Microstrap antenna

• US 5,229,777 A
• Filed: 11/04/1991
• Issued: 07/20/1993
• Est. Priority Date: 11/04/1991
• Status: Expired due to Fees

• Current Assignee: David W. Doyle
• Original Assignee: David W. Doyle
• Inventors: Doyle, David W.
• Primary Examiner(s): Hille, Rolf
• Assistant Examiner(s): LE, HOANGANH T
• Application Number:
  US07/787,250
• Time in Patent Office: 624 Days
• Field of Search: 343/700 MS, 343/795, 343/807, 343/829, 343/846, 343/767, 343/770
• US Class Current: 343/700.0MS
• CPC Class Codes: H01Q 13/106 Microstrip slot antennas patch antenna elements H01Q9/0407
• CPC Class Codes: H01Q 9/0407 Substantially flat resonant element parallel to ground plane, e.g. patch antenna dipole H01Q9/285; monopole H01Q9/40

Abstract

A microstrip antenna is provide for radiating a broad bandwidth of input signals. A pair of identical triangular patches are maintained upon a ground plane, with feed pins being connected to conductive planes of the triangular patches at apexes maintained in juxtaposition to each other. Sides of the conductive planes opposite such apexes are grounded and the radiating slots are formed by the other sides adjacent to the apexes and the ground plane. The input signals to the pair of patches are of equal amplitude, but 180° out of phase. The triangular nature of the patches provides a broad range of signal separation such that the resulting microstrip antenna can accommodate a broad range of input signals and radiate the same.

Claims

1. A microstrip antenna, comprising:

first and second triangular conductive planes;

a ground plane spaced from said conductive planes;

a dielectric material interposed between said conductive planes and said ground plane;

wherein radiating slots are formed by said triangular conductive planes and said ground plane; and

wherein sides of said first triangular conductive plane are parallel to respective sides of said second triangular conductive plane, an apex of said first triangular conductive plane is in juxtaposition to an apex of said second triangular conductive plane, feed pins connected to a signal source are connected to said conductive planes at said apexes of said first and second conductive planes, and said signal source presents a first signal to a first conductive plane which is 180°

out of phase from a second signal presented to a second conductive plane.

2. The microstrip antenna according to claim 1, wherein said first and second conductive planes are connected to said ground plane at sides opposite said apexes to which said signal source is connected.

3. The microstrip antenna according to claim 1, wherein said first and second conductive planes and ground plane are parallel to each other.

4. A microstrip antenna, comprising:

a signal source;

a first triangular conductive plane having an apex connected to said signal source;

a second triangular conductive plane having an apex connected to said signal source;

said first and second triangular conductive planes having respective sides parallel to each other;

a ground plane;

wherein sides of said conductive planes opposite said apexes are connected to said ground plane;

radiating slots between said triangular conductive planes and said ground plane; and

wherein said signal source provides signals to said first triangular conductive plane which are of equal amplitude, but 180°

out of phase from signals provided to said second triangular conductive plane.

5. The microstrip antenna according to claim 4, wherein said first and second triangular conductive planes are parallel to said ground plane and equally spaced therefrom.

6. The microstrip antenna according to claim 5, wherein said first and second triangular conductive planes are of equal size.

7. The microstrip antenna according to claim 6, further comprising a dielectric interposed between said ground plane and said first and second conductive planes.