Stage of a power generator of high frequency current
First Claim
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1. Output amplifier stage (1) of a generator generating a high frequency current with wave length λ
- , designed to power a load impedance (12), comprising a triode or a tetrode (2) polarized to operate in class B or C, the triode or the tetrode (2) being provided with a cathode (4), and an anode (5), characterized in that the anode (5) of the triode or the tetrode (2) is coupled back to the cathode (4) so as to cause a positive reaction through a wide band line (31), with distributed constants or distributed local impedances with an input (33) coupled to the anode (5) and an output coupled to the cathode (4).
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Abstract
Output amplifier stage (1) of a high frequency generator (1) with tube (2) operating in class B or C has its output (5) looped back on the input (4) by means of a coaxial line (31) with a length equal to approximately the wave length corresponding to the operating frequency.
The apparent gain of the amplifier stage (1) is thus increased and the output power from an intermediate amplifier (24) can be correspondingly reduced, amplifying a stable signal at the operating frequency.
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Citations
12 Claims
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1. Output amplifier stage (1) of a generator generating a high frequency current with wave length λ
- , designed to power a load impedance (12), comprising a triode or a tetrode (2) polarized to operate in class B or C, the triode or the tetrode (2) being provided with a cathode (4), and an anode (5), characterized in that the anode (5) of the triode or the tetrode (2) is coupled back to the cathode (4) so as to cause a positive reaction through a wide band line (31), with distributed constants or distributed local impedances with an input (33) coupled to the anode (5) and an output coupled to the cathode (4).
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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