发明名称 |
HIGH FREQUENCY CIRCUIT |
摘要 |
<P>PROBLEM TO BE SOLVED: To obtain a high frequency circuit including a wide-band and high-accuracy 90° phase distribution function wherein a phase error generated in a 90° phase distributor can be eliminated when distributing at 90° a phase of as local oscillation signal of a quadrature modulator or a quadrature demodulator. Ž<P>SOLUTION: The high frequency circuit includes: a 90° phase distributor 11 to which a sine wave signal is input and which generates a first output signal A having the same frequency as that of the sine wave signal and a second output signal B having a phase difference at 90° from the sine wave signal; an adder circuit 12 which performs addition processing on the first and second output signals A and B to output results thereof from an output terminal 15; and a subtractor circuit 13 which performs subtraction processing on the first and second output signals A and B to output the results thereof from an output terminal 16. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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申请公布号 |
JP2010016702(A) |
申请公布日期 |
2010.01.21 |
申请号 |
JP20080175919 |
申请日期 |
2008.07.04 |
申请人 |
MITSUBISHI ELECTRIC CORP;TOHOKU UNIV |
发明人 |
MIYAZAKI MORIYASU;KAMEDA TAKU;TAKAGI SUNAO;TSUBOUCHI KAZUO;OSHIMA SHOICHI |
分类号 |
H03H7/21;H03D7/14;H03H7/48 |
主分类号 |
H03H7/21 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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