Method for carrying out butler matrix

A matrix and network technology, applied in the field of Butler matrix beamforming network, which can solve problems such as difficulty and synthesis loss
CN101227216AInactive Publication Date: 2008-07-23TENXC WIRELESS
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
TENXC WIRELESS
Publication Date
2008-07-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

A novel implementation of a planar 4x4 RF Butler matrix layout is disclosed that permits, by moving the beam ports to the interior of the layout, for combining beam ports that are not disposed on the same side of the layout without the imposition of long delay times or crossover points. The implementation admits of using microstrip and / or stripline technologies.
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Description

technical field

[0001] [1] The present invention relates to a Butler matrix beamforming network, and more specifically to an improved structure of a 4×4 Butler matrix. Background technique

[0002] [2] In wireless communication systems, sector antennas are gradually replaced by phased array or beamforming antennas. Such an antenna comprises an array of fixed antenna elements connected by a beamforming network between the antenna elements and beam ports. The beam pattern of the antenna is determined by the phase and amplitude relationship of the beamforming network. The phase and magnitude relationship of the signals between the antenna elements and the beam ports can be adjusted to generate shaped beam patterns. So, for example, by simply adjusting the phase and amplitude of the antenna signal at different slots, a single antenna array will generate center, left and right beams of antenna energy.

[0003] [3] Phase and amplitude adjustments are usually effected by a beamf...

Claims

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