Loop antenna and electronic equipment including loop antenna
First Claim
1. A loop antenna that is connected to an IC chip which has a CPU and a memory mounted thereon and which is incorporated in a casing, and that transmits or receives predetermined electromagnetic waves to or from a reader writer, comprising:
- a main loop antenna; and
at least one sub-loop antenna disposed away from the main loop antenna.
2 Assignments
0 Petitions
Accused Products
Abstract
The present invention is intended to improve the receiving performance of a loop antenna to be connected to an IC chip that is incorporated in an IC card or a portable cellular phone. A loop antenna that is connected to an IC chip which has a CPU and a memory mounted thereon and which is incorporated in a casing, and that transmits or receives predetermined electromagnetic waves to or from a reader writer includes a main loop antenna and at least one sub-loop antenna disposed away from the main loop antenna. The sub-loop antenna is connected to the IC chip in parallel with or in series with the main loop antenna. A transmission/reception frequency at which the sub-loop antenna transmits or receives electromagnetic waves may be different from the one at which the main loop antenna transmits or receives electromagnetic waves.
-
Citations
20 Claims
-
1. A loop antenna that is connected to an IC chip which has a CPU and a memory mounted thereon and which is incorporated in a casing, and that transmits or receives predetermined electromagnetic waves to or from a reader writer, comprising:
-
a main loop antenna; and
at least one sub-loop antenna disposed away from the main loop antenna. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
-
-
20. Electronic equipment having a built-in antenna, wherein the antenna includes:
-
a main loop antenna; and
at least one sub-loop antenna disposed away from the main loop antenna.
-
Specification