Antenna device and portable terminal
First Claim
Patent Images
1. An antenna device comprising:
- a substrate; and
an antenna provided on said substrate and having an electrical length of approximately (λ
/2)×
A (A is an integer), wherein said antenna includes a plate antenna portion positioned at a portion where an electrical length from an end portion is approximately λ
4+(λ
/2)×
B (B is an integer), and a linear antenna portion connected to said plate antenna portion.
1 Assignment
0 Petitions
Accused Products
Abstract
An antenna device (3a) includes a substrate (11) and an antenna (21) provided on the substrate (11) and having an electrical length of (λ/2)×A (A is an integer). The antenna (21) includes a plate antenna (21b) positioned at a portion where an electrical length from an end portion (21d) is approximately λ/4+(λ/2)×B (B is an integer), and a meander line antenna (21a, 21c) connected to the plate antenna (21b).
-
Citations
8 Claims
-
1. An antenna device comprising:
-
a substrate; and
an antenna provided on said substrate and having an electrical length of approximately (λ
/2)×
A (A is an integer), whereinsaid antenna includes a plate antenna portion positioned at a portion where an electrical length from an end portion is approximately λ
4+(λ
/2)×
B (B is an integer), anda linear antenna portion connected to said plate antenna portion. - View Dependent Claims (2, 3, 4)
said linear antenna portion includes at least one selected from the group consisting of a monopole antenna, a zigzag antenna, a meander line antenna, and a helical antenna. -
3. The antenna device according to claim 1, wherein
said substrate has a main surface having conductivity, and said antenna further includes a connection portion connected to said main surface of said substrate. -
4. The antenna device according to claim 1, wherein
said substrate has a main surface and a side surface continuous with the main surface, and said antenna is provided on said side surface.
-
-
5. A mobile terminal comprising:
-
a housing; and
an antenna device contained in said housing, wherein said antenna device includes a substrate, and an antenna provided on said substrate and having an electrical length of approximately (λ
/2)×
A (A is an integer), andsaid antenna includes a plate antenna portion positioned at a portion where an electrical length from an end portion is approximately λ
/4+(λ
/2)×
B (B is an integer), anda linear antenna portion connected to said plate antenna portion. - View Dependent Claims (6, 7, 8)
said linear antenna portion includes at least one selected from the group consisting of a monopole antenna, a zigzag antenna, a meander line antenna, and a helical antenna. -
7. The mobile terminal according to claim 5, wherein
said substrate has a main surface having conductivity, and said antenna further includes a connection portion connected to said main surface of said substrate. -
8. The mobile terminal according to claim 5, wherein
said substrate has a main surface and a side surface continuous with the main surface, and said antenna is provided on said side surface.
-
Specification
-
- Resources
Litigation Campaign Assessment
Thank you for your request. You will receive a custom alert email when the Litigation Campaign Assessment is available.
×
-
Current AssigneeMitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation)
-
Original AssigneeMitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation)
-
InventorsOhmine, Hiroyuki, Fukasawa, Toru, Shoji, Hideaki, Imanishi, Yasuhito
-
Primary Examiner(s)Ho, Tan
-
Application NumberUS10/149,431Publication NumberTime in Patent Office568 DaysField of Search343/700.MS, 343/702, 343/795, 343/895, 343/725US Class Current343/702CPC Class CodesH01Q 1/243 with built-in antennasH01Q 1/36 Structural form of radiatin...H01Q 1/38 formed by a conductive laye...H01Q 9/16 with feed intermediate betw...
