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公开(公告)号：US20180241312A1
公开(公告)日：2018-08-23
申请号：US15782753
申请日：2017-10-12
发明人： Choong Yul CHA , Dandan LI , Hung-Ming CHIEN , Long BU , Stephen C. AU
CPC分类号： H02M3/1588 , H02M3/137 , H02M3/158 , H02M3/28 , H02M2001/0045 , H03L7/06 , H03L7/08 , H03L7/18
摘要： A synchronous switching regulator circuit for supply regulation of a switching circuit includes a pass transistor to couple the switching circuit to a supply voltage. The synchronous switching regulator circuit further includes a switch that is operable to synchronously turn off a flow of a supply current through the pass transistor. The switching circuit can be controlled by a switching signal, and the switch can operate in synchronization with the switching circuit.
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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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