GB755721A - Radio wave pulse system and method - Google Patents

Radio wave pulse system and method

Info

Publication number
GB755721A
GB755721A GB29558/51A GB2955851A GB755721A GB 755721 A GB755721 A GB 755721A GB 29558/51 A GB29558/51 A GB 29558/51A GB 2955851 A GB2955851 A GB 2955851A GB 755721 A GB755721 A GB 755721A
Authority
GB
United Kingdom
Prior art keywords
pulse
network
amplitude
networks
lattice
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
GB29558/51A
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.)
KAROLINE HELENE MATHILDE CAUER
Original Assignee
KAROLINE HELENE MATHILDE CAUER
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 KAROLINE HELENE MATHILDE CAUER filed Critical KAROLINE HELENE MATHILDE CAUER
Publication of GB755721A publication Critical patent/GB755721A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/17—Structural details of sub-circuits of frequency selective networks
    • H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
    • H03H7/1758—Series LC in shunt or branch path
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/06—Systems determining position data of a target
    • G01S13/08—Systems for measuring distance only
    • G01S13/10—Systems for measuring distance only using transmission of interrupted, pulse modulated waves
    • G01S13/26—Systems for measuring distance only using transmission of interrupted, pulse modulated waves wherein the transmitted pulses use a frequency- or phase-modulated carrier wave
    • G01S13/28—Systems for measuring distance only using transmission of interrupted, pulse modulated waves wherein the transmitted pulses use a frequency- or phase-modulated carrier wave with time compression of received pulses
    • G01S13/282—Systems for measuring distance only using transmission of interrupted, pulse modulated waves wherein the transmitted pulses use a frequency- or phase-modulated carrier wave with time compression of received pulses using a frequency modulated carrier wave
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/0115—Frequency selective two-port networks comprising only inductors and capacitors
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/17—Structural details of sub-circuits of frequency selective networks
    • H03H7/1708—Comprising bridging elements, i.e. elements in a series path without own reference to ground and spanning branching nodes of another series path
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/17—Structural details of sub-circuits of frequency selective networks
    • H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
    • H03H7/1766—Parallel LC in series path
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/17—Structural details of sub-circuits of frequency selective networks
    • H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
    • H03H7/1783—Combined LC in series path
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/18—Networks for phase shifting
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/78—Generating a single train of pulses having a predetermined pattern, e.g. a predetermined number
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/01—Shaping pulses
    • H03K5/04—Shaping pulses by increasing duration; by decreasing duration
    • H03K5/06—Shaping pulses by increasing duration; by decreasing duration by the use of delay lines or other analogue delay elements
    • H03K5/065—Shaping pulses by increasing duration; by decreasing duration by the use of delay lines or other analogue delay elements using dispersive delay lines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B14/00—Transmission systems not characterised by the medium used for transmission
    • H04B14/02—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/025—Filter arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

755,721. Pulse shaping networks. CAUER, K. H. M. Dec. 17, 1951 [Dec. 18, 1950], No. 29558/51. Drawings to Specification. Class 40 (8). [Also in Group XL (c)] In a pulse communication, remote control, radio navigation or other system a pulse of radio frequency energy is transmitted which is, during the pulse, also frequency or phase modulated and at a receiver an amplitude peaking network of reactances is employed to reduce the pulse width and increase the pulse amplitude relatively to any accompanying noise without altering the pulse general waveform, before the pulse is then detected. It may then be displayed on a cathode-ray tube. The pulse may -αt<SP>2</SP> be of the form u=e .cos(2#fo.t+#t<SP>2</SP>+#) produced by amplitude modulating, say, a reflex klystron with a Gaussian error function waveform and linearly frequency modulating it simultaneously by a sawtooth voltage applied to its reflector electrode. In that case the receiver network may be n series connected lattice networks with series arms of inductance L = R/2#3## o and diagonal arms of capacity C = 1/2#3## o .R where R is the terminating load resistance of the network and fo the initial frequency. More generally, the series and diagonal arms of a lattice network may have the values Z 1 = R j U m (#) / G m (#) Z 2 = R G m (#) / j U m (#) where G m and U m are the real and imaginary parts of the function (# o #3-j#)<SP>n</SP> / (# o #3+j#)<SP>n</SP> Alternatively the receiver lattice network may have resistances as the diagonal arms; or equivalent bridged-T networks may replace the lattice networks. Some of the impedance elements may be piezo-electric crystals, tuned circuits or cavity resonators, or short lengths of transmission line or waveguide. To avoid dielectric or other insulation breakdown, a relatively low amplitude pulse may be employed at the transmitter followed, after the aerial feeder line, by an amplitude peaking network as above. There may be employed also, in the feeder line, an inverse network for decreasing the pulse amplitude and increasing its width.
GB29558/51A 1950-12-18 1951-12-17 Radio wave pulse system and method Expired GB755721A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE755721X 1950-12-18

Publications (1)

Publication Number Publication Date
GB755721A true GB755721A (en) 1956-08-29

Family

ID=6659681

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29558/51A Expired GB755721A (en) 1950-12-18 1951-12-17 Radio wave pulse system and method

Country Status (2)

Country Link
FR (1) FR1054249A (en)
GB (1) GB755721A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6788169B1 (en) * 1999-12-29 2004-09-07 Broadband Royalty Corporation Amplifier composite triple beat (CTB) reduction by phase filtering

Also Published As

Publication number Publication date
FR1054249A (en) 1954-02-09

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