The envelope detector for detecting an envelope of a digital modulation signal in accordance with an embodiment of the present invention, includes: a mixer configured to receive the digital modulation signal and output a square signal squaring the digital modulation signal when being applied with bias voltage; a bias voltage applying unit configured to apply …

Legal parties

Inventors (applicants): Tae-Jin Chung
Assignees (initial): Electronics and Telecommunications Research Institute (Daejeon, KR)
Agents: William Park & Associates Patent Ltd. (attorney)

The application was examined by Arnold Kinkead (USPTO dept. 2843)


  • 1. An envelope detector for detecting an envelope of a digital modulation signal, comprising: …
  • 2. The envelope detector of claim 1 , wherein the bias voltage applying unit includes …
  • 3. The envelope detector of claim 1 , wherein the mixer is a diode double …

International priority data

KR: 10-2011-0115414 / Nov. 7, 2011 (national)

Cited documents


  • EP 1 841 058 A1, Mar. 1, 2007
  • Thomson US 4307347 A, Dec. 1, 1981
  • Kim US 2006/0121871 A1, Jun. 1, 2006
  • Zinser US 7639821 B2 / 381/15, Dec. 1, 2009
  • Toth US 5563550 A / 329/347, Oct. 1, 1996
  • Arnborg US 2009/0322312 A1, Dec. 1, 2009
  • KR 10-2006-0063305, Jun. 1, 2006
  • Vorenkamp US 7821581 B2, Oct. 1, 2010
  • KR 10-2008-0015343, Feb. 1, 2008
  • JP 2003-309777, Oct. 1, 2003

Brief Description of the Drawings

FIG. 1 is a block diagram illustrating a configuration of a general heterodyne receiver. FIG. 2 is an envelope detector circuit using a single diode in accordance with the related …


Cross-Reference to Related Applications

The present application claims priority of Korean Patent Application No. 10-2011-0115414, filed on Nov. 7, 2011, which is incorporated herein by reference in its …

Description of Specific Embodiments

The above-mentioned objects, features, and advantages will be described in detail with reference to the accompanying drawings. Therefore, exemplary embodiments will be described in detail with reference to the accompanying …

More details about Envelope Detector

Miscellaneous patent data

The grant number is 08854124 (publication number), the recorded agent's company is William Park & Associates Patent Ltd., similar classification categories are Including logic element (e.g., logic gate or flip-flop, means of synchronous gating arrangements, Input signal combined with local oscillator or carrier frequency signal, Modifications of demodulators to reject or remove amplitude variations by means of locked-in oscillator circuits, counting or integrating cycles of oscillations, means of diodes, e.g. Foster-Seeley discriminator, Input signal split into plural signals, means of transit-time tubes, Demodulation of angle-modulated oscillations, deflecting an electron beam in a discharge tube, discharge tubes, means of non-linear two-pole elements, Balanced arrangements, Including discrete semiconductor device, Using feedback to reduce distortion, noise or other interference, the exemplary claims include number 1, the assignee company is Electronics and Telecommunications Research Institute located in Daejeon (KR), the assignee is a foreign company or corporation, the application publication date is Sep. 13, 2012, the grant date is Oct. 7, 2014 (publication date), the invention details are shown in 16 figures, the patent is illustrated by 8 drawings, the invention is named Envelope Detector, includes the following drawings: Envelope detector circuit using a single, Configuration diagram of a coherent, Block diagram illustrating a configuration, Envelope Detector, claims 1-5 comprise the invention scope, the examination was conducted by Arnold Kinkead (2843 USPTO department), invented by Tae-Jin Chung, the primary classification Amplitude Modulation Demodulator has been designated to the document, the inventor's first name is Tae-Jin, and his last name is Chung, the patent particularly claims an envelope detector for detecting an envelope of a digital modulation signal…, the applicant's name is Chung Tae-Jin, the patent extension term is 65 days, numbered 13/613,335 (application).

Invention classification information

The invention is classified under Demodulation of amplitude-modulated oscillations, With balanced mixer, Demodulator circuits, Receiver circuits, Amplitude Modulation Demodulator, Receivers, Frequency modifying or conversion, Discriminator or demodulator, of diodes. The designated search classifications include Phase Shift Keying or Quadrature Amplitude Demodulator, Signal selection based on frequency, AM or both AM and angle final modulation, Receivers, Discriminator or demodulator, Including diode demodulator device, Amplitude Modulation Demodulator, Frequency modifying or conversion, Including three or more terminal discrete semiconductor demodulator device, With balanced mixer.

Patent details
Publication number 08854124
Publication date Oct. 7, 2014
Kind code B2
Application number 13/613,335
Application date Sep. 13, 2012
Application type U
Application series code 13
Extension term 65
National classification 329/347
Total number of claims 5
Exemplary claims 1
Number of drawings 8
Number of figures 16
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