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Multimode high isolation antenna system

A multi-mode antenna and antenna technology, applied in the direction of antenna, antenna coupling, antenna array, etc., can solve the problems of poor isolation of antenna, reduction of multiple input and multiple output, authentication failure, etc.

Active Publication Date: 2020-10-30
GOOGLE LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Poor isolation between antennas can significantly degrade multiple-input multiple-output (MIMO) system performance and antenna efficiency
Also, in some cases, low isolation can lead to intermodulation, which can lead to certification failures due to out-of-band spurious emissions

Method used

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  • Multimode high isolation antenna system
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  • Multimode high isolation antenna system

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0066] Example 1: A multimode antenna system comprising: a generally circular printed circuit board; a first antenna connected to the printed circuit board; a second antenna connected to the printed circuit board, a second an antenna approximately 90 degrees out of phase with the first antenna; a decoupling structure connected to the printed circuit board at a location between the first antenna and the second antenna.

example 2

[0067] Example 2: The multimode antenna system of Example 1, wherein at least one of the first antenna or the second antenna comprises: an inverted-F antenna; a first loop structure substantially aligned with the inverted-F antenna; A second loop structure is located adjacent to the inverted-F antenna, the second loop structure and the inverted-F antenna sharing a connection point to the printed circuit board.

example 3

[0068] Example 3: The multimode antenna system of Example 2, wherein the inverted-F antenna comprises: a post connected to and extending radially outward from the printed circuit board; and having an arc concentric with the printed circuit board arm.

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Abstract

The invention relates to a multimode high isolation antenna system. Multi-mode high isolation antenna systems and related methods and systems are described herein. The described antenna system is implemented on a generally circular printed circuit board and can be used for broadband and ultra-wideband applications. The multimode high isolation antenna system includes two orthogonal antennas separated by a decoupling structure. The arrangement provides high isolation between the antennas and enables five unique resonant modes of operation for a multimode high isolation antenna system.

Description

technical field [0001] This application relates to multimode high isolation antenna systems. Background technique [0002] In some electronic devices, antenna systems using multiple antennas may be implemented for wireless communication. However, the isolation between multiple antennas may be limited by the surrounding hardware of the electronic device, especially for low-band frequencies. Antenna isolation is a measure of the ratio between the power incident on the first antenna and the power delivered to the second antenna. Therefore, good isolation results in uncorrelated transmission and reception of the power-up signals of the two antennas. Poor isolation between antennas can greatly degrade multiple-input multiple-output (MIMO) system performance and antenna efficiency. Additionally, in some cases, low isolation can lead to intermodulation, which can lead to certification failures due to out-of-band spurious emissions. Contents of the invention [0003] This pape...

Claims

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Application Information

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IPC IPC(8): H01Q1/52H01Q1/24H01Q1/38H01Q25/04H01Q21/24
CPCH01Q1/521H01Q1/243H01Q1/38H01Q25/04H01Q21/24H01Q1/24H01Q21/28H01Q21/205H01Q5/22H01Q1/2283H01Q9/0421
Inventor 郑明彼得·约瑟夫·贝维拉卡
Owner GOOGLE LLC