Inventor · disambiguated record
Dou Yuanzhu
Also filed as: YUANZHU DOU
39 granted patents·9 pending applications·738 citations·filing 1999–2010
98Inventor score
Top patents by PatentIndex Score
48 records- 0197US6952183B2Circularly-polarized-wave patch antenna which can be used in a wide frequency bandALPS ELECTRIC CO LTD·Filed 2003·Granted Oct 4, 2005·180 cites·10 claims
- 0288US7388553B2Antenna device for vehicleALPS ELECTRIC CO LTD·Filed 2005·Granted Jun 17, 2008·20 cites·1 claims
- 0388US7248224B2Antenna device having radiation characteristics suitable for ultrawideband communicationsALPS ELECTRIC CO LTD·Filed 2005·Granted Jul 24, 2007·20 cites·12 claims
- 0487US6809687B2Monopole antenna that can easily be reduced in height dimensionALPS ELECTRIC CO LTD·Filed 2002·Granted Oct 26, 2004·52 cites·25 claims
- 0586US7079078B2Patch antenna apparatus preferable for receiving ground wave and signal wave from low elevation angle satelliteALPS ELECTRIC CO LTD·Filed 2004·Granted Jul 18, 2006·20 cites·38 claims
- 0685US6879294B2Dual antenna capable of transmitting and receiving circularly polarized electromagnetic wave and linearly polarized electromagnetic waveALPS ELECTRIC CO LTD·Filed 2003·Granted Apr 12, 2005·44 cites·3 claims
- 0784US7271777B2Antenna device with improved isolation characteristicALPS ELECTRIC CO LTD·Filed 2005·Granted Sep 18, 2007·15 cites·7 claims
- 0884US7136024B2Slot antenna having high gain in zenith directionALPS ELECTRIC CO LTD·Filed 2005·Granted Nov 14, 2006·16 cites·6 claims
- 0983US7148847B2Small-size, low-height antenna device capable of easily ensuring predetermined bandwidthALPS ELECTRIC CO LTD·Filed 2004·Granted Dec 12, 2006·40 cites·4 claims
- 1076US6958732B2Small-sized and high-gained antenna-integrated moduleALPS ELECTRIC CO LTD·Filed 2004·Granted Oct 25, 2005·27 cites·5 claims
- 1175US6124830APlanar antennaALPS ELECTRIC CO LTD·Filed 1999·Granted Sep 26, 2000·48 cites·5 claims
- 1274US6452559B1Circular-Polarized-wave converterALPS ELECTRIC CO LTD·Filed 2001·Granted Sep 17, 2002·11 cites·7 claims
- 1372US6982673B2Inverted-F metal plate antenna having increased bandwidthALPS ELECTRIC CO LTD·Filed 2004·Granted Jan 3, 2006·22 cites·1 claims
- 1472US6946997B2Dual band antenna allowing easy reduction of size and heightALPS ELECTRIC CO LTD·Filed 2004·Granted Sep 20, 2005·22 cites·20 claims
- 1570US7304611B2Antenna system with high gain for radio waves polarized in particular directionALPS ELECTRIC CO LTD·Filed 2004·Granted Dec 4, 2007·20 cites·30 claims
- 1670US6977616B2Dual-band antenna having small size and low-heightALPS ELECTRIC CO LTD·Filed 2004·Granted Dec 20, 2005·20 cites·6 claims
- 1765US6975272B2Circularly polarized wave antenna device suitable for miniaturizationALPS ELECTRIC CO LTD·Filed 2004·Granted Dec 13, 2005·16 cites·6 claims
- 1865US6501432B2Primary radiator capable of achieving both low reflection and low lossALPS ELECTRIC CO LTD·Filed 2001·Granted Dec 31, 2002·16 cites·2 claims
- 1965US6353417B1Primary radiator in which the total length of dielectric feeder is reducedALPS ELECTRIC CO LTD·Filed 2000·Granted Mar 5, 2002·16 cites·24 claims
- 2062US7440739B2Smart antenna device with increased operation speed and complex smart antenna device using smart antenna deviceALPS ELECTRIC CO LTD·Filed 2005·Granted Oct 21, 2008·2 cites·7 claims
- 2162US6624715B2Ultrawide-band linear-circular polarization converterALPS ELECTRIC CO LTD·Filed 2000·Granted Sep 23, 2003·6 cites·9 claims
- 2261US7091920B2Circular polarization slot antenna apparatus capable of being easily miniaturizedALPS ELECTRIC CO LTD·Filed 2004·Granted Aug 15, 2006·13 cites·5 claims
- 2361US6552636B1Small-sized cylindrical waveguide bend having low reflection characteristicALPS ELECTRIC CO LTD·Filed 2000·Granted Apr 22, 2003·14 cites·5 claims
- 2460US6529089B2Circularly polarized wave generator using a dielectric plate as a 90° phase shifterALPS ELECTRIC CO LTD·Filed 2001·Granted Mar 4, 2003·5 cites·6 claims
- 2559US7106253B2Compact antenna deviceALPS ELECTRIC CO LTD·Filed 2004·Granted Sep 12, 2006·11 cites·43 claims
- 2656US8358235B2Wireless sensor deviceALPS ELECTRIC CO LTD·Filed 2010·Granted Jan 22, 2013·1 cites·10 claims
- 2756US7248226B2Compact antenna device radiating circularly polarized waveALPS ELECTRIC CO LTD·Filed 2006·Granted Jul 24, 2007·2 cites·6 claims
- 2854US6313808B1Freedhorn capable of receiving radio waves from plurality of neighboring satellitesALPS ELECTRIC CO LTD·Filed 2000·Granted Nov 6, 2001·9 cites·10 claims
- 2953US6320554B1Feed horn having elliptic open endALPS ELECTRIC CO LTD·Filed 1999·Granted Nov 20, 2001·20 cites·5 claims
- 3052US6437753B2Primary radiator suitable for size reduction and preventing deterioration of cross polarization characteristicALPS ELECTRIC CO LTD·Filed 2001·Granted Aug 20, 2002·8 cites·13 claims
- 3151US7046203B2Antenna device having miniaturized radiating conductor plateALPS ELECTRIC CO LTD·Filed 2004·Granted May 16, 2006·7 cites·2 claims
- 3250US6727779B2Converter for satellite communication reception having branching waveguide with L-shape probesALPS ELECTRIC CO LTD·Filed 2001·Granted Apr 27, 2004·2 cites·4 claims
- 3349US2009304118A1Diversity receiving deviceYUANZHU DOU·Filed 2009·Application pending·0 cites
- 3444US8358236B2Wireless sensor apparatusALPS ELECTRIC CO LTD·Filed 2010·Granted Jan 22, 2013·0 cites·6 claims
- 3544US6580400B2Primary radiator having improved receiving efficiency by reducing side lobesALPS ELECTRIC CO LTD·Filed 2001·Granted Jun 17, 2003·4 cites·12 claims
- 3642US6567054B2Primary radiator suitable for miniaturizationALPS ELECTRIC CO LTD·Filed 2002·Granted May 20, 2003·2 cites·26 claims
- 3742US6445356B1Primary radiator having reduced side lobeALPS ELECTRIC CO LTD·Filed 2000·Granted Sep 3, 2002·2 cites·20 claims
- 3842US6437754B2Primary radiator having a shorter dielectric plateALPS ELECTRIC CO LTD·Filed 2001·Granted Aug 20, 2002·2 cites·4 claims
- 3941US8358237B2Wireless sensor apparatusALPS ELECTRIC CO LTD·Filed 2010·Granted Jan 22, 2013·0 cites·5 claims
- 4038US2007293179A1Analog/digital broadcast signal receiverALPS ELECTRIC CO LTD·Filed 2007·Application pending·0 cites
- 4138US2005116875A1Antenna device suitable for miniaturizationALPS ELECTRIC CO LTD·Filed 2004·Application pending·0 cites
- 4238US2005090284A1Wireless network card having improved antenna sensitivityALPS ELECTRIC CO LTD·Filed 2004·Application pending·0 cites
- 4338US2005057401A1Small-size, low-height antenna device capable of easily ensuring predetermined bandwidthALPS ELECTRIC CO LTD·Filed 2004·Application pending·0 cites
- 4437US2004017320A1Wireless-LAN diversity antenna less susceptible to multipath influenceALPS ELECTRIC CO LTD·Filed 2003·Application pending·0 cites
- 4537US2004155832A1Compact and low-profile antenna device having wide range of resonance frequenciesALPS ELECTRIC CO LTD·Filed 2003·Application pending·0 cites
- 4637US2004125033A1Dual-band antenna having high horizontal sensitivityALPS ELECTRIC CO LTD·Filed 2003·Application pending·0 cites
- 4737US2004201523A1Patch antenna apparatus preferable for receiving ground wave and signal wave from low elevation angle satelliteALPS ELECTRIC CO LTD·Filed 2004·Application pending·0 cites
- 4836US6301464B1Satellite broadcasting converterALPS ELECTRIC CO LTD·Filed 1999·Granted Oct 9, 2001·3 cites·6 claims
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