Antenna fundamentals, Electrical Engineering

Assignment Help:

Antenna Fundamentals

We shall discuss here only the fundamental concepts needed to understand the role of an antenna as a power-coupling element of a system. Figure illustrates the elements of a communication

321_Antenna Fundamentals.png

system that involves antennas (with no conductors in the propagation medium) and the following nomenclature:

Pt Power generated by the transmitter

Lt, Lr Transmitting-path loss (representing the power reduction caused by the transmission line or waveguide that connects to the transmitting antenna) and receiving-path loss

Lta, Lra Transmitting antenna loss and receiving antenna loss

R Distance of separation between the antennas

S Signal power available at the lossless antenna output

Sr Signal power available at the receiver input

Radio transmission consists of antennas at the source and at the destination. It requires the signal to be modulated on a high-frequency carrier, which usually is a sinusoid. Driven by an appropriate carrier, the transmitting antenna launches an electromagnetic wave that propagates through space without the help of a transmission line. A portion of the radiated power is collected at the receiving antenna.


Related Discussions:- Antenna fundamentals

Sources of power dissipation in cmos logic, Describe the three main sources...

Describe the three main sources of power dissipation in CMOS logic. Hence calculate the power dissipated in a CMOS ASIC of 40,000 gates operating at a frequency of 133MHz with a s

Impedance / DUTT, 3) The impedance for a 120 km, 230-kV line is given as j ...

3) The impedance for a 120 km, 230-kV line is given as j 0.9 ohm/km and j 0.6 ohm/km for self and mutual terms respectively; resistance is neglected. The mho characteristic for the

Explain how to represent power lines, Explain How to Represent Power Lines?...

Explain How to Represent Power Lines? The equivalent circuit of a power line depends on the length of the line and on the accuracy of the model required. In general, any power

Discuss dma operation in brief, Discuss DMA operation in brief. The fun...

Discuss DMA operation in brief. The fundamental idea of DMA is to transfer blocks of data directly among memory and peripherals. The data don't suffer the microprocessor but th

Clapp oscillator, having looked at the circuit, i first wanted to start my ...

having looked at the circuit, i first wanted to start my frequency from 0 and plot for 10000 to 20000. so in matlab i used f = 0:10000:20000; but the equation for frequency is f= 1

Design mux, Design 8:1 Mux for a given function, f=Σ (0, 1,5,7,9, 13)

Design 8:1 Mux for a given function, f=Σ (0, 1,5,7,9, 13)

FET, shockely equation?

shockely equation?

Military services - application of software defined radio, Military Service...

Military Services - Application of Software Defined Radio With the use of SDR technology, the military can reduce radio development costs by providing a common platform to whi

Find the initial current, In the circuit shown below, the capacitor initial...

In the circuit shown below, the capacitor initially has a voltage across it 4 Volts (at t = 0). a.  Write down the expression for V C (t) when the switch is closed. b.  Writ

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd