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公开(公告)号：EP2086107A4
公开(公告)日：2009-10-28
申请号：EP07829825
申请日：2007-10-15
发明人： MIZUTANI HIROYUKI , NISHIDA KAZUHIRO , TSURU MASAOMI , KAWAKAMI KENJI , HIEDA MORISHIGE , MIYAZAKI MORIYASU
CPC分类号： H03B5/1847 , G01S7/35
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公开(公告)号：EP1363398A4
公开(公告)日：2008-03-12
申请号：EP03701021
申请日：2003-01-07
摘要： A small-sized, wideband phase shifting circuit and phase shifter comprising a capacitor; a switching element exhibiting a capacitance during OFF state; and a series circuit constituted by an inductor series connected to the switching element, the series circuit being connected in parallel with the capacitor; wherein an end of the capacitor and an end of the series circuit are connected to an input/output terminal of high frequency signals, while the other ends are connected to the ground.
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公开(公告)号：EP2383887A4
公开(公告)日：2016-12-14
申请号：EP09837530
申请日：2009-10-01
CPC分类号： H03F3/68 , H03F3/24 , H03F3/602 , H03F2200/204
摘要： A multiport amplifier and a wireless device using the same are obtained in which isolation among output terminals is improved, whereby the quality of communication is improved. The multiport amplifier according to this invention is provided with an input hybrid (3a), an output hybrid (3b), a plurality of amplifiers (7a through 7d) and a plurality of gain and phase control circuits (4a through 4d) that are inserted between the input hybrid (3a) and the output hybrid (3b), a plurality of output coupling circuits (8a through 8d) that are inserted between the output hybrid (3b) and a plurality of output terminals (9a through 9d) so that they receive output extraction signals (U1 through U4) corresponding to a plurality of output signals (O1 through O4), and a feedback circuit having a frequency selection circuit (13a) that is inserted between the plurality of output coupling circuits (8a through 8d) and the plurality of gain and phase control circuits (4a through 4d).
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公开(公告)号：EP3203260A4
公开(公告)日：2018-06-06
申请号：EP14903322
申请日：2014-10-03
CPC分类号： G01S7/35 , G01S7/40 , G01S7/4008 , G01S13/34 , G01S13/343 , G01S13/345 , H03B23/00 , H03L7/093 , H03L7/18 , H03L7/191 , H04B1/69
摘要： A conventional signal generating circuit has a problem of being unable to compensate for an error of a chirp signal when V-F characteristics of a VCO change suddenly owing to disturbance. A signal generating circuit of the invention includes a control voltage setting unit (CVSU) configured to set a control voltage for a chirp signal using voltage-frequency characteristics indicating characteristics of an output frequency versus voltage; a VCO configured to alter the frequency of its output signal by the control voltage; a quadrature demodulator configured to perform quadrature demodulation of the output signal of the VCO to generate an inphase signal and a quadrature signal orthogonal to each other; and a frequency detector configured to detect the frequency of the output signal of the VCO on the basis of the inphase signal and quadrature signal. The CVSU corrects the control voltage by using the voltage-frequency characteristics derived from relationships between the control voltage and the frequency of the output signal of the VCO. The VCO generates the chirp signal based on the control voltage corrected by the CVSU.
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公开(公告)号：EP1351388A4
公开(公告)日：2009-06-17
申请号：EP01900275
申请日：2001-01-09
发明人： HIEDA MORISHIGE , MIYAGUCHI KENICHI , MORI KAZUTOMI , KASAHARA MICHIAKI , TAKAGI TADASHI , IKEMATSU HIROSHI , TAKEUCHI NORIO , NAKAGURO HIROMASA , INAMI KAZUYOSHI
摘要： The invention provides a small phase shifter and a small multibit phase shifter, in which a filter including a capacitor formed during pinchoff of a FET is used to shift phases depending on the ON/OFF operation of the FET. The phase shifter comprises a first FET connected at its drain and source electrodes with an input terminal and an output terminal; a second FET connected at either one of its drain and source electrodes with the source of the first FET and grounded at the other through a first inductor; and a third FET connected at either one of its drain and source electrodes with the drain of the first FET and grounded at the other through a second inductor.
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公开(公告)号：EP2544301A4
公开(公告)日：2014-05-07
申请号：EP11750509
申请日：2011-02-22
发明人： HAYASHI RYOJI , HIRANO YOSHIHITO , SAKAI KIYOHIDE , SHIMOZAWA MITSUHIRO , INOUE AKIRA , HIEDA MORISHIGE , JOBA HIROYUKI , TAJIMA KENICHI , TAKAHASHI YOSHINORI , MORI KAZUTOMI , AKIYAMA TOMOHIRO
CPC分类号： H01Q3/42 , H01Q3/30 , H01Q21/0025 , H04B17/0085
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公开(公告)号：EP1739828A4
公开(公告)日：2010-01-27
申请号：EP04747979
申请日：2004-07-27
发明人： MIYAGUCHI KENICHI , HIEDA MORISHIGE , NISHINO TAMOTSU , HANGAI MASATAKE , MIYAZAKI MORIYASU , YOSHIDA YUKIHISA , TAKAGI TADASHI , HATAMOTO MIKIO
CPC分类号： H01P1/185 , H03H11/20 , H03H11/48 , H03H19/008
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