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GB1499033A - Electromagnetic wave antenna - Google Patents

Electromagnetic wave antenna

Info

Publication number
GB1499033A
GB1499033A GB8977/75A GB897775A GB1499033A GB 1499033 A GB1499033 A GB 1499033A GB 8977/75 A GB8977/75 A GB 8977/75A GB 897775 A GB897775 A GB 897775A GB 1499033 A GB1499033 A GB 1499033A
Authority
GB
United Kingdom
Prior art keywords
section
elements
electrodes
sections
aerial
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
GB8977/75A
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.)
KIEV POLI I
Original Assignee
KIEV POLI I
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 KIEV POLI I filed Critical KIEV POLI I
Priority to GB8977/75A priority Critical patent/GB1499033A/en
Priority to DE19752510977 priority patent/DE2510977A1/en
Priority to FR7512644A priority patent/FR2309053A1/en
Publication of GB1499033A publication Critical patent/GB1499033A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/364—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith using a particular conducting material, e.g. superconductor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/20—Non-resonant leaky-waveguide or transmission-line antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/24—Non-resonant leaky-waveguide or transmission-line antennas; Equivalent structures causing radiation along the transmission path of a guided wave constituted by a dielectric or ferromagnetic rod or pipe
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/06—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using refracting or diffracting devices, e.g. lens
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/06—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using refracting or diffracting devices, e.g. lens
    • H01Q19/09—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using refracting or diffracting devices, e.g. lens wherein the primary active element is coated with or embedded in a dielectric or magnetic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements

Landscapes

  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Transducers For Ultrasonic Waves (AREA)

Abstract

1499033 Aerials KIEV POLITEKHNICHE INST IM 50-LETIA VELIKOI OKTYABR SOTSIALISTICHE REVOL JUT 4 March 1975 8977/75 Heading H4A An aerial comprises a piezoelectric element 1, the element having first 4 and second 5 sections acoustically coupled together the first section 4 being connected to a transmission line 8 and the second section 5 radiating or receiving e.m. waves into or from free space. Different elements can be constructed to cover the frequency range 10<SP>2</SP>-10<SP>7</SP> Hz. As shown in Fig. 1 the section 4 is connected to the transmission line 8 by leads from electrodes 6 and terminals 7 in the insulating housing 2. The second section 5 may also carry an electrode 9 which may be connected to a layer of foil 15 spread on the housing surface. As shown in Fig. 2, the element 1 may be composed of two acoustically coupled layers 10. The mode of vibration of the element is governed by the selection of polarization directions (indicated as arrows) relative to the electrodes 6. The aerial efficiency is increased by the introduction of a symmetrically disposed third section 5<SP>1</SP>, by using a ring form for electrodes 6 (not shown), by composing at least the sections 5, 5' from acoustically coupled half-wave units (Figs. 4, 6, not shown) and by using materials of differing electrical and acoustical impedances for sections 4 and 5. The operating frequency can be lowered by loading (12, Fig. 3, not shown) with a body of relative permitivity less than 100 and by attaching the element 1 to a support (11). In the last case, mechanically compensating elements (16, Fig. 8, not shown) may be disposed on the support. In another embodiment (Fig. 9, not shown) the selectivity and bandwidth are increased by using two piezoelements with different operating frequencies. The use of more than one element imparts directivity to the aerial. The elements 1 may be clamped at nodes (not shown) or held in place by rubber packing 3. The elements may be discs (Fig. 5, not shown) or cylinders (Fig. 4, not shown).
GB8977/75A 1975-03-04 1975-03-04 Electromagnetic wave antenna Expired GB1499033A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB8977/75A GB1499033A (en) 1975-03-04 1975-03-04 Electromagnetic wave antenna
DE19752510977 DE2510977A1 (en) 1975-03-04 1975-03-13 RECEPTION AND RADIATION DEVICE OF ELECTROMAGNETIC WAVES
FR7512644A FR2309053A1 (en) 1975-03-04 1975-04-23 DEVICE FOR CAPTURING AND RADIATION OF ELECTROMAGNETIC WAVES

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB8977/75A GB1499033A (en) 1975-03-04 1975-03-04 Electromagnetic wave antenna
DE19752510977 DE2510977A1 (en) 1975-03-04 1975-03-13 RECEPTION AND RADIATION DEVICE OF ELECTROMAGNETIC WAVES
FR7512644A FR2309053A1 (en) 1975-03-04 1975-04-23 DEVICE FOR CAPTURING AND RADIATION OF ELECTROMAGNETIC WAVES

Publications (1)

Publication Number Publication Date
GB1499033A true GB1499033A (en) 1978-01-25

Family

ID=27186305

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8977/75A Expired GB1499033A (en) 1975-03-04 1975-03-04 Electromagnetic wave antenna

Country Status (3)

Country Link
DE (1) DE2510977A1 (en)
FR (1) FR2309053A1 (en)
GB (1) GB1499033A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2455749A (en) * 2007-12-20 2009-06-24 Dhiraj Sinha Antenna using piezoelectric material
WO2009081089A1 (en) * 2007-12-20 2009-07-02 Dhiraj Sinha A micro antenna device
WO2011135356A1 (en) * 2010-04-30 2011-11-03 Kalyan Sarma Antenna device
GB2489524A (en) * 2011-04-01 2012-10-03 Camtech Invest Ltd Electro-magnetic or acoustic wave transmission methods or antennas
WO2013171376A1 (en) * 2012-05-16 2013-11-21 Teknologian Tutkimuskeskus Vtt Energy collector structure and method

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3453456A (en) * 1966-10-27 1969-07-01 Trw Inc Ultrasonic transducer
US3506858A (en) * 1968-04-17 1970-04-14 Us Air Force Piezoelectric shear wave transducer
US3836794A (en) * 1969-08-01 1974-09-17 Denki Onkyo Co Ltd Piezoelectric transformers
US3543058A (en) * 1969-11-10 1970-11-24 Westinghouse Electric Corp Piezoelectric transducer

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2455749A (en) * 2007-12-20 2009-06-24 Dhiraj Sinha Antenna using piezoelectric material
WO2009081089A1 (en) * 2007-12-20 2009-07-02 Dhiraj Sinha A micro antenna device
WO2011135356A1 (en) * 2010-04-30 2011-11-03 Kalyan Sarma Antenna device
GB2489524A (en) * 2011-04-01 2012-10-03 Camtech Invest Ltd Electro-magnetic or acoustic wave transmission methods or antennas
WO2012131376A1 (en) * 2011-04-01 2012-10-04 Camtech Investments Limited Apparatus and methods
WO2013171376A1 (en) * 2012-05-16 2013-11-21 Teknologian Tutkimuskeskus Vtt Energy collector structure and method

Also Published As

Publication number Publication date
FR2309053B1 (en) 1977-11-25
DE2510977A1 (en) 1976-09-23
FR2309053A1 (en) 1976-11-19

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Legal Events

Date Code Title Description
CSNS Application of which complete specification have been accepted and published, but patent is not sealed