POLYPHASE FILTER

WIPO Patent Application WO/2019/082253

A1

The present invention provides a polyphase filter 1, comprising: an RC (resistor-capacitor) circuit 20 that has first to fourth input terminals to which four-phase signals are input and first to fourth output terminals from which four-phase signals are output, and that outputs signals having phases which each differ 90° from one another to the four output terminals in a case where a positive phase signal is input to a first input terminal 200a and a second input terminal 200b and a reverse phase signal is input to a third input terminal 200c and a fourth input terminal 200d; and a reactance circuit network 10 that divides an input differential signal into a first differential signal 110 and a second differential signal 111 which is given a 90° phase relative to the first differential signal 110, and that outputs the positive phase signal of the first differential signal 110 to the first input terminal 200a, outputs the reverse phase signal of the first differential signal 110 to the third input terminal 200c, outputs the positive phase signal of the second differential signal 111 to the second input terminal 200b, and outputs the reverse phase signal of the second differential signal 111 to the fourth input terminal 200d.

FUJIWARA TAKANOBU (JP)
SHIMOZAWA MITSUHIRO (JP)

PCT/JP2017/038238

May 02, 2019

October 24, 2017

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MITSUBISHI ELECTRIC CORP (JP)

H03H7/21

WO2017149698A1

2017-09-08

US8552782B1	2013-10-08
JPH11127004A	1999-05-11
JP2001045080A	2001-02-16

MURAKAMI, Kanako et al. (JP)

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