Antenna device and portable radio communication terminal
First Claim
1. An antenna device comprising:
- a first substrate independent of a radio circuit with respect to high frequencies;
a first antenna formed on said first substrate and comprising of a slit-shaped notch antenna having a feeder; and
a second antenna disposed at a position other than said first substrate where said first antenna is formed, disposed in the vicinity of an open end of said first antenna in such a manner that the direction of main polarization thereof becomes coincident with that of said first antenna, and operating through electromagnetic coupling with said first antenna.
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Accused Products
Abstract
An antenna device and a mobile radio communication terminal adapted for improving the performance of an antenna. The antenna device includes a radio circuit for transmitting and receiving a high-frequency signal, a notch antenna having a feeder, and a notch antenna operating through electromagnetic coupling with the notch antenna, and a substrate independent of the radio circuit with respect to high frequencies. The notch antenna includes a linear slit having a length of λ/4 and cut from one edge of the substrate on the reverse side to the position of the radio circuit. The notch antenna includes a linear slit having a length slightly shorter than λ/4 and cut in parallel with the notch antenna from the same edge thereof at a position spaced apart by a predetermined distance d from the notch antenna.
34 Citations
5 Claims
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1. An antenna device comprising:
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a first substrate independent of a radio circuit with respect to high frequencies; a first antenna formed on said first substrate and comprising of a slit-shaped notch antenna having a feeder; and a second antenna disposed at a position other than said first substrate where said first antenna is formed, disposed in the vicinity of an open end of said first antenna in such a manner that the direction of main polarization thereof becomes coincident with that of said first antenna, and operating through electromagnetic coupling with said first antenna. - View Dependent Claims (2, 3, 4, 5)
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Specification