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Antenna system using capacitively coupled compound loop antennas with antenna isolation provision

An antenna system and antenna isolation technology, applied to loop antennas, independent non-interactive antenna combinations, and devices that enable antennas to work in different bands at the same time, can solve the problem of reduced transmission and reception quality, reduced efficiency, and serious size constraints. question

Active Publication Date: 2017-02-22
DOCKON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in configurations with multiple antennas, size constraints tend to become severe, and interference effects caused by electromagnetic coupling between the antennas can significantly degrade transmit and receive quality
At the same time, efficiency can decrease in many situations where multiple paths are powered and power consumption increases

Method used

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  • Antenna system using capacitively coupled compound loop antennas with antenna isolation provision
  • Antenna system using capacitively coupled compound loop antennas with antenna isolation provision
  • Antenna system using capacitively coupled compound loop antennas with antenna isolation provision

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Embodiment Construction

[0025] In view of the known limitations associated with conventional antennas, especially with regard to radiation efficiency, a composite loop antenna (CPL), also known as a modified loop antenna, has been designed to reduce the cost of Greater efficiency of the antenna provides both transmit and receive modes. Examples of structures and implementations of CPL antennas are described in U.S. Patent Nos. 8,144,065 filed March 27, 2012, U.S. Patent Nos. 8,149,173 filed April 3, 2012, and In US Patent No. 8,164,532. Refer below figure 1 The example shown in outlines the key features of a CPL antenna.

[0026] figure 1 An example of a planar CPL antenna 100 is shown. In this example, a planar CPL antenna 100 is printed on a printed circuit board (PCB) 104 and includes a loop element 108 which in this case is formed along an open base portion with two ends 112 and 116 provided. traces of the rectangle edges. One end 112 is a feeding point of the antenna where current is fed. ...

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Abstract

An antenna system is provided, including a first antenna, a second antenna, a ground plane, and a resonant isolator coupled to the first and second antennas. Each of the antennas is configured to be a capacitively-coupled compound loop antenna, and the resonant isolator is configured to provide isolation between the two antennas at resonance. The two antennas may be symmetrical or asymmetrical and include a first element that emits a magnetic field and a second element that generates an electrical field that is orthogonal to the magnetic field. The radiating element of the second element may be capacitively coupled to the remainder of the second element. The resonate isolator may be comprised of a single conductive element or two conductive elements that are capacitively coupled.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Patent Application No. 14 / 253,678, filed April 15, 2014. technical field [0003] The present disclosure relates to compound loop antennas. Background technique [0004] As new generations of cellular telephones and other wireless communication devices become smaller and embedded with increasing applications, new antenna designs are required to address the inherent limitations of these devices and enable new functionality. With conventional antenna structures, a certain physical volume is required to create a resonant antenna structure at a certain frequency and with a certain bandwidth. However, efficient implementation of such antennas often faces size constraints due to the limited space available in the device. [0005] Antenna efficiency is one of the important parameters to determine the performance of a device. Specifically, radiation efficiency is a measure that desc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q21/30H01Q21/28H01Q9/30H01Q9/42
CPCH01Q1/521H01Q5/371H01Q7/00H01Q5/307H01Q9/0407H01Q21/30
Inventor 乔纳森·尼尔·布兰吉耶赖安·詹姆斯·奥尔西马修·罗伯特·福斯特
Owner DOCKON