GB1151289A - Radio Frequency Heating Apparatus - Google Patents

Radio Frequency Heating Apparatus

Info

Publication number
GB1151289A
GB1151289A GB1635267A GB1635267A GB1151289A GB 1151289 A GB1151289 A GB 1151289A GB 1635267 A GB1635267 A GB 1635267A GB 1635267 A GB1635267 A GB 1635267A GB 1151289 A GB1151289 A GB 1151289A
Authority
GB
United Kingdom
Prior art keywords
applicator
port
ports
input
heating apparatus
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
GB1635267A
Inventor
Roger John Meredith
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.)
Associated Electrical Industries Ltd
Original Assignee
Associated Electrical Industries 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 Associated Electrical Industries Ltd filed Critical Associated Electrical Industries Ltd
Priority to GB1635267A priority Critical patent/GB1151289A/en
Publication of GB1151289A publication Critical patent/GB1151289A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/70—Feed lines
    • H05B6/705—Feed lines using microwave tuning
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/66—Circuits
    • H05B6/68—Circuits for monitoring or control
    • H05B6/686—Circuits comprising a signal generator and power amplifier, e.g. using solid state oscillators
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/70—Feed lines
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/72—Radiators or antennas
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/76—Prevention of microwave leakage, e.g. door sealings

Abstract

1,151,289. R.F. couplings. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. 7 March, 1968 [10 April, 1967], No. 16352/67. Heading H4A. An R.F. heating apparatus for heating dielectric material comprises a non-resonant applicator A, Fig. 2, having input and output ends, in combination with circuit means for directing back at least part of the energy not absorbed by the dielectric material to the applicator input in phase. As described, an R.F. source M, Fig. 2, is connected to port 1 of a hybrid coupler HC and the input end of the applicator A is connected to port 2. Ports 3 and 4 are connected respectively to a terminating load L and, via a phase shifter P, to the output end of the applicator A. By suitably choosing the coupling factor of the hybrid HC, i.e., as substantially equal to the single pass loss of the applicator, and adjusting the phase shifter P, the signals from ports 1 and 4, respectively, outgoing at port 3 are made subtractive, and outgoing at port 2 are made additive. In another embodiment (Fig. 1, not shown), connections to the ports of the hybrid coupler differ from Fig. 2 in that those to the input end of the applicator and to the terminating load are interchanged.
GB1635267A 1967-04-10 1967-04-10 Radio Frequency Heating Apparatus Expired GB1151289A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1635267A GB1151289A (en) 1967-04-10 1967-04-10 Radio Frequency Heating Apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1635267A GB1151289A (en) 1967-04-10 1967-04-10 Radio Frequency Heating Apparatus

Publications (1)

Publication Number Publication Date
GB1151289A true GB1151289A (en) 1969-05-07

Family

ID=10075745

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1635267A Expired GB1151289A (en) 1967-04-10 1967-04-10 Radio Frequency Heating Apparatus

Country Status (1)

Country Link
GB (1) GB1151289A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2552613A1 (en) * 1983-09-28 1985-03-29 Thourel Leo Microwave heating device
FR2592992A1 (en) * 1986-01-10 1987-07-17 Cgr Mev DEVICE FOR COMBINING TWO ALTERNATIVE SIGNALS OF THE SAME FREQUENCY.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2552613A1 (en) * 1983-09-28 1985-03-29 Thourel Leo Microwave heating device
FR2592992A1 (en) * 1986-01-10 1987-07-17 Cgr Mev DEVICE FOR COMBINING TWO ALTERNATIVE SIGNALS OF THE SAME FREQUENCY.
EP0232190A1 (en) * 1986-01-10 1987-08-12 C.G.R. MeV Linear accelerator
US4755760A (en) * 1986-01-10 1988-07-05 C.G.R. Mev Device for combining two alternating signals of the same frequency

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees