What is probably the primary advantage of the reflex klystron over the two-cavity klystron is the mechanism used to tune the device. The two-cavity klystron has mechanical tuning, but the reflex klystron is tuned electrically. And it doesn't take an electrical engineering degree for an investigator to figure out that electrical controls can be manipulated a whole bunch faster than a mechanical device.
The Reflex Klystron:Another tube based on velocity modulation, and used to generate microwave energy, is the REFLEX KLYSTRON. The reflex klystron contains a REFLECTOR PLATE, referred to as the REPELLER, instead of the output cavity used in other types of klystrons. The electron beam is modulated as it was in the other types of klystrons by passing it through an oscillating resonant cavity, but here the similarity ends. The feedback required to maintain oscillations within the cavity is obtained by reversing the beam and sending it back through the cavity. The electrons in the beam are velocity-modulated before the beam passes through the cavity the second time and will give up the energy required to maintain oscillations. The electron beam is turned around by a negatively charged electrode that repels the beam. This negative element is the repeller mentioned earlier. This type of klystron oscillator is called a reflex klystron because of the reflex action of the electron beam. Check out the link below for more information.
The X-band microwave bench is a system which provides standard type rectangular wave-guide components. It includes the study of reflex Klystron and impedance measurement.
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Frequency does not change when you use a step-up or step-down transformer. Only current and voltage is changed.
A: It is a microwave oscillator device.
What is probably the primary advantage of the reflex klystron over the two-cavity klystron is the mechanism used to tune the device. The two-cavity klystron has mechanical tuning, but the reflex klystron is tuned electrically. And it doesn't take an electrical engineering degree for an investigator to figure out that electrical controls can be manipulated a whole bunch faster than a mechanical device.
klystron can act as both an amplifier and oscillator whereas a reflex klystron can act as only an oscillator. klystron needs a buncher cavity(sometimes multiple bunchers) and a catcher cavity whereas a reflex klystron needs only one cavity. klystron bunches electrons in forward direction, whereas the other bunches in the reverse direction using a reflector plate. klystron needs i/p signal (accelerating or deccelerating potential) whereas the other dont.
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The Reflex Klystron:Another tube based on velocity modulation, and used to generate microwave energy, is the REFLEX KLYSTRON. The reflex klystron contains a REFLECTOR PLATE, referred to as the REPELLER, instead of the output cavity used in other types of klystrons. The electron beam is modulated as it was in the other types of klystrons by passing it through an oscillating resonant cavity, but here the similarity ends. The feedback required to maintain oscillations within the cavity is obtained by reversing the beam and sending it back through the cavity. The electrons in the beam are velocity-modulated before the beam passes through the cavity the second time and will give up the energy required to maintain oscillations. The electron beam is turned around by a negatively charged electrode that repels the beam. This negative element is the repeller mentioned earlier. This type of klystron oscillator is called a reflex klystron because of the reflex action of the electron beam. Check out the link below for more information.
a. velocity modulated tube b. frequency modulated tube c. Amplitude modulated tube d. simple triode
Reflected power in a klystron refers to the power that is sent back towards the input of the klystron due to impedance mismatches or other factors. This can cause inefficiencies in the klystron operation as the reflected power is not contributing to the desired output. Proper tuning and matching of the klystron components can help minimize reflected power.
The frequency is changed by varying its speed, and the the voltage is changed by varying its field current.
The X-band microwave bench is a system which provides standard type rectangular wave-guide components. It includes the study of reflex Klystron and impedance measurement.
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A klystron mount is a mechanical structure or device used to secure and support a klystron tube in its operating position within a microwave system. It provides stability and precise alignment for the klystron to ensure efficient performance and reliable operation. The mount may also include cooling mechanisms to dissipate heat generated during operation.
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