Modal analysis

Patent metadata

Field	Value
Publication number	US-2016374158-A1
Application number	US-201615248442-A
Country	US
Kind code	A1
Filing date	Aug 26, 2016
Priority date	May 3, 2010
Publication date	Dec 22, 2016
Grant date	—

Abstract

An apparatus is provided for applying electromagnetic energy at a frequency or frequencies in a frequency range of 1 MHz to 100 GHz to an object in a cavity via at least one radiating element. At least one processor is configured to receive a target energy distribution, select, based on the target energy distribution, a plurality of sets of values of field-affecting parameters controllable by the apparatus, the parameters comprising at least one of frequency, phase, and amplitude, and control a source coupled to the at least one radiating element to excite a respective field pattern for each selected set of values.

First claim

What is claimed is:

1 . An apparatus for applying electromagnetic energy at a frequency or frequencies in a frequency range of 1 MHz to 100 GHz to an object in a cavity via at least one radiating element, the apparatus comprising:
at least one processor to:
receive a target energy distribution;
select, based on the target energy distribution, a plurality of sets of values of field-affecting parameters controllable by the apparatus, the parameters comprising at least one of frequency, phase, and amplitude; and
control a source coupled to the at least one radiating element to excite a respective field pattern for each selected set of values.

2 . An apparatus according to claim 1 , wherein the at least one processor is configured to control the source in order to selectively generate a plurality of differing electromagnetic field patterns in the cavity, and wherein the at least one processor is configured to select at least two electromagnetic field patterns from the plurality of differing electromagnetic field patterns, and regulate the source in order to apply the selected electromagnetic field patterns with different weights.

3 . An apparatus according to claim 2 , wherein the at least one processor is configured to sequentially select multiple differing electromagnetic field patterns.

4 . An apparatus according to claim 1 , wherein the source is configured to supply electromagnetic energy through a plurality of radiating elements, and wherein the at least one processor is configured to regulate the source to supply energy with differing amplitudes simultaneously to at least two radiating elements.

5 . An apparatus according to claim 1 , wherein the at least one processor is configured to:
determine information indicating a spatial location of the object in the cavity; identify a first field pattern having a first high-intensity region corresponding to a first area of the spatial location of the object; identify a second field pattern having a second high-intensity region corresponding to a second area of the spatial location of the object, wherein the first area is different from the second area; and control the source to apply the first field pattern and the second field pattern to the cavity.

6 . An apparatus according to claim 1 , wherein the radiating element is an antenna.

7 . A method for applying electromagnetic energy at a frequency or frequencies in a frequency range of 1 MHz to 100 GHz to an object in a cavity using a source of electromagnetic energy regulated by a processor, the method comprising:
receiving, with the processor, a target energy distribution; selecting, by the processor based on the target energy distribution, a plurality of sets of values of field-affecting parameters controllable by the processor, the parameters comprising at least one of frequency, phase and amplitude; controlling the source to excite a respective field pattern for each selected set of values.

8 . A method according to claim 7 , the method comprising:
determining information indicating a spatial location of the object in the cavity; identifying a first field pattern having a first high-intensity region corresponding to a first area of the spatial location of the object; identifying a second field pattern having a second high-intensity region corresponding to a second area of the spatial location of the object, wherein the first area is different from the second area; and controlling the source to apply the first field pattern and the second field pattern to the cavity.

9 . A method according to claim 8 , further comprising determining the locations of the first high-intensity region and the second high-intensity region in the energy application zone in accordance with the first area and the second area.

10 . A method according to claim 8 , further comprising controlling the source so that energy absorbed in the first area is substantially the same as the energy absorbed in the second area.

11 . A method according to 8 , further comprising controlling the source so that energy absorbed in the first high-intensity region is substantially the same as the energy absorbed in the second high-intensity region.

Assignees

• Goji Ltd

Inventors

• Einziger Pinchas
• Ben-Shmuel Eran
• Bilchinsky Alexander
• Rappel Amit
• Dikarov Denis
• Sigalov Michael
• Biberman Yoel

Classifications

• B01J19/129

  Radiofrequency · CPC title

• H05B6/705

  using microwave tuning · CPC title

• H05B6/70

  Feed lines · CPC title

• H05B6/6447

  Method of operation or details of the microwave heating apparatus related to the use of detectors or sensors · CPC title

• H05B6/68 Primary

  for monitoring or control · CPC title