Antenna and electronic apparatus

• US 8,125,392 B2
• Filed: 08/28/2007
• Issued: 02/28/2012
• Est. Priority Date: 09/01/2006
• Status: Expired due to Fees

• Current Assignee: Fujikura Limited
• Original Assignee: Fujikura Limited
• Inventors: Guan, Ning, Furuya, Hirotaka
• Primary Examiner(s): PHAN, THO GIA
• Application Number:
  US12/439,611
• Publication Number:
  US 20090273524A1
• Time in Patent Office: 1,645 Days
• Field of Search: 343/700.MS, 343/767, 343/770
• US Class Current: 343/700.MS
• 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: H01Q 13/10 Resonant slot antennas
• CPC Class Codes: H01Q 5/385 Two or more parasitic elements

Abstract

An antenna 1 includes: a plate-like base 3 made of an insulating material; and a conductor 5 in a predetermined shape, which has multiple cut-out portions 10, 13, 15 and which is provided at a predetermined position of the base 3 to obtain predetermined antenna characteristics. The antenna 1 is configured so that the antenna characteristics can be mostly maintained even when the base 3 is deformed into a predetermined curved-surface shape.

Claims

1. An antenna comprising:

a plate-like base made of an insulating material and having flexibility;

a first conductor formed into an approximately rectangular outer shape, and provided on a surface of the base, the first conductor having a first cut-out portion and a second cut-out portion;

a second conductor having a first element and a second element provided so as to connect the first element and the first conductor to each other, the first element being formed in a long narrow rectangular shape with approximately the same length as that of the first conductor, the first element being provided on the base a predetermined distance away from the first conductor, at a side of one end portion of the first conductor in a width direction, in such a way that a longitudinal direction of the first element is aligned with a longitudinal direction of the first conductor, the second element having a short rectangular shape, and being provided on the surface of the base so as to extend from one end portion of the first element in a longitudinal direction toward a vicinity thereof between the first element and the first conductor; and

a coaxial cable whose outer conductor is electrically connected to a first predetermined portion of the first conductor and whose inner conductor is electrically connected to a second predetermined portion of the second conductor;

wherein the first predetermined portion where the outer conductor of the coaxial cable is connected extends from the one end portion of the first conductor in the width direction to a vicinity thereof, at the side of the one end portion of the first conductor in the longitudinal direction thereof;

the second predetermined portion where the inner conductor of the coaxial cable is connected extends in the width direction of the first element, at a side of the one end portion of the first element of the second conductor in the longitudinal direction;

the first cut-out portion is formed into a long narrow rectangular shape with approximately the same width as that of the first element of the second conductor, and extends to an approximately center portion of the first conductor from the other end portion of the first conductor in the longitudinal direction, at the side of the one end portion of the first conductor in the width direction, in such a way that a longitudinal direction of the first cut-out portion is aligned with the longitudinal direction of the first conductor; and

the second cut-out portion is formed into a long narrow rectangular shape with approximately the same width as that of the first element of the second conductor, and extends to an approximately center portion of the first conductor from the one end portion of the first conductor in the longitudinal direction, at a side of the other end portion of the first conductor in the width direction in such a way that a longitudinal direction of the second cut-out portion is aligned with the longitudinal direction of the first conductor;

or alternatively, wherein the first cut-out portion is formed into a long narrow rectangular shape with approximately the same width as that of the first element of the second conductor, and extends to an approximately center portion of the first conductor from the one end portion of the first conductor in the longitudinal direction, at the side of the one end portion of the first conductor in the width direction, in such a way that the longitudinal direction of the first cut-out portion is aligned with the longitudinal direction of the first conductor; and

the second cut-out portion is formed into a long narrow rectangular shape with approximately the same width as that of the first element of the second conductor, and extends to an approximately center portion of the first conductor from the other end portion of the first conductor in the longitudinal direction, at a side of the other end portion of the first conductor in the width direction in such a way that the longitudinal direction of the second cut-out portion is aligned with the longitudinal direction of the first conductor.

2. An antenna comprising:

a plate-like base made of an insulating material and having flexibility;

a first conductor formed into an approximately rectangular outer shape, and provided on a surface of the base , the first conductor having a first cut-out portion and a second cut-out portion;

a second conductor having a first element and a second element provided so as to connect the first element and the first conductor to each other, the first element being formed in a long narrow rectangular shape with approximately the same length as that of the first conductor, the first element being provided on the base a predetermined distance away from the first conductor, at a side of one end portion of the first conductor in a width direction, in such a way that a longitudinal direction of the first element is aligned with a longitudinal direction of the first conductor, the second element having a short rectangular shape, and being provided on the surface of the base so as to extend from one end portion of the first element in a longitudinal direction toward a vicinity thereof between the first element and the first conductor; and

a coaxial cable whose outer conductor is electrically connected to a first predetermined portion of the first conductor and whose inner conductor is electrically connected to a second predetermined portion of the second conductor;

wherein the first predetermined portion where the outer conductor of the coaxial cable is connected extends from the one end portion of the first conductor in the longitudinal direction thereof to a vicinity thereof, at the side of the one end portion of the first conductor in the longitudinal direction thereof;

the second predetermined portion where the inner conductor of the coaxial cable is connected extends in a width direction of the first element, at a side of the one end portion of the first element of the second conductor in the longitudinal direction of the first element;

the first cut-out portion is formed into a long narrow rectangular shape with approximately the same width as that of the first element of the second conductor, and extends to a portion on the side of the one end portion of the first conductor in the longitudinal direction from the other end portion of the first conductor in the longitudinal direction, at the side of the one end portion of the first conductor in the width direction, in such a way that the longitudinal direction of the first cut-out portion is aligned with the longitudinal direction of the first conductor; and

the second cut-out portion is formed into a long narrow rectangular shape with approximately the same width as that of the first element of the second conductor, and extends to a portion on the side of the other end portion of the first conductor in the longitudinal direction from the one end portion of the first conductor in the longitudinal direction, at a side of the other end portion of the first conductor in the width direction in such a way that the longitudinal direction of the second cut-out portion is aligned with the longitudinal direction of the first conductor.

3. An antenna comprising:

a plate-like base made of an insulating material and having flexibility;

a first conductor formed into an approximately rectangular outer shape, and provided on a surface of the base , the first conductor having a first cut-out portion and a second cut-out portion;

a second conductor having a first element and a second element provided so as to connect the first element and the first conductor to each other, the first element being formed in a long narrow rectangular shape with approximately the same length as that of the first conductor, the first element being provided on the base a predetermined distance away from the first conductor, at a side of one end portion of the first conductor in a width direction, in such a way that a longitudinal direction of the first element is aligned with a longitudinal direction of the first conductor, the second element having a short rectangular shape, and being provided on the surface of the base so as to extend from one end portion of the first element in a longitudinal direction toward a vicinity thereof between the first element and the first conductor;

a first connection section formed into a rectangular shape, and provided on the surface of the base to be connected to the first element, the first connection section being located, in the width direction of the first conductor, at the side of the first element of the second conductor between the first conductor and the first element, and being located, in the longitudinal direction of the first conductor, at the side of the second element of the second conductor;

a second connection section formed into a rectangular shape, and provided on the surface of the base to be connected to the first conductor, the second connection section being located, in the width direction of the first conductor, at the side of the first conductor between the first conductor and the first element of the second conductor, and being located, in the longitudinal direction of the first conductor, between the first connection section and the second element of the second conductor; and

a coaxial cable whose inner conductor is electrically connected to the first connection section and whose outer conductor is electrically connected to the second connection section;

wherein the first cut-out portion is formed into a long narrow rectangular shape with approximately the same width as that of the first element of the second conductor, and extends to a portion on the side of the one end portion of the first conductor in the longitudinal direction from the other end portion of the first conductor in the longitudinal direction, at the side of the one end portion of the first conductor in the width direction, in such a way that the longitudinal direction of the first cut-out portion is aligned with the longitudinal direction of the first conductor; and

the second cut-out portion is formed into a long narrow rectangular shape with approximately the same width as that of the first element of the second conductor, and extends to a portion on the side of the other end portion of the first conductor in the longitudinal direction from the one end portion of the first conductor in the longitudinal direction, at a side of the other end portion of the first conductor in the width direction in such a way that the longitudinal direction of the second cut-out portion is aligned with the longitudinal direction of the first conductor.

4. An antenna comprising:

a plate-like base made of an insulating material and having flexibility;

a first conductor formed into an approximately rectangular outer shape, and provided on a surface of the base , the first conductor having a first cut-out portion and a second cut-out portion;

a second conductor having a first element and a second element provided so as to connect the first element and the first conductor to each other, the first element being formed in a long narrow rectangular shape with approximately the same length as that of the first conductor, the first element being provided on the base a predetermined distance away from the first conductor, at a side of one end portion of the first conductor in a width direction, in such a way that a longitudinal direction of the first element is aligned with a longitudinal direction of the first conductor, the second element having a short rectangular shape, and being provided on the surface of the base so as to extend from one end portion of the first element in a longitudinal direction toward a vicinity thereof between the first element and the first conductor; and

a coaxial cable whose inner conductor is electrically connected to a first predetermined portion of the first conductor and whose outer conductor is electrically connected to a second predetermined portion of the second conductor;

wherein the first predetermined portion where the inner conductor of the coaxial cable is connected is located at a side of the one end portion of the first conductor in the width direction and at a side of the one end portion of the first conductor in the longitudinal direction;

the second predetermined portion where the outer conductor of the coaxial cable is connected is located between the first predetermined portion and the second element of the second conductor, at a side of the one end portion of the first element of the second conductor in the longitudinal direction;

the first cut-out portion is formed into a long narrow rectangular shape with approximately the same width as that of the first element of the second conductor, and extends to a portion on the side of the one end portion of the first conductor in the longitudinal direction from the other end portion of the first conductor in the longitudinal direction, at the side of the one end portion of the first conductor in the width direction, in such a way that the longitudinal direction of the first cut-out portion is aligned with the longitudinal direction of the first conductor; and

the second cut-out portion is formed into a long narrow rectangular shape with approximately the same width as that of the first element of the second conductor, and extends to a portion on the side of the other end portion of the first conductor in the longitudinal direction from the one end portion of the first conductor in the longitudinal direction, at a side of the other end portion of the first conductor in the width direction in such a way that the longitudinal direction of the second cut-out portion is aligned with the longitudinal direction of the first conductor.