The first requirement is typically solved with a long-tailed cascode stage ( 2 or 3 double triodes ), the second-with two cathode followers inserted between the driver stage and the power stage.
12.
The cascode places a common-source amplifier between the voltage driver and the common-gate circuit to permit voltage amplification using a driver with " R S > > 1 / g m ".
13.
It is commonly used for small-signal devices in radio frequency applications where biasing the drain-side gate at constant potential reduces the gain loss caused by Miller effect, replacing two separate transistors in cascode configuration.
14.
This topology is rarely used in RF mixer / modulator applications, for a variety of reasons . one being that the linearity advantage of the top linearized cascode is minimal due to the near-square wave drive signals to these bases.
15.
A new class of microwave pulse generation architecture, the RACE ( Rapid Automatic Cascode Exchange ) pulse generation circuit is implemented using low-cost monolithic IC technology and can produce pulses as short as 1 picosecond, and with repetition rates exceeding 30 billion pulses per second.
16.
A new class of pulse generator microwave pulse generation microwave pulse generation architecture, the RACE ( Rapid Automatic Cascode Exchange ) pulse generation circuit, is implemented using low-cost monolithic IC technology and can produce pulses as short as 1 picosecond, and with repetition rates exceeding 30 billion pulses per second.
17.
The cascode circuit can also be built using bipolar transistors, or MOSFETs, or even one FET ( or MOSFET ) and one BJT . In the latter case, the BJT must be the upper transistor; otherwise, the ( lower ) BJT will always saturate unless extraordinary steps are taken to bias it.
18.
If one were to replace the upper FET with a typical inductive / resistive load and take the output from the input transistor's drain ( that is, a common source ( CS ) configuration ), the CS configuration would offer the same input impedance as the cascode, but the cascode configuration would offer a potentially greater gain and much greater bandwidth.
19.
If one were to replace the upper FET with a typical inductive / resistive load and take the output from the input transistor's drain ( that is, a common source ( CS ) configuration ), the CS configuration would offer the same input impedance as the cascode, but the cascode configuration would offer a potentially greater gain and much greater bandwidth.
20.
Ronja however uses a feedbackless design where the PIN has a high working electrical resistance ( 100 kilohms ) which together with the total input capacitance ( roughly 7 pF, 5 pF PIN and 2 pF input MOSFET cascode ) makes the device operate with a passband on a 6 dB / oct slope of low pass formed by PIN working resistance and total input capacitance.
