Resistors in Microwave Applications
... there is an additional contribution to the impedance by an inductance L and a capacitance C to the actual resistance value R. The inductance results from the trim cutting, the capacitance is formed by the ceramic dielectric of the resistor body and the metallic contacts. The following substitution c ...
... there is an additional contribution to the impedance by an inductance L and a capacitance C to the actual resistance value R. The inductance results from the trim cutting, the capacitance is formed by the ceramic dielectric of the resistor body and the metallic contacts. The following substitution c ...
Measurement of beam current
... ¾ High resistivity of the core material to prevent for eddy current ⇒ thin, insulated strips of alloy. ¾ Barkhausen noise due to changes of Weiss domains ⇒ unavoidable limit for DCCT. ¾ Core material with low changes of µr due to temperature and stress ⇒ low micro-phonic pick-up. ¾ Thermal noise vol ...
... ¾ High resistivity of the core material to prevent for eddy current ⇒ thin, insulated strips of alloy. ¾ Barkhausen noise due to changes of Weiss domains ⇒ unavoidable limit for DCCT. ¾ Core material with low changes of µr due to temperature and stress ⇒ low micro-phonic pick-up. ¾ Thermal noise vol ...
a Low Distortion Mixer AD831
... (Figure 24). Note also that the Johnson noise of these gain-setting resistors, as well as that of the BPF terminating resistors, is ultimately reflected back to the mixer’s input; thus they should be as small as possible, consistent with the permissible loading on the amplifier’s output. ...
... (Figure 24). Note also that the Johnson noise of these gain-setting resistors, as well as that of the BPF terminating resistors, is ultimately reflected back to the mixer’s input; thus they should be as small as possible, consistent with the permissible loading on the amplifier’s output. ...
Frequency compensated LC networks for oscillators with the wide
... voltage input minimizes loading of the parallel LC network output, while the current output minimizes loading of the LC circuit input. A FET or a vacuum tube active device is a good example of such an amplifier, a FET cascode or a pentode tube gets even closer. In simulations I replaced the amplifie ...
... voltage input minimizes loading of the parallel LC network output, while the current output minimizes loading of the LC circuit input. A FET or a vacuum tube active device is a good example of such an amplifier, a FET cascode or a pentode tube gets even closer. In simulations I replaced the amplifie ...
Operational Amplifiers and Negative Feedback
... needed. This capacitor is normally in the range 1 µF – 10 µF. Compact capacitors in this range are usually electrolytic tantalum or aluminum and are polarized, meaning that one terminal (marked +) must always be positive relative to the other. If you put a polarized capacitor in backwards, it will b ...
... needed. This capacitor is normally in the range 1 µF – 10 µF. Compact capacitors in this range are usually electrolytic tantalum or aluminum and are polarized, meaning that one terminal (marked +) must always be positive relative to the other. If you put a polarized capacitor in backwards, it will b ...
ÿþM u l t i c h i p m o d u l e s o l u t i o n s M M I C P
... performed at room temperature (i.e. Ta=20 °C). The loss of the coaxial- to microstrip transition, and the feed lines, were corrected down to the package RF ports, so that the measured data reflect only the packaged HPA MMIC. Fig. 7 shows the S-parameters of the packaged HPA, measured with a scalar n ...
... performed at room temperature (i.e. Ta=20 °C). The loss of the coaxial- to microstrip transition, and the feed lines, were corrected down to the package RF ports, so that the measured data reflect only the packaged HPA MMIC. Fig. 7 shows the S-parameters of the packaged HPA, measured with a scalar n ...
500 MHz Four-Quadrant Multiplier AD834 Data Sheet FEATURES
... that drive the translinear core. The equivalent resistance of the voltage-to-current (V-I) converters is about 285 Ω, which results in low input related noise and drift. However, the low full-scale input voltage results in relatively high nonlinearity in the V-I converters. This is significantly red ...
... that drive the translinear core. The equivalent resistance of the voltage-to-current (V-I) converters is about 285 Ω, which results in low input related noise and drift. However, the low full-scale input voltage results in relatively high nonlinearity in the V-I converters. This is significantly red ...
Investigation of Hot Cathode and Hollow Anode of Argon Glow
... The detail of a gas discharge by a hot filament cathode has been studied by many researchers, Ehlers and Leung (1979) had investigated the electron emission from filament cathodes in gas discharge, and shown magnetic field produced by the filament heating current cause inhomogeneous emission of elec ...
... The detail of a gas discharge by a hot filament cathode has been studied by many researchers, Ehlers and Leung (1979) had investigated the electron emission from filament cathodes in gas discharge, and shown magnetic field produced by the filament heating current cause inhomogeneous emission of elec ...
ISO124
... non-destructive high-voltage reliability testing. It is based on the effects of non-uniform fields that exist in heterogeneous dielectric material during barrier degradation. In the case of void non-uniformities, electric field stress begins to ionize the void region before bridging the entire high- ...
... non-destructive high-voltage reliability testing. It is based on the effects of non-uniform fields that exist in heterogeneous dielectric material during barrier degradation. In the case of void non-uniformities, electric field stress begins to ionize the void region before bridging the entire high- ...
101 p2 _A1_ IC Characterization
... The oscillation circuit is made up of an inverter or amplifier (inside the microcontroller) and an external ceramic resonator with load capacitors, CL1 and CL2, (see Figure 1). The oscillation frequency is calculated using the resonant frequency (Fr), static capacitance (C0), and motional capacitanc ...
... The oscillation circuit is made up of an inverter or amplifier (inside the microcontroller) and an external ceramic resonator with load capacitors, CL1 and CL2, (see Figure 1). The oscillation frequency is calculated using the resonant frequency (Fr), static capacitance (C0), and motional capacitanc ...
llc resonant inverterfor solar pv applications
... converter switching frequency shifting with rise in input. DC characteristic of LCC resonant converter shown in Fig 2, it can be seen that there are two resonant frequencies. Low resonant frequency is determined by series resonant tank Lr and Csand high resonant frequency determined by Lr and equiva ...
... converter switching frequency shifting with rise in input. DC characteristic of LCC resonant converter shown in Fig 2, it can be seen that there are two resonant frequencies. Low resonant frequency is determined by series resonant tank Lr and Csand high resonant frequency determined by Lr and equiva ...
Klystron
A klystron is a specialized linear-beam vacuum tube, invented in 1937 by American electrical engineers Russell and Sigurd Varian, which is used as an amplifier for high radio frequencies, from UHF up into the microwave range. Low-power klystrons are used as oscillators in terrestrial microwave relay communications links, while high-power klystrons are used as output tubes in UHF television transmitters, satellite communication, and radar transmitters, and to generate the drive power for modern particle accelerators.In the klystron, an electron beam interacts with the radio waves as it passes through resonant cavities, metal boxes along the length of the tube. The electron beam first passes through a cavity to which the input signal is applied. The energy of the electron beam amplifies the signal, and the amplified signal is taken from a cavity at the other end of the tube. The output signal can be coupled back into the input cavity to make an electronic oscillator to generate radio waves. The gain of klystrons can be high, 60 dB (one million) or more, with output power up to tens of megawatts, but the bandwidth is narrow, usually a few percent although it can be up to 10% in some devices.A reflex klystron is an obsolete type in which the electron beam was reflected back along its path by a high potential electrode, used as an oscillator.The name klystron comes from the stem form κλυσ- (klys) of a Greek verb referring to the action of waves breaking against a shore, and the suffix -τρον (""tron"") meaning the place where the action happens. The name ""klystron"" was suggested by Hermann Fränkel, a professor in the classics department at Stanford University when the klystron was under development.