I=VY V=IZ Circuit Element Admittance Y Impedance Z
... AC Circuits (quoting from E. M. Purcell, Electricity and Magnetism, 2nd. Ed, Sect. 8.3) 1. An alternating current or voltage can be represented by a complex number. 2. Any one branch or element of the circuit can be characterized, at a given frequency, by the relation between the voltage and the cur ...
... AC Circuits (quoting from E. M. Purcell, Electricity and Magnetism, 2nd. Ed, Sect. 8.3) 1. An alternating current or voltage can be represented by a complex number. 2. Any one branch or element of the circuit can be characterized, at a given frequency, by the relation between the voltage and the cur ...
PPT
... 9. If a transmission line has impedance of Z=R+jX=1+j5, compute the admittance Y=G-jB, i.e., find G and B. 10.If a transmission line has impedance of Z=R+jX=0+j5, compute the admittance Y=G-jB, i.e., find G and B. 11.Answer the following question using basic knowledge of power calculations in a circ ...
... 9. If a transmission line has impedance of Z=R+jX=1+j5, compute the admittance Y=G-jB, i.e., find G and B. 10.If a transmission line has impedance of Z=R+jX=0+j5, compute the admittance Y=G-jB, i.e., find G and B. 11.Answer the following question using basic knowledge of power calculations in a circ ...
Impedance
... Impedance is a complex quantity that can be made up of resistance (real part) and reactance (imaginary part). ...
... Impedance is a complex quantity that can be made up of resistance (real part) and reactance (imaginary part). ...
A SLOTTED LECHER LINE FOR lMPEDANCE - Research
... speaking such inserted devices are open to the following objections: either they have a very narrow frequency band and must accordingly be matched with the utmost accuracy to each test frequency (e.g. half-wave stubs), or they have a broad frequency band but at the same time such complex> four-pole ...
... speaking such inserted devices are open to the following objections: either they have a very narrow frequency band and must accordingly be matched with the utmost accuracy to each test frequency (e.g. half-wave stubs), or they have a broad frequency band but at the same time such complex> four-pole ...
BSNL JTO Model Test Paper – III
... 29. If for the network shown in the following fig. the value of Z(s) is value of C and R are respectively – ...
... 29. If for the network shown in the following fig. the value of Z(s) is value of C and R are respectively – ...
SWR meter for 144-1296 MHz bands - Ok1tic
... Graph of coupling coefficient (desired transfer between the main and coupling transmission line – s31 from fig. 1) and isolation (undesired transfer between the main and coupling transmission line – s41 from fig. 1) is captured at figures 6 and 7. It is desired that the difference between the isolat ...
... Graph of coupling coefficient (desired transfer between the main and coupling transmission line – s31 from fig. 1) and isolation (undesired transfer between the main and coupling transmission line – s41 from fig. 1) is captured at figures 6 and 7. It is desired that the difference between the isolat ...
Video Transcript - Rose
... The phasor transform for the source should be 4 at a phase angle of 0°. Let’s label the voltage across the resistor as VR, the voltage across the capacitor as VC, and VL for the inductor voltage. The current through the elements is I. For the series RLC circuit, the current should be the voltage div ...
... The phasor transform for the source should be 4 at a phase angle of 0°. Let’s label the voltage across the resistor as VR, the voltage across the capacitor as VC, and VL for the inductor voltage. The current through the elements is I. For the series RLC circuit, the current should be the voltage div ...
Standing wave ratio
In radio engineering and telecommunications, standing wave ratio (SWR) is a measure of impedance matching of loads to the characteristic impedance of a transmission line or waveguide. Impedance mismatches result in standing waves along the transmission line, and SWR is defined as the ratio of the partial standing wave's amplitude at an antinode (maximum) to the amplitude at a node (minimum) along the line.The SWR is usually thought of in terms of the maximum and minimum AC voltages along the transmission line, thus called the voltage standing wave ratio or VSWR (sometimes pronounced ""viswar""). For example, the VSWR value 1.2:1 denotes an AC voltage due to standing waves along the transmission line reaching a peak value 1.2 times that of the minimum AC voltage along that line. The SWR can as well be defined as the ratio of the maximum amplitude to minimum amplitude of the transmission line's currents, electric field strength, or the magnetic field strength. Neglecting transmission line loss, these ratios are identical.The power standing wave ratio (PSWR) is defined as the square of the VSWR, however this terminology has no physical relation to actual powers involved in transmission.The SWR can be measured with an instrument called an SWR meter. Since SWR is defined relative to the transmission line's characteristic impedance, the SWR meter must be constructed for that impedance; in practice most transmission lines used in these applications are coaxial cables with an impedance of either 50 or 75 ohms. Checking the SWR is a standard procedure in a radio station, for instance, to verify impedance matching of the antenna to the transmission line (and transmitter). Unlike connecting an impedance analyzer (or ""impedance bridge"") directly to the antenna (or other load), the SWR does not measure the actual impedance of the load, but quantifies the magnitude of the impedance mismatch just performing a measurement on the transmitter side of the transmission line.