CA2308085A1 - Phase angle data-trigonometric function value converter circuit and composite diversity receiver - Google Patents

Phase angle data-trigonometric function value converter circuit and composite diversity receiver Download PDF

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Publication number
CA2308085A1
CA2308085A1 CA002308085A CA2308085A CA2308085A1 CA 2308085 A1 CA2308085 A1 CA 2308085A1 CA 002308085 A CA002308085 A CA 002308085A CA 2308085 A CA2308085 A CA 2308085A CA 2308085 A1 CA2308085 A1 CA 2308085A1
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Canada
Prior art keywords
angle data
sine
cosine
trigonometric function
angle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002308085A
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French (fr)
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CA2308085C (en
Inventor
Hideaki Takahashi
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NEC Corp
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Individual
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Filing date
Publication date
Priority claimed from JP8186080A external-priority patent/JPH1032531A/en
Application filed by Individual filed Critical Individual
Publication of CA2308085A1 publication Critical patent/CA2308085A1/en
Application granted granted Critical
Publication of CA2308085C publication Critical patent/CA2308085C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Radio Transmission System (AREA)

Abstract

Disclosed is a phase angle data-trigonometric function value converter circuit for computing a trigonometric function value corresponding to an angle that an angle of 360 degrees is divided into n equal parts, where n is an integer, which has: means for converting the integer n into angle data represented by binary system; a sine value data memory which stores sine values corresponding to the angle data from zero degree to 90 degrees and outputs sine values corresponding to the angle data to be input thereto; a cosine value data memory which stores cosine values corresponding to the angle data from zero degree to 90 degrees and outputs cosine values corresponding to the angle data to be input thereto; a selector to which the sine values output from the sine value data memory and the cosine values output from the cosine value memory are input and which selects the sine values or the cosine values according to the angle data and outputs them; and means for adding a polarity sign to the sine values or cosine values output from the selector according to the angle data.
CA002308085A 1996-07-16 1997-07-16 Phase angle data-trigonometric function value converter circuit and composite diversity receiver Expired - Fee Related CA2308085C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP8-186080 1996-07-16
JP8186080A JPH1032531A (en) 1996-07-16 1996-07-16 Phase angle data and trigonometric function conversion circuit, and synthesis diversity receiver
CA002210603A CA2210603C (en) 1996-07-16 1997-07-16 Phase angle data-trigonometric function value converter circuit and composite diversity receiver

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA002210603A Division CA2210603C (en) 1996-07-16 1997-07-16 Phase angle data-trigonometric function value converter circuit and composite diversity receiver

Publications (2)

Publication Number Publication Date
CA2308085A1 true CA2308085A1 (en) 1998-01-16
CA2308085C CA2308085C (en) 2002-08-20

Family

ID=25679488

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002308085A Expired - Fee Related CA2308085C (en) 1996-07-16 1997-07-16 Phase angle data-trigonometric function value converter circuit and composite diversity receiver

Country Status (1)

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CA (1) CA2308085C (en)

Also Published As

Publication number Publication date
CA2308085C (en) 2002-08-20

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