ANTENNA DEVICE AND WIRELESS TERMINAL USING THE ANTENNA DEVICE
First Claim
1. :
- An antenna apparatus comprising;
a linear radiating element placed on a first plane;
a first parasitic element placed on the first plane in parallel to the radiating element;
a first ground conductor placed on the first plane;
a first switch which connects both ends of the first parasitic element to the first ground conductor;
a second ground conductor placed on a second plane opposing the first plane; and
a control unit which controls short-circuiting/opening of the switch,wherein a part of the first ground conductor is placed in parallel to the radiating element and on a side opposite the first parasitic element with the radiating element sandwiched therebetween, andwherein the second ground conductor is placed opposite the radiating element, and ends of the second ground conductor oppose an area sandwiched between the radiating element and the first parasitic element.
2 Assignments
0 Petitions
Accused Products
Abstract
The present invention aims at providing an antenna apparatus which enables switching directivity suitable for a plurality of usage patterns of a wireless terminal, such as that achieved during voice conversation and that achieved during data communication, and is easily slimmed down, as well as providing a wireless terminal using the antenna apparatus.
An antenna apparatus 1 of the present invention includes a linear radiating element 3 placed on a first plane; a first parasitic element 6 placed on the first plane in parallel with the radiating element 3; a first ground conductor 5 placed on the first plane; a first switch 7 which connects both ends of the first parasitic element 6 to the first ground conductor; and a second ground conductor 8 placed on a second plane opposing the first plane, wherein a part of the first ground conductor 5 is placed in parallel with the radiating element 3 and on a side opposite the first parasitic element 6 with the radiating element 3 sandwiched therebetween; and the second ground conductor 8 is placed opposite the radiating element 3, and ends of the second ground conductor 8 oppose an area sandwiched between the radiating element 3 and the first parasitic element 6.
-
Citations
20 Claims
-
1. :
- An antenna apparatus comprising;
a linear radiating element placed on a first plane; a first parasitic element placed on the first plane in parallel to the radiating element; a first ground conductor placed on the first plane; a first switch which connects both ends of the first parasitic element to the first ground conductor; a second ground conductor placed on a second plane opposing the first plane; and a control unit which controls short-circuiting/opening of the switch, wherein a part of the first ground conductor is placed in parallel to the radiating element and on a side opposite the first parasitic element with the radiating element sandwiched therebetween, and wherein the second ground conductor is placed opposite the radiating element, and ends of the second ground conductor oppose an area sandwiched between the radiating element and the first parasitic element.
- An antenna apparatus comprising;
-
2. :
- An antenna apparatus comprising;
a linear radiating element placed on a first plane; a first linear parasitic element placed on the first plane in parallel to the radiating element; a linear auxiliary element provided at both ends of the first parasitic element; a first ground conductor placed on the first plane; a first switch which connects both ends of the first parasitic element to the auxiliary element; a second ground conductor placed on a second plane opposing the first plane; and a control unit which controls short-circuiting/opening of the switch, wherein the first ground conductor is placed in parallel to the radiating element and on a side opposite the first parasitic element with the radiating element sandwiched therebetween, and wherein the second ground conductor is placed opposite the radiating element, and ends of the second ground conductor oppose an area sandwiched between the radiating element and the first parasitic element.
- An antenna apparatus comprising;
-
3. :
- An antenna apparatus comprising;
a linear radiating element placed on a first plane; a first parasitic element placed on the first plane in parallel to the radiating element; a second linear parasitic element which is provided on the first plane opposite the first parasitic element with the radiating element interposed therebetween, and in parallel to the radiating element; a linear auxiliary element provided at both ends of the respective first and second parasitic elements; a first switch and a second switch which connect both ends of the first and second parasitic elements to the auxiliary elements provided on both sides of the respective first and second parasitic elements; a second ground conductor placed on a second plane opposing the first plane; and a control unit which controls short-circuiting/opening of the switch, wherein the second ground conductor is placed opposite the radiating element, and one end of the second ground conductor opposes an area sandwiched between the radiating element and the first parasitic element, and the other end of the second ground conductor opposes an area sandwiched between the radiating element and the second parasitic element. - View Dependent Claims (4, 5, 6, 7, 8, 15, 16, 17, 18, 19, 20)
- An antenna apparatus comprising;
-
9. :
- An antenna apparatus comprising;
a first substrate; a linear radiating element placed on a first plane which is one surface of the first substrate; a ground conductor placed on a second plane which is the other surface of the first substrate; a first conductor which is placed, in parallel to the radiating element, on the second plane while being electrically isolated from the ground conductor; a first switch for connecting the ground conductor to the conductor; and a control unit which controls short-circuiting/opening of the switch, wherein one of the ground conductor and the conductor is placed opposite the radiating element. - View Dependent Claims (10, 11, 12, 13, 14)
- An antenna apparatus comprising;
Specification