Category Archives: Transmission Lines

RADIO FREQUENCY LINES OR LOW LOSS LINES

RADIO FREQUENCY LINES OR LOW LOSS LINES A LOW LOSS TRANSMISSION LINE IS ONE FOR WHICH R<<шl AND                      G<<шC Thus                     Z=R+jшL- jшL And                     Y=G+jшC – jшC

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USE OF “WAVELENGTHS TOWARDS GENERATOR”(WTG) SCALE AND “WAVELENGTHS TOWARDS LOAD”(WTL) SCALE ON SMITH CHART

Let us first discuss USE OF “WAVELENGTHS TOWARDS GENERATOR”(WTG) SCALE AND “WAVELENGTHS TOWARDS LOAD”(WTL) SCALE ON SMITH CHART The outermost scale around the perimeter of Smith chart is called the Wavelengths towards generator(WTG) scale.It has been constructed to denote movement … Continue reading

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Relation Voltage Standing Wave Ratio and Reflection Coefficient

Last time I have discussed the standing wave ratio and voltage standing wave ratio. Today we will discuss the reflection coefficient and relation of voltage standing wave ratio with the reflection coefficient. REFLECTION COEFFICIENT Definition:- Reflection co-efficient is defined as … Continue reading

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Standing wave and standing wave ratio

In this article, we will understand; what is standing wave, standing wave ratio (SWR), voltage standing wave ratio (VSWR) and current standing wave ratio (CSWR) in context of transmission line. STANDING WAVES When a transmission line is not correctly terminated … Continue reading

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IMPEDANCE MATCHING USING STUB

Let us discuss today discuss what is impedance matching and what is stub: IMPEDANCE MATCHING A transmission line is matched when the load impedance ,Zris equal to the characteristic impedance ,Z0 of the line that is

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Input impedance for quarter wave and half wave transmission line

Input impedance Zi for quarter wave transmission line A transmission line is said to be quarter wave transmission line when its length equals quarter wavelength. That is                                             l=λ/4 Or                                                   l=(2n-1)λ/4 (odd multiple of λ/4) Or                                                   βl=2π/λ * λ/4                                              [ β=2π/λ] … Continue reading

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ULTRA HIGH FREQUENCY (U.H.F) TRANSMISSION LINES-1

ULTRA HIGH FREQUENCY (U.H.F) TRANSMISSION LINES (TRANSMISSION LINES AS CIRCUIT ELEMENTS) Ultra High Frequency lines commonly abbreviated as U.H.F lines are one of the types of the transmission lines. Ultra high frequency lines have operational frequency range from 300 to … Continue reading

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DISTORTIONLESS LINE

Definition DISTORTIONLESS LINE A transmission line is said to be distortionless when attenuation constant ‘α’ is frequency independent and the phase shift constant ‘β’ is linearly dependent on the frequency. Condition for line to be distortionless

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LOSSLESS TRANSMISSION LINE AND ITS CONDITION

CHARACTERISTIC IMPEDANCE ,Z0 DEFINITION I:- Z0 is defined as the ratio of the square root of series impedance per unit length ,Z to the square root of shut admittance per unit length,Ỳ Z0=Z/Y =R+jωL/G+jωc

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TRANSMISSION LINE AND ITS TYPES

TRANSMISSION LINES Transmission lines are used to carry electromagnetic energy from one point to another . It means it transfer from one point to another. Generally it consists of two conductors. It is used to connect a source to a … Continue reading

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