Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Antenna card for controlling and tuning antenna isolation to support carrier aggregation

An antenna, coupled current technology, applied in the third generation partnership project long-term evolution network, wireless or cellular communication antenna field, can solve the problem of mutual coupling increase

Inactive Publication Date: 2016-10-12
INTEL IP CORP
View PDF4 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These antennas use the entire printed circuit board (PCB) for radiation and the mutual coupling increases significantly when considered for use in the low frequency bands in Long Term Evolution (LTE)

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Antenna card for controlling and tuning antenna isolation to support carrier aggregation
  • Antenna card for controlling and tuning antenna isolation to support carrier aggregation
  • Antenna card for controlling and tuning antenna isolation to support carrier aggregation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] Antenna isolation is very important for the antenna front end of smartphones and similar mobile devices. Therefore, the development of reliable, general and practical isolation mechanisms is the key to success. Practical problems arise when implementing decoupling methods into products. Many methods rely on well-defined near-field distributions and symmetries to achieve decoupling. Perturbations in the near field will seriously hinder performance. From a smart device front-end antenna perspective, the most difficult requirement is in-band continuous carrier aggregation (CA), since the system relies on narrowband tuned antennas for isolation. In this context, a narrowband antenna refers to an antenna that covers a smaller portion of the frequency band than either the RX antenna or the TX antenna at any given moment.

[0019] For the low frequency bands (699-960MHz) used in LTE, the antenna uses essentially the entire printed circuit board (PCB) for radiation, and the ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to an antenna card for controlling and tuning antenna isolation to support carrier aggregation. An apparatus and method to provide isolation between a first antenna and a second antenna, each of which is located on a ground plane. A slot that is tunable by a variable reactance is located on the ground plane, the slot not being appreciably resonant at the operating frequency of the first antenna and the second antenna. The antennas operate in an orthogonal mode. Varying the slot reactance varies the electrical distance over which the coupling current between the two antennas flows. Increased RF isolation to a desired magnitude results by maintaining the orthogonality at desired bands. The RF isolation can be measured and a departure from the desired magnitude of isolation causes the reactance to be varied to increase the RF isolation back to the desired magnitude. The antennas and the slot are placed at locations on the ground plane of high current density.

Description

technical field [0001] Some embodiments relate to antennas for wireless or cellular communications. Some embodiments relate to Third Generation Partnership Project (3GPP) Long Term Evolution (LTE) networks. Background technique [0002] Mutual coupling between multiple antennas disposed on the same platform of a mobile device is a limiting factor for multiple-input multiple-output (MIMO) antenna designs, which require a modest level of isolation. These antennas use the entire printed circuit board (PCB) for radiation and the mutual coupling increases significantly when considered for use in the low frequency bands in Long Term Evolution (LTE). In specific applications, even higher levels of isolation than currently used are required. As an example, at least one architecture requires 25dB isolation as antenna isolation required for all operating frequency bands (even low frequency bands). There is a need for an antenna isolation structure capable of controlling antenna iso...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H01Q1/52H01Q1/22
CPCH01Q1/22H01Q1/521H01Q1/525H01Q1/243H01Q1/38H01Q21/28H04B1/40H04B7/0404
Inventor 保罗·奥勒森亚历山德鲁·丹尼尔·泰托莫里斯科格特·佩德森埃米尔·布斯克戈德萨曼莎·卡普拉·德尔·巴里奥佩范德·巴赫拉姆兹皮特·邦德格拉德西蒙·斯文森欧勒·雅盖尔斯基博扬·亚纳基夫
Owner INTEL IP CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com