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公开(公告)号：US20220231648A1
公开(公告)日：2022-07-21
申请号：US17671374
申请日：2022-02-14
Applicant: pSemi Corporation
Inventor： Jing LI , Emre AYRANCI , Miles SANNER
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.
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公开(公告)号：US20240113665A1
公开(公告)日：2024-04-04
申请号：US18492544
申请日：2023-10-23
Applicant: pSemi Corporation
Inventor： Miles SANNER , Emre AYRANCI , Parvez DARUWALLA
CPC classification number: H03F1/223 , H03F3/193 , H03F3/21 , H03F2200/294 , H03F2203/7236
Abstract: Methods and circuital arrangements for turning OFF branches of a multi-branch cascode amplifier are presented. First and second switching arrangements coupled to a branch allow turning OFF the branch while protecting transistors of the branch from a supply voltage that may be greater than a tolerable voltage of the transistors. The first switching arrangement includes a transistor-based switch that is in series connection with the transistors of the branch. The first switching arrangement drops the supply voltage during the OFF state of the branch and provides a conduction path for a current through the branch during the ON state of the branch. A resistor and a shunting switch are coupled to a gate of the transistor-based switch to reduce parasitic coupling effects of the transistor-based switch upon an RF signal coupled to the branch during the ON state and OFF state of the branch.
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公开(公告)号：US20230253926A1
公开(公告)日：2023-08-10
申请号：US18168346
申请日：2023-02-13
Applicant: pSemi Corporation
Inventor： Miles SANNER , Emre AYRANCI , Parvez DARUWALLA
CPC classification number: H03F1/223 , H03F3/193 , H03F3/21 , H03F2203/7236 , H03F2200/294
Abstract: Methods and circuital arrangements for turning OFF branches of a multi-branch cascode amplifier are presented. First and second switching arrangements coupled to a branch allow turning OFF the branch while protecting transistors of the branch from a supply voltage that may be greater than a tolerable voltage of the transistors. The first switching arrangement includes a transistor-based switch that is in series connection with the transistors of the branch. The first switching arrangement drops the supply voltage during the OFF state of the branch and provides a conduction path for a current through the branch during the ON state of the branch. A resistor and a shunting switch are coupled to a gate of the transistor-based switch to reduce parasitic coupling effects of the transistor-based switch upon an RF signal coupled to the branch during the ON state and OFF state of the branch.
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公开(公告)号：US20230147703A1
公开(公告)日：2023-05-11
申请号：US17523584
申请日：2021-11-10
Applicant: pSemi Corporation
Inventor： Emre AYRANCI , Miles SANNER
CPC classification number: H03F3/19 , H03F1/565 , H03F2200/451 , H03F2200/294 , H03F2200/165 , H03F2200/222
Abstract: Methods and devices for realizing RF processing paths associated to different frequency bands are presented. According to one aspect, the RF processing paths are provided by a hybrid input LNA RF frontend that includes RF processing paths that are dedicated to specific frequency bands and RF processing paths that are shared between several frequency bands. Sharing of the RF processing paths is provided by an input combiner network and/or a multi-input cascode amplifier that includes a cascode transistor that is coupled to at least two input transistors. Further presented in a toolkit that includes circuit blocks that can be used in specific combinations to customize the RF processing paths to achieve specific performance or cost optimization. A decision tree based on performance and cost priorities assigned to each of the frequency bands is used to provide the specific combinations.
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Patent Agency Ranking
公开(公告)号：US20220278653A1
公开(公告)日：2022-09-01
申请号：US17189141
申请日：2021-03-01
Applicant: pSemi Corporation
Inventor： Miles SANNER , Emre AYRANCI , Parvez DARUWALLA
Abstract: Methods and circuital arrangements for turning OFF branches of a multi-branch cascode amplifier are presented. First and second switching arrangements coupled to a branch allow turning OFF the branch while protecting transistors of the branch from a supply voltage that may be greater than a tolerable voltage of the transistors. The first switching arrangement includes a transistor-based switch that is in series connection with the transistors of the branch. The first switching arrangement drops the supply voltage during the OFF state of the branch and provides a conduction path for a current through the branch during the ON state of the branch. A resistor and a shunting switch are coupled to a gate of the transistor-based switch to reduce parasitic coupling effects of the transistor-based switch upon an RF signal coupled to the branch during the ON state and OFF state of the branch.
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公开(公告)号：US20210135636A1
公开(公告)日：2021-05-06
申请号：US16968024
申请日：2019-01-28
Applicant: pSemi Corporation
Inventor： Miles SANNER , Emre AYRANCI
IPC: H03F3/16
Abstract: A receiver front end (300) having low noise amplifiers (LNAs) is disclosed herein. A cascode having a “common source” configured input FET and a “common gate” configured output FET can be turned on or off using the gate of the output FET. A first switch (235) is provided that allows a connection to be either established or broken between the source terminal of the input FET of each LNA. A drain switch (260) is provided between the drain terminals of input FETs to place the input FETs in parallel. This increases the gm of the input stage of the amplifier, thus improving the noise figure of the amplifier.
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公开(公告)号：US20250070810A1
公开(公告)日：2025-02-27
申请号：US18941923
申请日：2024-11-08
Applicant: pSemi Corporation
Inventor： Emre AYRANCI , Miles SANNER , Phanindra YERRAMILLI
Abstract: Methods and devices addressing design of wideband LNAs with gain modes are disclosed. The disclosed teachings can be used to reconfigure RF receiver front-end to operate in various applications imposing stringent and conflicting requirements. Wideband and narrowband input and output matching with gain modes using a combination of the same hardware and a switching network are also disclosed. The described methods and devices also address carrier aggregation requirements and provide solutions that can be used both in single-mode and split-mode operations.
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公开(公告)号：US20240396503A1
公开(公告)日：2024-11-28
申请号：US18790254
申请日：2024-07-31
Applicant: pSemi Corporation
Inventor： Miles SANNER , Emre AYRANCI , Parvez DARUWALLA
Abstract: Methods and circuital arrangements for turning OFF branches of a multi-branch cascode amplifier are presented. First and second switching arrangements coupled to a branch allow turning OFF the branch while protecting transistors of the branch from a supply voltage that may be greater than a tolerable voltage of the transistors. The first switching arrangement includes a transistor-based switch that is in series connection with the transistors of the branch. The first switching arrangement drops the supply voltage during the OFF state of the branch and provides a conduction path for a current through the branch during the ON state of the branch. A resistor and a shunting switch are coupled to a gate of the transistor-based switch to reduce parasitic coupling effects of the transistor-based switch upon an RF signal coupled to the branch during the ON state and OFF state of the branch.
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公开(公告)号：US20220407469A1
公开(公告)日：2022-12-22
申请号：US17351131
申请日：2021-06-17
Applicant: pSemi Corporation
Inventor： Emre AYRANCI , Miles SANNER , Mengsheng RUI , Jubaid QAYYUM
Abstract: Methods and devices for reducing DC current consumption of a multi-stage LNA amplifier. According to one aspect, first and second amplification stages are stacked to provide a common conduction path of a DC current. The first stage includes a common-source amplifier, the second stage includes a common-drain amplifier. Coupling between the two stages is provided by series connection of load inductors of the respective stages and a capacitor coupled at a common node between the inductors. According to another aspect, a current splitter circuit is used to split a current to the first stage according to two separate conduction paths, one common path to the two stages, and another separate from the second stage. According to yet another aspect, the current splitter circuit includes a feedback loop that controls the splitting of the current so to maintain a constant current through the common path.
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