Adaptable antenna

• US 4,992,799 A
• Filed: 09/28/1989
• Issued: 02/12/1991
• Est. Priority Date: 09/28/1989
• Status: Expired due to Fees

• Current Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Garay, Oscar M.
• Primary Examiner(s): Hille, Rolf
• Assistant Examiner(s): LE, HOANGANH T
• Application Number:
  US07/414,168
• Time in Patent Office: 502 Days
• Field of Search: 343/702, 343/853, 343/866, 343/869, 343/871, 343/700 MS, 343/724
• US Class Current: 343/702
• CPC Class Codes: H01Q 1/243 with built-in antennas
• CPC Class Codes: H01Q 7/00 Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop

Abstract

An antenna with a first and second portions (16 and 18) that are rotatably movable with respect to each other. The antenna may be rotated from a first position to a second position and from the second position to the first position so that it operates as two antennas while in the first position and as a loop antenna while in the second position.

Claims

1. An antenna system comprising:

a first antenna portion;

a second antenna portion rotatably coupled to the first antenna portion, the antenna system being movable from an open position to a closed position, in which the first antenna portion is coupled to the second antenna portion to operate as a loop antenna, and movable from the closed position to the open position;

a first patch antenna element coupled to the first antenna portion; and

a second patch antenna element coupled to the second antenna portion, so that the antenna system is coupled to operate as two patch antennas when the antenna system is in the open position.

2. The antenna of claim 1, wherein the first patch antenna element and the second patch antenna element have different resonant frequencies.

3. The antenna of claim 2, wherein the first patch antenna portion operates in a transmission mode and the second patch antenna portion operates in a reception mode.

4. The antenna of claim 1, wherein the antenna system operates as two unidirectional patch antennas when the antenna system is in the open position.

5. An antenna system comprising:

a first antenna portion;

a second antenna portion rotatably coupled to the first antenna portion so that the second antenna portion may be moved from an open position to a second closed position and from the closed position to the open position;

a patch antenna element coupled to the first antenna portion, so that the antenna system operates as a patch antenna when the antenna system is in the open position, and as a loop antenna when the antenna system is in the closed position.

6. The antenna system of claim 5, wherein the antenna system operates as a unidirectional patch antenna when it is in the open position.