GB2250648B - Phase modulation signal generator - Google Patents

Phase modulation signal generator

Info

Publication number
GB2250648B
GB2250648B GB9026745A GB9026745A GB2250648B GB 2250648 B GB2250648 B GB 2250648B GB 9026745 A GB9026745 A GB 9026745A GB 9026745 A GB9026745 A GB 9026745A GB 2250648 B GB2250648 B GB 2250648B
Authority
GB
United Kingdom
Prior art keywords
signal generator
modulation signal
phase modulation
phase
generator
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 - Fee Related
Application number
GB9026745A
Other versions
GB2250648A (en
GB9026745D0 (en
Inventor
Christopher Nigel Smith
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.)
Roke Manor Research Ltd
Original Assignee
Roke Manor Research Ltd
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 Roke Manor Research Ltd filed Critical Roke Manor Research Ltd
Priority to GB9026745A priority Critical patent/GB2250648B/en
Publication of GB9026745D0 publication Critical patent/GB9026745D0/en
Publication of GB2250648A publication Critical patent/GB2250648A/en
Application granted granted Critical
Publication of GB2250648B publication Critical patent/GB2250648B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/02—Details
    • H03C3/09—Modifications of modulator for regulating the mean frequency
    • H03C3/0908—Modifications of modulator for regulating the mean frequency using a phase locked loop
    • H03C3/0983—Modifications of modulator for regulating the mean frequency using a phase locked loop containing in the loop a mixer other than for phase detection
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/02—Details
    • H03C3/09—Modifications of modulator for regulating the mean frequency
    • H03C3/0908—Modifications of modulator for regulating the mean frequency using a phase locked loop
    • H03C3/0941—Modifications of modulator for regulating the mean frequency using a phase locked loop applying frequency modulation at more than one point in the loop
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/02—Details
    • H03C3/09—Modifications of modulator for regulating the mean frequency
    • H03C3/0908—Modifications of modulator for regulating the mean frequency using a phase locked loop
    • H03C3/095—Modifications of modulator for regulating the mean frequency using a phase locked loop applying frequency modulation to the loop in front of the voltage controlled oscillator
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/02—Details
    • H03C3/09—Modifications of modulator for regulating the mean frequency
    • H03C3/0908—Modifications of modulator for regulating the mean frequency using a phase locked loop
    • H03C3/0966—Modifications of modulator for regulating the mean frequency using a phase locked loop modulating the reference clock
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/02—Details
    • H03C3/09—Modifications of modulator for regulating the mean frequency
    • H03C3/0908—Modifications of modulator for regulating the mean frequency using a phase locked loop
    • H03C3/0975—Modifications of modulator for regulating the mean frequency using a phase locked loop applying frequency modulation in the phase locked loop at components other than the divider, the voltage controlled oscillator or the reference clock
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C2200/00—Indexing scheme relating to details of modulators or modulation methods covered by H03C
    • H03C2200/0037—Functional aspects of modulators
    • H03C2200/005—Modulation sensitivity
    • H03C2200/0054—Filtering of the input modulating signal for obtaining a constant sensitivity of frequency modulation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C2200/00—Indexing scheme relating to details of modulators or modulation methods covered by H03C
    • H03C2200/0037—Functional aspects of modulators
    • H03C2200/0075—FM modulation down to DC
GB9026745A 1990-12-08 1990-12-08 Phase modulation signal generator Expired - Fee Related GB2250648B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9026745A GB2250648B (en) 1990-12-08 1990-12-08 Phase modulation signal generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9026745A GB2250648B (en) 1990-12-08 1990-12-08 Phase modulation signal generator

Publications (3)

Publication Number Publication Date
GB9026745D0 GB9026745D0 (en) 1991-01-30
GB2250648A GB2250648A (en) 1992-06-10
GB2250648B true GB2250648B (en) 1994-12-07

Family

ID=10686724

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9026745A Expired - Fee Related GB2250648B (en) 1990-12-08 1990-12-08 Phase modulation signal generator

Country Status (1)

Country Link
GB (1) GB2250648B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5966055A (en) * 1997-02-14 1999-10-12 Lucent Technologies, Inc. Phase-shift modulation of a direct antenna-driving VCO
US7508886B2 (en) 2005-03-29 2009-03-24 Lockheed Martin Corporation System for generating a digital signal

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0153195A2 (en) * 1984-02-21 1985-08-28 Hewlett-Packard Company Frequency modulation apparatus employing a phase-locked loop

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0153195A2 (en) * 1984-02-21 1985-08-28 Hewlett-Packard Company Frequency modulation apparatus employing a phase-locked loop

Also Published As

Publication number Publication date
GB2250648A (en) 1992-06-10
GB9026745D0 (en) 1991-01-30

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19971208