Group antenna with narrower side lobes in the horizontal plane

• US 20020057223A1
• Filed: 11/05/2001
• Published: 05/16/2002
• Est. Priority Date: 11/06/2000
• Status: Active Grant

• Current Assignee: Optis Cellular Technology LLC (Brevet Capital)
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Hook, Anders
• Granted Patent: US 6,611,239 B2
• Time in Patent Office: Days
• US Class Current: 343/700MS
• CPC Class Codes: H01Q 21/064 using horn or slot aerials slotted waveguides arrays H01Q21/005
• CPC Class Codes: H01Q 21/065 Patch antenna array
• CPC Class Codes: H01Q 21/20 the units being spaced along or adjacent to a curvilinear path slotted waveguide arrays H01Q21/005; circularly or helically slotted waveguides H01Q21/0062
• CPC Class Codes: H01Q 21/205 providing an omnidirectional coverage turnstile aerials H01Q21/26
• CPC Class Codes: H01Q 3/02 using mechanical movement of antenna or antenna system as a whole

Abstract

The invention relates to an antenna device comprising a group antenna (310) with radiating elements (340-347) in M rows and N columns M, where N<M, which group antenna (310) has a width measurement (b) and a height measurement (h). The group antenna (310) is so arranged in the antenna device that the projection (P) of the group antenna in the sideways direction of the antenna in the horizontal plane (210) exceeds the width measurement (b) of the group antenna, whereby the group antenna is given a narrower main lobe in the horizontal plane (210). A group antenna according to the invention can, in addition, be incorporated in an antenna device (500,700,800) which comprises an additional number of similar group antennas (510-532; 710-720; 810-820), arranged on the antenna device along a surface (730,830) that is circular or a part of a circle, arranged in such a way that the respective projections of the additional group antennas in the sideways direction of the antenna in the horizontal plane also exceed the width measurements of the respective group antennas, whereby the additional group antennas are given narrower main lobes in the horizontal plane.

Claims

1. An antenna device comprising a group antenna (310) with radiating elements (340-347) in M rows and N columns, where N<

M, which group antenna (310) has a width measurement (b) and a height measurement (h), characterized in that the group antenna (310) is so arranged in the antenna device that the extent of the group antenna sideways, projected in the horizontal plane (210), exceeds the width measurement (b) of the group antenna, whereby the group antenna is given a narrower main lobe in the horizontal plane (210).

2. An antenna device (500, 700, 800) according to claim 1, further comprising a number of group antennas (510-532;

710-720;

810-820) with N*M radiating elements, with a width measurement (b) and a height measurement (h), arranged on the antenna device around a surface that is circular or part of a circle (730,830), further arranged in such a way that the respective projections of the additional group antennas in the sideways direction of the antenna in the horizontal plane exceed the width measurements of the respective group antennas, whereby the additional group antennas are given narrower main lobes in the horizontal plane.

3. An antenna device according to claim 2, in which the group antennas (710,720;

810,820) incorporated in the antenna device are curved on the surface (730,830) that is circular or part of a circle.

4. An antenna device according to any one of claims 1-3, in which a number of the group antennas comprise radiating elements of the patch type.

5. An antenna device according to any one of claims 1-3, in which a number of the group antennas comprise radiating elements of the slot type.