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Method and apparatus for forming millimeter wave phased array antenna

A phased array antenna and waveguide technology, which is applied in the directions of antennas, antenna arrays, connecting devices, etc., can solve problems such as the inability to accurately determine the deviation of the track of the series feeder beam.

Active Publication Date: 2006-11-01
THE BOEING CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Without this knowledge of the frequency of the next beam hop, the deviation from the tandem-fed beam orbit cannot be precisely determined

Method used

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  • Method and apparatus for forming millimeter wave phased array antenna
  • Method and apparatus for forming millimeter wave phased array antenna
  • Method and apparatus for forming millimeter wave phased array antenna

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Embodiment Construction

[0027] The following description of the preferred embodiments is merely exemplary in nature and is in no way meant to limit the invention, its application or uses.

[0028] Referring to Figure 4, an antenna system 10 is shown in accordance with a preferred embodiment and method of the present invention. The antenna system 10 forms an antenna capable of operating at millimeter waves, more specifically, at 44 GHz (Q-band) and conforming to the MILSTAR protocol, and does not require prior knowledge of the next beam hopping frequency for use in MILSTAR applications. The antenna system 10 forms a dual beam system with 524 individual antenna modules spaced very closely together to be able to operate at millimeter wave frequencies, preferably around 44 GHz, and at scan angles up to (or beyond) 60 degrees Does not suffer from noticeable beaming and performance degradation. The antenna system generally comprises a chassis 11 within which is supported a feed network 12 and associated e...

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Abstract

A phased array antenna system having a corporate waveguide distribution network stripline printed circuit board. The stripline printed circuit board receives electromagnetic (EM) wave energy from a 1X4 waveguide distribution network input plate and distributes the EM wave energy to 524 radiating elements. The stripline circuit board enables extremely tight spacing of independent antenna radiatingelements that would not be possible with a rectangular air filled waveguide. The antenna system enables operation at millimeter wave frequencies, and particularly at 44 GHz, and without requiring theuse of a plurality of look-up tables for various phase and amplitude delays, that would otherwise be required with a rectangular, air-filled waveguide distribution structure. The antenna system can be used at millimeter wave frequencies, and in connection with the MILSTAR communications protocol, without the requirement of knowing, in advance, the next beam hopping frequency employed by the MILSTAR protocol.

Description

technical field [0001] This invention relates to antennas, and more particularly to electrically scanned dual beam phased array antennas capable of operating at millimeter wavelengths and incorporating a common stripline waveguide structure. Background technique [0002] A phased array antenna includes multiple radiating antenna elements, individual element control circuits, signal distribution network, signal control circuits, power supply, and mechanical support structure. The overall gain, effective isotropic radiated power, and scanning and sidelobe requirements of an antenna are directly related to the number of elements in the antenna aperture, the spacing of the elements, the performance of the elements and the element electronics. In many applications, thousands of individual components / control circuits are required to obtain the desired antenna performance. A typical phased array antenna includes separate electronics assemblies for the radiating elements and contro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q21/00H01P5/107H01Q21/06
CPCH01Q21/065
Inventor 朱莉奥·A·纳瓦罗约翰·B·奥康纳尔理查德·N·博斯特威克
Owner THE BOEING CO
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