ES433036A1 - A device for phase modulation. (Machine-translation by Google Translate, not legally binding) - Google Patents

A device for phase modulation. (Machine-translation by Google Translate, not legally binding)

Info

Publication number
ES433036A1
ES433036A1 ES433036A ES433036A ES433036A1 ES 433036 A1 ES433036 A1 ES 433036A1 ES 433036 A ES433036 A ES 433036A ES 433036 A ES433036 A ES 433036A ES 433036 A1 ES433036 A1 ES 433036A1
Authority
ES
Spain
Prior art keywords
modulation signal
signal
translation
machine
legally binding
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.)
Expired
Application number
ES433036A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nokia Spain SA
Original Assignee
Alcatel Espana SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Alcatel Espana SA filed Critical Alcatel Espana SA
Publication of ES433036A1 publication Critical patent/ES433036A1/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/38—Angle modulation by converting amplitude modulation to angle modulation
    • H03C3/40—Angle modulation by converting amplitude modulation to angle modulation using two signal paths the outputs of which have a predetermined phase difference and at least one output being amplitude-modulated

Landscapes

  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Amplitude Modulation (AREA)

Abstract

A device for phase modulation in which two quadrature carriers are modulated in amplitude with, respectively, the sine value and the cosine value of a band-limited and analog modulation signal, by means of a balanced modulator each, and wherein the resulting modulation products are summed vectorially, characterized in that two signals [a2 (t), b2 (t)] are derived from the modulation signal (f (t)), with a signal (a2 (t)) being the cosine value sampled of the modulation signal, and the other signal (b2 (t)) being the sampled sine of the modulation signal. From each of these two signals (a2 (t), b2 (t)), two partial spectra (a3 (t), b3 (t)) are derived that are band-bound, but contain all the information of the modulation signal, by means of a low-pass filter (lp1, lp2); said partial spectra feed, each one, one of the balanced modulators (m1, m2). (Machine-translation by Google Translate, not legally binding)
ES433036A 1973-12-19 1974-12-18 A device for phase modulation. (Machine-translation by Google Translate, not legally binding) Expired ES433036A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732363214 DE2363214C3 (en) 1973-12-19 1973-12-19 Arrangement for phase modulation

Publications (1)

Publication Number Publication Date
ES433036A1 true ES433036A1 (en) 1976-11-16

Family

ID=5901263

Family Applications (1)

Application Number Title Priority Date Filing Date
ES433036A Expired ES433036A1 (en) 1973-12-19 1974-12-18 A device for phase modulation. (Machine-translation by Google Translate, not legally binding)

Country Status (4)

Country Link
BE (1) BE823551A (en)
DE (1) DE2363214C3 (en)
ES (1) ES433036A1 (en)
FR (1) FR2255745A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7709917A (en) * 1977-09-09 1979-03-13 Philips Nv SYSTEM FOR DATA TRANSMISSION USING AN ANGLE MODULATED CARRIER OF CONSTANT AMPLITUDE.
US4560961A (en) * 1983-01-26 1985-12-24 Republic Electronics, Inc. Method and means for generating pulse compression pulses
US4540958A (en) * 1983-09-30 1985-09-10 International Telephone And Telegraph Corporation Zero if frequency-modulator
DE3716064C2 (en) * 1987-05-14 1997-01-23 Daimler Benz Aerospace Ag Modulator for generating an amplitude-sampled high-frequency signal
US4870374A (en) * 1988-04-13 1989-09-26 E-Systems, Inc. Modulator producing phase modulation by combining amplitude modulated signals

Also Published As

Publication number Publication date
AU7616874A (en) 1976-06-10
DE2363214B2 (en) 1978-11-16
DE2363214A1 (en) 1975-07-03
BE823551A (en) 1975-06-19
FR2255745B1 (en) 1980-04-18
DE2363214C3 (en) 1979-07-12
FR2255745A1 (en) 1975-07-18

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