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Thanks for the great compliment. Unfortunately I never got around to making chapter 5 or beyond and now I have moved on to a new job outside academia. I still hope to make videos through chapter 5, but I’m not sure when it might happen. Best of luck in your career and learning 😀

Not sure which simulator you use, but CST should let you define the loss tangent for custom materials. This should account for the definition of complex permittivity

Thanks for the great feedback! Glad it helped.

Exactly, VSB is the abbreviation for Vestigial SideBand

Thanks for the comment. Sorry my videos weren't helpful for you, hopefully you can find a resource that improves your understanding!

You're most welcome! Glad it helped.

@@Dr.C.Eng.Education I had a solid 100 points at the final and graduated sir:))) thank you

Thank you! Glad it helped.

That's awesome! Best of luck on your PhD journey :)

Could be many ways - - for example consider Ohm's law from the field theory perspective where the fields may be time-variant (just like an AC circuit). Now you can combine the concepts from this video with Ohm's law and you will get an idea of how we can analyze circuits or nodes from a field theory perspective. However, usually it is a lot easier to apply phasor analysis for a large circuit.

Thanks for your comment! I am glad it helped.

Glad to hear that!

You're welcome! Good luck on all your studies.

Thanks! Glad it helps.

Awesome! Glad they are helping!

Hi -- Yes!! You are correct! This is a typo on my slides which are first appearing around 4:22. The frequency deviation after x48 multiplier should be either 76800 Hz or 76.8 kHz. Also we can verify the following math: 0.075 MHz = 75 kHz = 75,000 Hz which is about half of the 0.2 MHz channel as you have identified in in the FCC guidelines. The figure 4.33 and the Lathi/Ding book also confirms this result. I wish I could offer you some extra credit for your helpful comment, but I think your good observational skills will pay off in your future studies and career. Best of luck!

Thanks for the comment. The text has a very nice explanation in the footnotes, page 189 in the 5th Edition. Basically there is no impulse at +/- f_c, where f_c is the carrier frequency.

Hi, thanks for the comment. For many students repetition and review may be helpful aspects for understanding. Furthermore, since communication systems can be studied in both time and frequency domain, video 4 is more focused on the time domain and video 5 is more focused on the Fourier Transform. This also follows the Lathi/Ding text I use. If the repetition in a video is not helpful, I can recommend using the fast forward and playback controls built into the UA-cam interface.

Thanks for the comment. I am glad these were helpful, good luck on your future studies!

Yes, I am familiar with that text. However, these lectures follow most closely with the Lathi/Ding textbook.

Thank you so much for the kind words. Best of luck with your future studies!

So true!

Thanks for the comment. It is quite possible there is a mistake there. When I get a chance I will double check this.

Thanks! Good luck on your studies

Hi, thanks for the comment. I can recommend a strategy to check your work. First you could try using LTSpice or another simulation to verify the results in the video. Then, if your simulation matches this result, you can create additional simulations to verify the sub-problems created via superposition. Check your work by hand and compare to the simulation superposition problem to find the source of any errors. Good luck and let me know how it goes!

@@Dr.C.Eng.Education Hello! Thanks for the reply! Yeah I checked my work again this morning and I had made ONE crucial mistake when solving for the currents of the voltage source…I didn’t combine two resistors that were in parallel correctly…after correcting that the answer was the same! Thank you so much

@@jasonjuarez8692 Thanks for the update, glad you figured it out! I think your strategy of going back and solving problems using multiple methods is a great study idea! I recommend this to all students. Good luck on all your studies.

@@Dr.C.Eng.Education Thank you! I appreciate you! I definitely find understanding multiple methods helpful when solving more complex problems

Thanks! I’m glad it was helpful. Best of luck in your studies.

Thanks, I hope the video was helpful 👍

Welcome, glad it helped!

Most welcome, glad it helped!

Thanks for watching!

Hi, thanks for the comment. Are you referring to polarization loss in a link budget for something like an RF communication link? That polarization loss might be described as a normalized value between zero and one when taking the dot product between polarization vectors of a wave and an antenna. Rather different than what is discussed here. As far as further consideration of the role of materials with realistic sigma/omega, I suggest reading ahead to Chapter 7-4 on propagation in lossy media. There is a solution for a linear polarized E field as equation 7.68. This solution further separates \gamma into the real attenuation component (\alpha) and the imaginary phase component (\beta). Then simplifications for various media are discussed. This topic is further discussed in many graduate level textbooks. For example the David Pozar "Microwave Engineering" text discusses wave solutions for various cases of dielectric and frequency. Best, Dr. Chrysler

Glad it helped!

Thanks for watching!

Thank you! Good luck on your studies.

Thank you! I am glad it is helpful. Although the section in the Ulaby text is a little short, the math is somewhat more complicated than it initially appears. Best of luck on your studies and career.

Thank you! I am glad you like it.

Thank you, this is correct! In the figure showing the diode circuit elements D2 is mistakenly placed in reverse. However, in the simple diode circuit model D2 is replaced with a voltage source in correct polarity. When I get a chance I will upload a correction. For those following the text -- please compare to the correct Figure 4.5 (a) in Lathi 5th edition.

Thanks for the comment. It is a tricky concept. These two values of f_LO, 1455 kHz and 2365 kHz are selected because they are images. It is mostly used to demonstrate that there is a design constraint on the RF filter. The oscillator IF is constant, but there might be two channels overlapping at the receiver without a proper filter.