发明名称 |
High-frequency detection method and high-frequency detection circuit |
摘要 |
A high frequency detection circuit detects information about a first high frequency power in a high frequency power source device supplying the first high frequency power having a first frequency and a second high frequency power having a second frequency lower than the first frequency to a load. A third high frequency signal that is a mixed signal of a first high frequency signal having the first frequency and a second high frequency signal having the second frequency is detected by a directional coupler. The third high frequency signal is converted to a fourth high frequency signal having a third frequency between the first and second frequencies using a heterodyne system. A progressive wave power of the first frequency is detected based on the fourth high frequency signal.
|
申请公布号 |
US6958630(B2) |
申请公布日期 |
2005.10.25 |
申请号 |
US20040487431 |
申请日期 |
2004.02.23 |
申请人 |
PEARL KOGYO CO., LTD. |
发明人 |
WATANABE SHINICHI;SAEKI NOBORU |
分类号 |
G01R21/01;G01R21/00;G01R23/14;H05H1/46;(IPC1-7):H03D3/00;G06F19/00 |
主分类号 |
G01R21/01 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|