Supercharge Your Innovation With Domain-Expert AI Agents!

Communication system and control circuit therein

A communication system and control circuit technology, applied in the transmission system, wireless communication, transmission monitoring, etc., to achieve the effect of reducing component costs and saving design space

Active Publication Date: 2014-02-12
WISTRON CORP
View PDF3 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the current portable electronic devices cannot avoid exposing the user to an environment where electromagnetic waves are transmitted. For example, when a mobile phone is talking, electromagnetic waves will be transmitted near the user's head

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
  • Communication system and control circuit therein
  • Communication system and control circuit therein
  • Communication system and control circuit therein

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] figure 1 A schematic diagram of a communication system 100 according to an embodiment of the present invention is shown. Such as figure 1 As shown, the communication system 100 includes: a baseband processor (Baseband Processor) 110 , a radio frequency transceiver (Radio Frequency Transceiver) 120 , a power amplifier (Power Amplifier) ​​130 , a control circuit 150 and an antenna 190 . The baseband processor 110 can generate a baseband signal S1. The radio frequency transceiver 120 can modulate the baseband signal S1 to generate a radio frequency signal S2. Then, the power amplifier 130 amplifies the RF signal S2 to generate an amplified signal S3. In a preferred embodiment, both the radio frequency signal S2 and the amplified signal S3 are AC (Alternating Current, AC) signals.

[0036] The control circuit 150 includes: a coupler (Coupler) 152 , an AC to DC converter (AC to DC Converter) 154 , a comparator (Comparator) 156 and an attenuator (Attenuator) 158 . The co...

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

A communication system includes a baseband processor, an RF (Radio Frequency) transceiver, a power amplifier, an antenna, and a control circuit. The power amplifier generates an amplified signal. The control circuit includes a coupler, an AC-to-DC (Alternating Current to Direct Current) converter, a comparator, and an attenuator. The coupler generates a transmission signal and a coupling signal according to the amplified signal. The AC-to-DC converter is coupled to the coupler, and converts the coupling signal into a DC (Direct Current) signal. The comparator compares a DC voltage of the DC signal with a reference voltage so as to generate a control signal. The attenuator is coupled between the coupler and the antenna, and attenuates or does not attenuate the transmission signal according to the control signal.

Description

technical field [0001] The present invention relates to a communication system and a control circuit, in particular to a communication system and a control circuit capable of reducing a specific absorption rate (Specific Absorption Rate, SAR). Background technique [0002] With the development of mobile communication technology, portable electronic devices have become more and more common in recent years, such as portable computers, mobile phones, multimedia players and other portable electronic devices with mixed functions. In order to meet people's needs, portable electronic devices usually have a wireless communication function. Some cover long-distance wireless communication ranges, for example: mobile phones use 2G, 3G, LTE (Long Term Evolution, Long Term Evolution) systems and their frequency bands of 700MHz, 850MHz, 900MHz, 1800MHz, 1900MHz, 2100MHz, 2300MHz and 2500MHz Communication, while some cover short-distance wireless communication range, such as: Wi-Fi, Bluet...

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
Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/24H04W52/52
CPCH04B17/102H04B17/13
Inventor 王银财
Owner WISTRON CORP
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com