公开(公告)号：US11881828B2

公开(公告)日：2024-01-23

申请号：US17671374

申请日：2022-02-14

Applicant: pSemi Corporation

Inventor： Jing Li ,  Emre Ayranci ,  Miles Sanner

IPC: H03F1/32 ,  H03F1/22 ,  H03F3/193 ,  H03F3/21 ,  H03G3/30 ,  H03F3/72 ,  H03G1/00 ,  H03G3/00

CPC classification number: H03G3/3036 ,  H03F1/223 ,  H03F1/3205 ,  H03F3/193 ,  H03F3/211 ,  H03F3/72 ,  H03G1/0023 ,  H03G1/0029 ,  H03G1/0088 ,  H03G3/001 ,  H03F2200/156 ,  H03F2200/159 ,  H03F2200/294 ,  H03F2200/451 ,  H03F2200/489 ,  H03F2200/492 ,  H03F2200/61 ,  H03F2203/7239 ,  H03G3/3052 ,  H03G2201/504

Abstract: A multi-gain LNA with inductive source degeneration is presented. The inductive source degeneration is provided via a tunable degeneration network that includes an inductor in parallel with one or more switchable shunting networks. Each shunting network includes a shunting capacitor that can selectively be coupled in parallel to the inductor. A capacitance of the shunting capacitor is calculated so that a combined impedance of the inductor and the shunting capacitor at a narrowband frequency of operation is effectively an inductance. The inductance is calculated according to a desired gain of the LNA. According to one aspect, the switchable shunting network includes a resistor in series connection with the shunting capacitor to provide broadband frequency response stability of the tunable degeneration network. According to another aspect, the LNA includes a plurality of selectable branches to further control gain of the LNA.

公开(公告)号：US20240171145A1

公开(公告)日：2024-05-23

申请号：US18418147

申请日：2024-01-19

Applicant: pSemi Corporation

Inventor： Jing Li ,  Emre Ayranci ,  Miles Sanner

IPC: H03G3/30 ,  H03F1/22 ,  H03F1/32 ,  H03F3/193 ,  H03F3/21 ,  H03F3/72 ,  H03G1/00 ,  H03G3/00

CPC classification number: H03G3/3036 ,  H03F1/223 ,  H03F1/3205 ,  H03F3/193 ,  H03F3/211 ,  H03F3/72 ,  H03G1/0023 ,  H03G1/0029 ,  H03G1/0088 ,  H03G3/001 ,  H03F2200/156 ,  H03F2200/159 ,  H03F2200/294 ,  H03F2200/451 ,  H03F2200/489 ,  H03F2200/492 ,  H03F2200/61 ,  H03F2203/7239 ,  H03G3/3052 ,  H03G2201/504

Abstract: A multi-gain LNA with inductive source degeneration is presented. The inductive source degeneration is provided via a tunable degeneration network that includes an inductor in parallel with one or more switchable shunting networks. Each shunting network includes a shunting capacitor that can selectively be coupled in parallel to the inductor. A capacitance of the shunting capacitor is calculated so that a combined impedance of the inductor and the shunting capacitor at a narrowband frequency of operation is effectively an inductance. The inductance is calculated according to a desired gain of the LNA. According to one aspect, the switchable shunting network includes a resistor in series connection with the shunting capacitor to provide broadband frequency response stability of the tunable degeneration network. According to another aspect, the LNA includes a plurality of selectable branches to further control gain of the LNA.