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Demodulation apparatus and method for operating the same

A technology of demodulation device and adjustment unit, applied in amplitude modulation oscillation demodulation components, amplitude demodulation of electronic deflection, amplitude demodulation of nonlinear multipole elements, etc., can solve the problem of difficulty in generating a reference voltage, etc.

Inactive Publication Date: 2014-05-14
LSIS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the case of applying a high power signal, a signal with a high voltage level is filtered at node V1, and it is difficult to generate a reference voltage, and therefore, it is difficult to demodulate a signal with a high range of power

Method used

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  • Demodulation apparatus and method for operating the same
  • Demodulation apparatus and method for operating the same
  • Demodulation apparatus and method for operating the same

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Embodiment Construction

[0056] The following disclosure simply illustrates the principles of the invention. Therefore, those skilled in the art can implement the principle of the present invention and create various devices included in the concept and scope of the present invention even if the devices are not clearly described or illustrated in the specification. Likewise, it should be understood that the conditional terms and examples described herein are considered in a descriptive sense only and not for limitation.

[0057] Likewise, it should be understood that all detailed descriptions for specific embodiments, as well as principles, viewpoints and embodiments are intended to include structural and functional equivalents. Likewise, it is to be understood that such equivalents include all devices invented to perform the same function, regardless of whether such equivalent structures are developed in the future or are currently known.

[0058] Hereinafter, a demodulation apparatus capable of demo...

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Abstract

A demodulation apparatus comprises: an envelope detecting unit configured to receive a signal from the outside and detect an envelope signal from the received signal; a reference voltage generating unit configured to generate a reference voltage on the basis of the detected envelope signal; a comparator configured to output a pulse signal on the basis of the envelope signal detected by the envelope detecting unit and the reference voltage generated by the reference voltage generating unit; and an input signal adjusting unit connected with an envelope signal input terminal of the comparator to selectively adjust a magnitude of the envelope signal input to the comparator.

Description

technical field [0001] The present invention relates to a demodulation device, in particular to a demodulation device with multiple input power levels and modulation indices and its operating method. Background technique [0002] Generally, the demodulation device is used to receive a modulated radio frequency (hereinafter referred to as RF) signal and restore it to an original frequency signal. In particular, a typical radio frequency identification (hereinafter referred to as RFID) technology using an RF signal reads information from a tag having unique identification information or writes information to the tag in a non-contact manner, so that tags attached thereto The tagged items or animals can be identified, tracked or managed. [0003] That is, the RFID technology refers to a technology for remotely identifying information by using radio waves. In order to implement such RFID technology, RFID tags and RFID readers are required. The RFID tag mentioned earlier includ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/00
CPCH04L27/06H04B5/0062H03D1/28H03D1/14H03D1/02
Inventor 郑喆镐金永汉
Owner LSIS CO LTD
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