2023年7月27日发(作者：)

专利内容由知识产权出版社提供专利名称：GPS low noise amplifier unit, duplex filterunit and GPS-cellular hand-set发明人：Spiegel, Solon,Kovacs, Imre申请号：EP01810860.5申请日：20010907公开号：EP1292024A1公开日：20030312专利附图：摘要：An active duplex filter unit (7) for a combined GPS-cellular hand-set comprises aGPS low noise amplifier unit (13) connecting a receive antenna to the input of a GPS unit. Itcomprises a capacitance (15) and an inductance (16) preceding, in parallel, an amplifier(14) whose output is connected to ground via, in series, an inductance (17) and acapacitance (18) with a tap (19) for the application of a bias voltage (+V) between them. Asimilar cellular low noise amplifier unit (12) connects the receive antenna with the reciveinput of a cellular unit a transmit output of which is connected to a transmit antenna via apower amplifier. The GPS low noise amplifier unit (13) provides high gain and low noisefigure at the GPS frequency and strong suppression in particular of frequencies used bycellular systems. The transmitter leakage signal in the GPS and cellular receivers isattenuated by the separation of the receive and transmit antennas. The GPS-cellularhand-set is compact and has low power consumption.申请人：u- blox-ag地址：Zürcherstrasse 68 8800 Thalwil CH国籍：CH代理机构：Wagner, Wolfgang, Dr. Phil., Dipl.-Phys.更多信息请下载全文后查看