on m To ? A transmitting aerial has a gain of 6 dBi and is mounted 180 m above flat earth. The transmitted power is 5 W at 50 MHz and the 16 m high receive aerial is 18 km distant. Calculate the total field strength at the receive aerial if the reflection coefficient of the earth is -0.8.

A 10 MHz carrier is frequency modulated by a sinusoidal signal of 500 Hz frequency and the maximum frequency deviation is 50 KHz. What will be the bandwidth of the FM signal?

An antenna with a radiation resistance of 48 ohms, a loss resistance of 2 ohms, and a reactance of 50 ohms is connected to a generator with open-circuit voltage of 10 V and internal impedance of 50 ohms via a N4-long transmission line with characteristic impedance of 100 ohms. The power radiated by the antenna is ..... .. 0.1384w 0.1384dB 0.148dB 0.148w

The answer according to the book is 0.49 mV/m

Consider a lossless antenna with a directive gain of +6 dB. If 1 mW of power is fed to it the total power radiated by the antenna will be

If the amplitude of the input reflection coefficient is 0.5 with an angle of 45 degrees and the length of the transmission line is I= 0.15A, find the impedance of the load. (Z0=50ohm)  Zin =? SWR=? YL=? ZL=?

The answers according to the books are 0.23 mV/m , 0.53 to 0.99 mV/m

a.What is the attenuation of 350 ft of RG-11 U coaxial cable at 100 MHz?b. A transmitter has an output power of 3 W that is fed to an antenna through an RG58A/U cable 20 ft long. How much power reaches the antenna?c. Two engineers have a disagreement over the selection of transmission line for connections within a 100m Data Centre on a project that is at risk for cost overrun. The first engineer is arguing in favor of using multi-mode fibre while the second engineer would like to use single mode fibre. You are the project engineer. Decide which of the two transmission lines to use and justify your answer.d. For typical silica optical fibres with ncore = 1.45 and Δ = 5 x 10-3, calculate nclad and NAe. For a typical silica fibre with D (@ λ = 1.3μm) = 2.5 nm ps/km and a semiconductor laser source centred on λ = 1.3μm with Δλ = 4nm: the bandwidth length BL ≈ 100 Gbps km (singlemode, step-index). What transmission speed is possible at a distance of 5km?f. A link from point a to point b is…

Please I need a complete solution to the problem in the image. Thanks!

Q1. Choose the correct answer to the following questions: A-Which of the following type of antenna has a directivity of 0 dB? a) Horn antenna b) General antenna c) Patch antenna d) Isotropic antenna B-Amongst which of the following shows the relation between half power beam width and the directivity of an antenna? a) A larger HPBW equates to more directivity HPBW equates to less directivity A smaller HPBW equates to more directivity d) None of the above c) A smaller C-The region of 0.25 m from D=1.5m antenna at 300 MHz is. a) Far field b) near field c) Fresnel field d) none D- Which of the following lobes of an antenna radiation pattern is contained the most power? a Major lobe b) Minor lobe c) Side lobe d) Back lobe E- Suppose we have a copper conductor with a frequency of 60 Hz. We need to find the skin depth of the electromagnetic wave in this conductor. Conductivity of copper (a): 5.8 x 107 S/m. the skin depth is a) 9.5 mm b) 20 mm c) 10 cm d) none