casing in a longitudinal direction of the casing.
1 Assignment
0 Petitions
Accused Products
Abstract
An RFID antenna is arranged in the vicinity of a metal portion of and on an outer surface side of a casing of a communication terminal device. The RFID antenna includes a magnetic core, and a coil conductor that is wound around the magnetic core. The coil conductor includes a first conductor portion positioned on a first main surface side of the magnetic core and a second conductor portion positioned on the second main surface side of the magnetic core and arranged at a different position than the first conductor portion when viewed in plan from the direction of the first and second main surfaces, and the coil conductor is arranged such that the first main surface side of the magnetic core is on the metal portion side and such that the first conductor portion of the coil conductor faces a leading end portion of the casing.
161 Citations
20 Claims
-
1. A communication terminal device comprising:
-
a casing that includes a leading end portion, a metal portion defining at least a portion of the casing, and a pair of main surfaces; and an antenna that includes a magnetic core including a first main surface and a second main surface, which oppose each other, and a coil conductor that is arranged on at least either of the first main surface and the second main surface of the magnetic core and is arranged adjacent to the metal portion of the casing;
whereinthe antenna is configured to have directivity direction that is tilted toward a direction of the leading end portion from a direction that is perpendicular or substantially perpendicular to the pair of main surfaces of the casing; the coil conductor includes a first conductor portion positioned on a side of the first main surface of the magnetic core and a second conductor portion positioned on a side of the second main surface of the magnetic core and arranged at a different position than the first conductor portion when viewed in a direction perpendicular to the first and second main surfaces, and the coil conductor is arranged such that the side of the first main surface of the magnetic core is on a side of the magnetic core closer to the metal portion and such that the first conductor portion of the coil conductor faces the leading end portion; and a position in a center of the coil conductor is arranged farther from the leading end portion toward a trailing end portion of the casing, which is an end portion on the side opposite to the leading end portion, than a position in a center of the casing in a longitudinal direction of the casing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
-
-
19. A communication terminal device comprising:
-
a casing that includes a leading end portion, a metal portion defining at least a portion of the casing, and a pair of main surfaces; and an antenna that includes a magnetic core including a first main surface and a second main surface, which oppose each other, and a coil conductor that is arranged on at least either of the first main surface and the second main surface of the magnetic core and is arranged adjacent to the metal portion of the casing;
whereinthe antenna is configured to have a directivity direction that is tilted toward a direction of the leading end portion from a direction that is perpendicular or substantially perpendicular to the pair of main surfaces of the casing; and sizes of the magnetic core and the coil conductor are chosen such that A/3≦
B≦
A/2 is satisfied, where A is a length of the magnetic core and B is a length of the coil conductor in a longitudinal direction of the casing.
-
-
20. A communication terminal device comprising:
-
a casing that includes a leading end portion, a metal portion defining at least a portion of the casing, and a pair of main surfaces; and an antenna that includes a magnetic core including a first main surface and a second main surface, which oppose each other, and a coil conductor that is arranged on at least either of the first main surface and the second main surface of the magnetic core and is arranged adjacent to the metal portion of the casing; wherein the antenna is configured to have a directivity direction that is tilted toward a direction of the leading end portion from a direction that is perpendicular or substantially perpendicular to the pair of main surfaces of the casing; the antenna is an RFID antenna; the casing includes a substrate, and the metal portion is located between the RFID antenna and the substrate; the substrate is a printed wiring board and includes contact pins arranged to be electrically connected to input/output terminals; and the antenna includes a substrate on which the coil conductor is located, and the input/output terminals are provided on the substrate of the antenna; and wherein portions of the input/output terminals are located between the metal portion and the contact pins.
-
Specification