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公开(公告)号：US20170279479A1
公开(公告)日：2017-09-28
申请号：US15464270
申请日：2017-03-20
发明人： Andrew Robert ADAMS , Ali AFSAHI , Arya Reza BEHZAD , Keith Andrews CARTER , Hooman DARABI , Rohit V. GAIKWAD , Dandan LI , Jianping PENG , Jacob Jude RAEL , Tirdad SOWLATI
CPC分类号： H04B1/40 , H04B1/0057 , H04B1/0483 , H04W4/80
摘要： A wireless communication device includes a first circuit including a baseband circuit and a radio circuit, and at least one frontend module (FEM) remote from the first circuit and placed in close proximity to and coupled to at least one radio-frequency (RF) antenna. The FEM is coupled to the first circuit via interface circuitry. An FEM comprises a frontend (FE) circuit including one or more low-noise amplifiers (LNAs), one or more power amplifiers (PAs), and at least one of a multi-pole switch and a multiplexer. The multi-pole switch and the multiplexer being implemented on a first side of the FEM coupled to the interface circuitry. The interface circuitry includes at least some of filters, splitters, multi-pole switches, and multiplexers to reduce a count of interconnect routes to the at least one FEM.
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公开(公告)号：US20190109575A1
公开(公告)日：2019-04-11
申请号：US15730643
申请日：2017-10-11
发明人： Milad DARVISHI , Hooman DARABI , Arya Reza BEHZAD
CPC分类号： H03H7/01 , H03H2/008 , H03H7/12 , H03H19/002 , H03H2001/0014 , H03H2007/013 , H03H2210/025 , H04J1/045
摘要： A linear, low noise, high quality factor (Q) and widely tunable notch filter circuit includes one or more first reactive elements coupled between a first filter node and a first node. The notch filter circuit further includes a multi-branch circuit having multiple parallel branches and coupled between the first node and a second node. Each branch of the multi-branch circuit includes at least a switch coupled to a variable capacitor. A notch frequency of the notch filter circuit is tunable by adjusting a capacitance of the variable capacitor.
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