21.
    发明专利
    未知

    公开(公告)号:ITVA980013D0

    公开(公告)日:1998-06-23

    申请号:ITVA980013

    申请日:1998-06-23

    Abstract: By selecting a particular configuration of an input stage of a low noise RF amplifier, an optimal combination of linearity and input matching is achieved upon selecting a certain gain factor from a set of fixed step values. Each input stage configuration defines an input matching network specifically suitable to operate at a certain RF frequency. An RF signal input inductor is selectively associated to an input coupling capacitor, and a second degeneration inductor of a gain transistor of the input stage having a different gain value. The selection of a certain configuration is made through at least one switch through which a bias current generator is switched to the programmably selected input stage.

    28.
    发明专利
    未知

    公开(公告)号:ITVA980013A1

    公开(公告)日:1999-12-23

    申请号:ITVA980013

    申请日:1998-06-23

    Abstract: By selecting a particular configuration of an input stage of a low noise RF amplifier, an optimal combination of linearity and input matching is achieved upon selecting a certain gain factor from a set of fixed step values. Each input stage configuration defines an input matching network specifically suitable to operate at a certain RF frequency. An RF signal input inductor is selectively associated to an input coupling capacitor, and a second degeneration inductor of a gain transistor of the input stage having a different gain value. The selection of a certain configuration is made through at least one switch through which a bias current generator is switched to the programmably selected input stage.

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