Abstract

Provided is a Polar modulation apparatus which compensates for output characteristics of a power amplifier. A data generator generates an amplitude component signal and a phase component signal. A phase modulator generates a phase modulated signal obtained by phase modulating the phase component signal. An adder adds an amplitude offset voltage to the amplitude component …

Legal parties

Party
Inventors (applicants): Yoshihiro Hara
Assignees (initial): Panasonic Corporation (Osaka, JP)
Agents: Wenderoth, Lind & Ponack, L.L.P. (attorney)

The application was examined by Arnold Kinkead (USPTO dept. 2817)

Claims

  • 1. A polar modulation apparatus comprising: …
  • 2. The polar modulation apparatus according to claim 1 , wherein the first hetero-junction bipolar …
  • 3. The polar modulation apparatus according to claim 1 , wherein the second hetero-junction bipolar …

International priority data

JP: 2009-000431 / Jan. 5, 2009 (national)

Cited documents

Patents

  • Morimoto et al. US 7499502 B2 / 375/297, Mar. 1, 2009
  • JP 2005-223877, Aug. 1, 2005
  • Vinayak et al. US 7783269 B2 / 455/126, Aug. 1, 2010
  • Epperson et al. US 7109791 B1, Sep. 1, 2006
  • JP 2008-61231, Mar. 1, 2008
  • Sugiyama et al. US 2005/0146379 A1, Jul. 1, 2005
  • Raab US 6256482 B1, Jul. 1, 2001
  • Hara et al. US 2008/0031384 A1, Feb. 1, 2008

Brief Description of the Drawings

FIG. 1 is a block diagram showing an exemplary configuration of a polar modulation apparatus 1 according to a first embodiment of the present invention. FIG. 2 is a circuit …

Description

Technical Field

The present invention relates to a polar modulation apparatus for use in communication devices such as mobile phones and wireless LAN devices, and more particularly, a polar modulation apparatus operable …

First Embodiment

FIG. 1 is a block diagram illustrating an exemplary configuration of a polar modulation apparatus 1 according to a first embodiment of the present invention. In FIG. 1 , the polar …

Second Embodiment

FIG. 14 is a block diagram showing an exemplary configuration of a communication device 200 according to a second embodiment of the present invention. Referring to FIG. 14 , the communication …

More details about Polar Modulation Apparatus and Communication Device

Miscellaneous patent data

The claim number 1 is selected as exemplary, similar classification categories are simulated by circuit comprising active element with at least three electrodes, e.g. reactance-tube circuit, Crystal oscillator type, Modifications of modulator to reduce distortion, e.g. by feedback, and clearly applicable to more than one type of modulator, Push-pull circuit, Nonlinearity reduction or compensation, the element being a current-dependent inductor, converting amplitude modulation to angle modulation, modulating signal applied to collector, Including logic element, Suppressed carrier double sideband type, the published inventor's name is Yoshihiro Hara, the assignee is a foreign company or corporation, the application was examined by Arnold Kinkead (2817 USPTO department), originally classified under Including amplitude modulator, the invention details are shown in 17 figures, the grant publication date is Jun. 18, 2013, 11 claims comprise the protection scope, the assignee organization is Panasonic Corporation, located in Osaka (JP), the invention description is illustrated by 14 drawings, the patent grant was extended by 229 days, numbered 13/142,489 (application), the patent particularly claims a polar modulation apparatus comprising…, the known agent's company is Wenderoth, Lind & Ponack, L.L.P., developed by Yoshihiro Hara, the drawings include the following: Polar Modulation Apparatus and Communication, Block diagram showing an exemplary, Circuit diagram showing an exemplary, Diagram showing the VCE-IC characteristic, the invention is titled Polar Modulation Apparatus and Communication Device, the application publication date is Nov. 20, 2009, the applicant's last name is Hara, and his first name is Yoshihiro, the grant number is 08466755.

Invention classification information

The invention is classified under Including particular biasing arrangement, Including amplitude modulator, Phase Modulator, Power amplifier, With Control of Power Supply or Bias Voltage, Plural modulation, Amplitude limiting or bias voltage, by converting amplitude modulation to angle modulation, Including signal feedback means, Different bias control means for different stages of cascade amplifier. The designated search classifications include Including amplitude modulator, Phase Modulator, Different bias control means for different stages of cascade amplifier, Power amplifier, With Control of Power Supply or Bias Voltage, Including signal feedback means, Including particular biasing arrangement, Plural modulation, Amplitude limiting or bias voltage.

Patent details
Publication number 08466755
Publication date Jun. 18, 2013
Kind code B2
Application number 13/142,489
Application date Nov. 20, 2009
Application type U
Application series code 13
Int. pub. country WO
Int. pub. number WO2010/076845
Int. publication Jul. 8, 2010
Int. filing country WO
Int. filing PCT/JP2009/006272
Filed internationally Nov. 20, 2009
National stage date Jun. 28, 2011
Extension term 229
National classification 332/145
Total number of claims 11
Exemplary claims 1
Number of drawings 14
Number of figures 17
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