ZuoTi.Pro
Question

Given a distortionless cable for 250 MHz. The outer radius is 20 mm. Assume copper conductors...

Given a distortionless cable for 250 MHz. The outer radius is 20 mm. Assume copper conductors are thick (σc = 5.7×107 S/m). The medium has σ = 10-5 S/m, μ = μ0, ε = ε0. (a) Please design the radius of the inner conductor, so this transmission the line can be distortionless; (b) Calculate the characteristic impedance of this line and its attenuation constant; (c) Calculate the distance of at most 10 dB attenuation.

engineering   Electrical-Engineering   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

using the formulas I had written in my image, we can easily calculate the inner radius,

for distortionless cable: RC=LG

(a)inner radius=14.02mm

(b)characteristic impedence=approx 21.3 ohms and then attenuation constant=as calculated above have no units

(c)Here I need some more data to find the distance

0 0
Add a comment
Know the answer?
Add Answer to:
Given a distortionless cable for 250 MHz. The outer radius is 20 mm. Assume copper conductors...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • (a) A low-loss coaxial cable is required for a 100 MHz project. The diameter of the...

    (a) A low-loss coaxial cable is required for a 100 MHz project. The diameter of the inner conductor (copper, σc = 5.7×107 S/m) and the outer diameter of the dielectric to be 2 mm and 7.75 mm, respectively. The dielectric inside this cable is XLPE polyethylene (εr = 2.2, σ = 2.5×10-6 S/m). Please calculated the per-unit-length inductance and per-unit-length conductance; (b) Find the characteristic impedance and its phase constant; (c) A two-wire transmission line is used instead where an...

  • Imagine a coaxial cable like transmission line with square cross-section of inner and outer conductors as shown in the figure. The cable is made transmission line at 300 MHz. 5.8x10. Calculate th...

    Imagine a coaxial cable like transmission line with square cross-section of inner and outer conductors as shown in the figure. The cable is made transmission line at 300 MHz. 5.8x10. Calculate the AC resistance this with conducti e of copper with conductivity σ 80m 4mm 2mm Imagine a coaxial cable like transmission line with square cross-section of inner and outer conductors as shown in the figure. The cable is made transmission line at 300 MHz. 5.8x10. Calculate the AC resistance...

  • P25.5. Compare the loss in the inner conductor and outer conductor of a coaxial cable at 1 MHz. A...

    P25.5. Compare the loss in the inner conductor and outer conductor of a coaxial cable at 1 MHz. Assume the conductors are made of copper, that the cable is filled with a dielectric of permittivity er - 3, and that the dimensions are such that the inner conductor radiu:s a = 0.45 mm, and inner radius of the outer conductor b ae. The ratio of losses per unit length in the two conductors is: (a) 3.05. (b) 2.72. (c) 2.30....

  • Calculate R,L,C,G Values of Coxial Cable (RG402)

    RG-402U semirigid coaxial cable has an inner conductor diameter of \(0.91 \mathrm{~mm}\) and a dielectric diameter (equal to the inner diameter of the outer conductor) of \(3.02 \mathrm{~mm}\). Both conductors are copper, and the dielectric material is Teflon. Compute the \(R, L, G,\) and \(C\) parameters of this line at \(1 \mathrm{GHz},\) and use these results to find the characteristic impedance and attenuation of the line at \(1 \mathrm{GHz}\). Compare your results to the manufacturer's specifications of \(50 \Omega\) and...

  • 2) Consider a coaxial cable with the outer conductor radius of 8 mm and inner conductor radius of...

    2) Consider a coaxial cable with the outer conductor radius of 8 mm and inner conductor radius of 4 mm. Assume a 100 MHz signal. (a) Calculate the parameters R L' G and C" assuming that the conductors are Cu and the space between them is filled with a dielectric material of&r-3 and ơ-103 S/m. (b) From the parameters in (a) determine a, B, up and Zo for the line. (c) How far would a signal travel in this line...

  • 3) For the cable in problem 2) now consider it to be lossless (i.e. perfect conductors and filled...

    need help with question 3 ( question 2 for reference ) 3) For the cable in problem 2) now consider it to be lossless (i.e. perfect conductors and filled with a dielectric material of ε,-3 and σ-0 S/m). (a) Determine a, B, up and Zo for the line. (b) If the line is terminated by a loading impedance Zt.-(30-j70) 2, find the reflection coefficient at the load, the standing-wave ratio on the line, the position of the voltage maximum nearest...

  • 7. a) Calculate the skin depth for a 2700 MHz signal conducted by a flat copper...

    7. a) Calculate the skin depth for a 2700 MHz signal conducted by a flat copper sheet which is 1/4 inch thick. Show the equation, all steps, and (metric, SI) units in your answer b) Fill in the blanks from the word list below. The Smith chart gives you a way to visualize impedance matching and transmission line loss. Once around the outside of the chart is wave length. The smaller the circle you draw on the chart is, the...

  • A coaxial cable used in a transmission line has an inner radius of 0.12 mm and...

    A coaxial cable used in a transmission line has an inner radius of 0.12 mm and an outer radius of 0.76 mm. Calculate the capacitance per meter for the cable. Assume that the space between the conductors is filled with a material with a dielectric constant of 2.9.

  • A coaxial line has an inner and outer conductor radius a = 0.5 cm and b...

    A coaxial line has an inner and outer conductor radius a = 0.5 cm and b = 1 cm, respectively. The line is filled with an insulating material where u = Mo and ε = 2.25€0. The operating frequency is f = 1 GHz. The conductors and the dielectric have conductivities oc = 5.8 x 107 - and o = 10-3, respectively. (a) Calculate the per-unit-length inductance and capacitance L' and C', respectively, the phase velocity Vp, the characteristic impedance...

  • Problem1 In the concentric spherical conductors system shown in Figure 1, the inner conductor has positive charge-q and radius a. The outer conductor has radius b a) Using Gauss' Law determin...

    Problem1 In the concentric spherical conductors system shown in Figure 1, the inner conductor has positive charge-q and radius a. The outer conductor has radius b a) Using Gauss' Law determine the electric field vector E(r) in the region between the conductors (acrcb) and the potential difference Vab between them. b) Calculate E(r) and Vab if the two conductors have a 30 mm, b-40 mm, q 10uc, r-35 mm ε,-8.85x10-12C3(N.m2. For the circuit shown in Figure 2 find: a) the...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT