CARD DEVICE FOR WIRELESS COMMUNICATION

• US 20110128193A1
• Filed: 12/01/2010
• Published: 06/02/2011
• Est. Priority Date: 12/02/2009
• Status: Abandoned Application

• Current Assignee: Mitsumi Electric Co., Ltd. (MinebeaMitsumi Inc.)
• Original Assignee: Mitsumi Electric Co., Ltd. (MinebeaMitsumi Inc.)
• Inventors: Machida, Yuji, ARIMURA, SHOGO
• Application Number:
  US12/957,452
• Publication Number:
  US 20110128193A1
• Time in Patent Office: Days
• US Class Current: 343/702
• CPC Class Codes: H01Q 1/2275 associated to expansion card or bus, e.g. in PCMCIA, PC cards, Wireless USB
• CPC Class Codes: H01Q 1/2283 mounted in or on the surface of a semiconductor substrate as a chip-type antenna or integrated with other components into an IC package
• CPC Class Codes: H01Q 1/36 Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewithH01Q1/08, H01Q1/14 take precedence
• CPC Class Codes: H01Q 1/38 formed by a conductive layer on an insulating support patch antennas H01Q9/0407; microstrip dipole antennas H01Q9/065; microstrip slot antennas H01Q13/106; transmission line microstrip antennas H01Q13/206; manufacturing reflecting surfaces using insulating material for supporting the reflecting surface H01Q15/142
• CPC Class Codes: H04B 1/3816 Mechanical arrangements for accommodating identification devices, e.g. cards or chips; with connectors for programming identification devices
• CPC Class Codes: H04B 1/401 for selecting or indicating operating mode
• CPC Class Codes: H04W 84/16 WPBX [Wireless Private Branch Exchange]

Abstract

A card device for wireless communication which is to be attached to a mobile communication terminal includes a card substrate, a parasitic antenna element for transmission and reception formed on a first surface of the card substrate, and a feed antenna element for transmission and reception formed on a second surface of the card substrate opposite the first surface of the card substrate, wherein the parasitic antenna element and the feed antenna element have substantially the same shape, and are arranged to substantially completely overlap each other across the card substrate.

Claims

1. A card device for wireless communication which is to be attached to a mobile communication terminal, comprising:

a card substrate;

a parasitic antenna element for transmission and reception formed on a first surface of the card substrate; and

a feed antenna element for transmission and reception formed on a second surface of the card substrate opposite the first surface of the card substrate,

wherein the parasitic antenna element and the feed antenna element have substantially the same shape, and are arranged to substantially completely overlap each other across the card substrate.

2. The card device as claimed in claim 1, wherein each of the parasitic antenna element and the feed antenna element is a meander line antenna.

3. The card device as claimed in claim 2, wherein a signal frequency band transmitted and received by the parasitic antenna element and the feed antenna element is a 2.4-GHz frequency range.

4. A mobile communication terminal apparatus, comprising:

a card-device connector;

a card device for wireless communication that is detachably attached to the card-device connector; and

a control unit to control the card device,

wherein the card device includes;

a card substrate;

a parasitic antenna element for transmission and reception formed on a first surface of the card substrate; and

a feed antenna element for transmission and reception formed on a second surface of the card substrate opposite the first surface of the card substrate,

wherein the parasitic antenna element and the feed antenna element have substantially the same shape, and are arranged to substantially completely overlap each other across the card substrate.

5. A card device for wireless communication which is to be attached to a mobile communication terminal, comprising:

a card substrate;

a parasitic antenna element for transmission and reception formed on a first surface of the card substrate; and

a feed antenna element for transmission and reception formed on a second surface of the card substrate opposite the first surface of the card substrate,

wherein the parasitic antenna element and the feed antenna element are arranged to overlap each other across the card substrate.