公开(公告)号：US11297695B2

公开(公告)日：2022-04-05

申请号：US17038510

申请日：2020-09-30

Applicant: Mitsubishi Electric Corporation

Inventor： Akihito Hirai ,  Eigo Kuwata ,  Osamu Wada ,  Kazuhiro Iyomasa

IPC: H05B6/54 ,  H05B6/48

Abstract: A dielectric heating device is provided with two or more electrodes, a grounded surface connected to a first electrode, a signal source connected to a second electrode to output a high-frequency signal, a first element interposed serially between the signal source and second electrode, and a second element interposed serially between the grounded surface and first electrode. The first element includes two terminals that electrically connect the signal source and second electrode in a non-contact manner, to cause the high-frequency signal outputted from the signal source to pass through the first element, by using the electric coupling between the two terminals. The second element includes two terminals that electrically connect the grounded surface and first electrode in a non-contact manner, to output, by using the electric coupling between the two terminals, the high-frequency signal outputted from the signal source, to the grounded surface.

公开(公告)号：US11726118B2

公开(公告)日：2023-08-15

申请号：US17351597

申请日：2021-06-18

Applicant: Mitsubishi Electric Corporation

Inventor： Osamu Wada ,  Kenichi Tajima

IPC: G01R23/04 ,  G01R23/16

CPC classification number: G01R23/04 ,  G01R23/16

Abstract: A frequency detection circuit includes: a first signal source for outputting a first clock signal; a second signal source for outputting a second clock signal having the same frequency as but a different phase from those of the first clock signal; a first sample hold circuit for undersampling a reception signal using the first clock signal; a second sample hold circuit for undersampling the reception signal using the second clock signal; and a frequency calculating circuit for calculating the frequency of the reception signal using a phase difference between output signals of the first sample hold circuit and the second sample hold circuit.

公开(公告)号：US11683044B2

公开(公告)日：2023-06-20

申请号：US17849907

申请日：2022-06-27

Applicant: Mitsubishi Electric Corporation

Inventor： Osamu Wada ,  Hideyuki Nakamizo ,  Hiroshi Otsuka ,  Yukihiro Homma

IPC: H03L7/18 ,  H02J50/20 ,  H02J50/40 ,  H02J50/70 ,  H03L7/085 ,  H03L7/099

CPC classification number: H03L7/18 ,  H02J50/20 ,  H02J50/40 ,  H02J50/70 ,  H03L7/085 ,  H03L7/099

Abstract: In a wireless power transmitting device, a control circuit outputs a control signal for setting a frequency and a phase of an F-PLL signal generated by an F-PLL, the F-PLL generates the F-PLL signal having the frequency and the phase set by the control signal output from the control circuit, and a frequency conversion circuit generates a transmission signal by converting a frequency of the F-PLL signal generated by the F-PLL.

公开(公告)号：US20210141601A1

公开(公告)日：2021-05-13

申请号：US16476733

申请日：2017-02-22

Applicant: MITSUBISHI ELECTRIC CORPORATION

Inventor： Naohisa Takayama ,  Osamu Wada ,  Kenichi Tajima

IPC: G06F5/01 ,  G06F7/544 ,  G06F7/523 ,  G06F7/50

Abstract: A determination unit determines whether data to be inputted to each of first and second calculation units has a value greater than a specific positive value or a value less than a specific negative value. In such a case, the first calculation unit performs a calculation. The first calculation unit includes a data shifter bit-shifting input data by a set bit shift amount toward less significant bits, and reduces the bit width by the set bit shift amount, a multiplier multiplying together the data-shifted data, a cumulative addition unit cumulatively adding up results of the multiplication, and an inverse data shifter bit-shifting output data from the cumulative addition unit toward more significant bits by the set bit shift amount toward less significant bit positions, and increasing the bit width by the set bit shift amount.