Parasitically coupled folded dipole multi-band antenna

• US 7,292,200 B2
• Filed: 09/02/2005
• Issued: 11/06/2007
• Est. Priority Date: 09/23/2004
• Status: Expired due to Fees

• Current Assignee: Mobile Mark, Inc.
• Original Assignee: Mobile Mark, Inc.
• Inventors: Posluszny, Jerry C., Posluszny, Randy C.
• Primary Examiner(s): LE, HOANGANH T
• Application Number:
  US11/218,755
• Publication Number:
  US 20060061515A1
• Time in Patent Office: 795 Days
• Field of Search: 343/795, 343/793, 343/702, 343/700.MS, 343/803
• US Class Current: 343/803
• CPC Class Codes: H01Q 1/243 with built-in antennas
• 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 5/378 Combination of fed elements with parasitic elements
• CPC Class Codes: H01Q 5/385 Two or more parasitic elements
• CPC Class Codes: H01Q 9/26 with folded element or elements, the folded parts being spaced apart a small fraction of operating wavelength resonant loop antennas H01Q7/00
• CPC Class Codes: H01Q 9/285 Planar dipole H01Q9/065 takes precedence; patch antenna H01Q9/0407

Abstract

An antenna is provided which includes a primary folded dipole element and a feed for the primary folded dipole element. The primary folded dipole element is operable to resonate at a first frequency range. A parasitic dipole element is located within the primary folded dipole element and is spaced therefrom. The parasitic dipole element is operable to resonate at a frequency range that is higher than the first frequency range. Additional parasitic dipole elements may be located within the primary folded dipole element and spaced therefrom to resonate at different frequency ranges.

Claims

1. An antenna which comprises:

a primary folded dipole element;

a feed for said primary folded dipole element;

said primary folded dipole element being operable to resonate at a first frequency range;

said primary folded dipole element being rectangular and including dipole extensions extending from said rectangle to provide a desired resonance;

a first parasitic dipole element;

said first parasitic dipole element being rectangular;

said first parasitic dipole element being located within said primary folded dipole element and spaced therefrom;

said first parasitic dipole element being operable to resonate at a frequency range higher than said first frequency range;

said primary folded dipole element including dipole extensions extending from said rectangle to provide a desired resonance;

said primary folded dipole element with said extensions and said first parasitic dipole element being formed of metal on a printed circuit board, said extensions having a distal end with said extensions increasing in width toward said distal end to provide a wider band width response.

2. An antenna which comprises:

a primary folded dipole element;

a feed for said primary folded dipole element;

said primary folded dipole element being operable to resonate at a first frequency range;

a first parasitic dipole element;

said first parasitic dipole element being located within said primary folded dipole element and spaced therefrom;

said first parasitic dipole element being operable to resonate at a frequency range higher than first frequency range;

said primary folded dipole being rectangular and including dipole extensions extending from said rectangle to provide a desired resonance;

said primary element with said extensions and said parasitic element being formed of metal on a printed circuit board, said extension having a distal end with said extensions increasing in width towards said distal end to provide a wider band width response.

3. An antenna which comprises:

a primary folded dipole element;

a feed for said primary folded dipole element;

said primary folded dipole element being operable to resonate at a first frequency range;

said primary folded dipole element being rectangular;

a first parasitic dipole element;

said first parasitic dipole element being located within said primary folded dipole element and spaced therefrom;

said first parasitic dipole element being operable to resonate at a frequency range higher than said first frequency range;

said primary folded dipole element and said first parasitic dipole element being formed on a printed circuit board;

said primary folded dipole element Including dipole extensions extending from said rectangle to provide a desired resonance, said primary folded dipole with said extensions and said parasitic dipole element being formed of metal on said printed circuit board;

said extensions having a distal end with said extensions increasing in width toward said distal end to provide a wider band width response.

4. An antenna which comprises:

a primary folded dipole element;

a feed for said primary folded dipole element;

said primary folded dipole element being operable to resonate at a first frequency range;

a first parasitic folded dipole element;

said first parasitic folded dipole element being located within said primary folded dipole element and spaced therefrom;

said first parasitic folded dipole element being operable to resonate at a frequency range higher than first frequency range;

said primary folded dipole being rectangular and including dipole extensions extending from said rectangle to provide a desired resonance; and

said primary element with said extensions and said parasitic element being formed of metal on a printed circuit board and said extensions having a distal end with said extensions increasing in width toward said distal end to provide a wider bandwidth response.

5. An antenna which comprises:

a primary folded dipole element;

a feed for said primary folded dipole element;

said primary folded dipole element being operable to resonate at a first frequency range;

said primary folded dipole element being rectangular;

a first parasitic folded dipole element;

said first parasitic folded dipole element being located within said primary folded dipole element and spaced therefrom;

said first parasitic folded dipole element being operable to resonate at a frequency range higher than said first frequency range;

said primary folded dipole element including dipole extensions extending from said rectangle to provide a desired resonance, said primary folded dipole element with said extensions and said first parasitic folded dipole element being formed of metal on a printed circuit board;

said extensions having a distal end with said extensions increasing in width toward said distal end to provide a wider bandwidth response.