公开(公告)号：US20190013790A1

公开(公告)日：2019-01-10

申请号：US16029364

申请日：2018-07-06

Applicant: pSemi Corporation

Inventor： Emre Ayranci ,  Miles Sanner ,  Ke Li ,  James Francis McElwee ,  Tero Tapio Ranta ,  Kevin Roberts ,  Chih-Chieh Cheng

IPC: H03H7/01 ,  H04B1/00 ,  H04W72/04

CPC classification number: H03H7/0161 ,  H03H7/38 ,  H03H2210/033 ,  H03H2210/036 ,  H04B1/0053 ,  H04B1/006 ,  H04B1/0067 ,  H04L5/001 ,  H04W28/065 ,  H04W72/0453

Abstract: A flexible multi-path RF adaptive tuning network switch architecture that counteracts impedance mismatch conditions arising from various combinations of coupled RF band filters, particularly in a Carrier Aggregation-based (CA) radio system. In one version, a digitally-controlled tunable matching network is coupled to a multi-path RF switch in order to provide adaptive impedance matching for various combinations of RF band filters. Optionally, some or all RF band filters include an associated digitally-controlled filter pre-match network to further improve impedance matching. In a second version, some or all RF band filters coupled to a multi-path RF switch include a digitally-controlled phase matching network to provide necessary per-band impedance matching. Optionally, a digitally-controlled tunable matching network may be included on the common port of the multi-path RF switch to provide additional impedance matching capability. In a third version, CA direct mapped adaptive tuning networks include filter tuning blocks for selected lower frequency bands.

公开(公告)号：US20180159486A1

公开(公告)日：2018-06-07

申请号：US15372260

申请日：2016-12-07

Applicant: pSemi Corporation

Inventor： Tero Tapio Ranta ,  Chih-Chieh Cheng ,  Kevin Roberts

IPC: H03F1/56 ,  H03F3/19 ,  H03F3/21

CPC classification number: H03F1/56 ,  H03F3/19 ,  H03F3/21 ,  H03F2200/387 ,  H03F2200/451

Abstract: An improved architecture for a radio frequency (RF) power amplifier, impedance matching network, and selector switch. One aspect of embodiments of the invention is splitting the functionality of a final stage impedance matching network (IMN) into two parts, comprising a base set of off-chip IMN components and an on-chip IMN tuning component. The on-chip IMN tuning component may be a digitally tunable capacitor (DTC). In one embodiment, an integrated circuit having a power amplifier, an on-chip IMN tuner, and a selector switch is configured to be coupled to an off-chip set of IMN components. In another embodiment, an integrated circuit having an on-chip IMN tuner and a selector switch is configured to be coupled through an off-chip set of IMN components to a separate integrated circuit having an RF power amplifier.