As you said, the wire with half the wavelength can radiate even if impedance is matched? Also do we need to increase or decrease the length of trace not be be multiple of wavelength?
It depends. Impedance matching does not change the physical length of the antenna/wire. The fundamental resonance of a thin linear conductor occurs at a frequency whose free-space wavelength is twice the wire's length, i.e. where the conductor is 1/2 wavelength long. But this is only in free-space, so in general, the 1/2 wavelength is more of a "rule of thumb" than something that is accurate. Thanks for the question. I've added it to my "to do" list for a future video.
Can you make a video explain about the thing about the radiating length lambda over 2 of the antenna. I am quite currious since I do not take any lecture on antenna
Without a digital clock, you don't have digital signals. If you want to send a 1 or a 0 over a channel, you need to do it by sending a waveform for a finite (non-zero) amount of time, T. One waveform will be used to represent the 1 and a different waveform will be used to represent the 0. So you need some way of marking time, so you know when to switch to the next data bit you want to send. That's what the digital clock does. This video might help: "What is a Constellation Diagram?" th-cam.com/video/kfJeL4LQ43s/w-d-xo.html
Great explanation. Thanks. Audio was ok for me.
Good to hear, thanks. Glad you liked the explanation.
As you said, the wire with half the wavelength can radiate even if impedance is matched? Also do we need to increase or decrease the length of trace not be be multiple of wavelength?
It depends. Impedance matching does not change the physical length of the antenna/wire. The fundamental resonance of a thin linear conductor occurs at a frequency whose free-space wavelength is twice the wire's length, i.e. where the conductor is 1/2 wavelength long. But this is only in free-space, so in general, the 1/2 wavelength is more of a "rule of thumb" than something that is accurate. Thanks for the question. I've added it to my "to do" list for a future video.
Can you make a video explain about the thing about the radiating length lambda over 2 of the antenna. I am quite currious since I do not take any lecture on antenna
Thanks for the suggestion. I'll add it to my "to do" list.
Please do the Fourier transform of a PWM signal with a given frequency and duty cycle.
Thanks for the suggestion. I've added it to my "to do" list.
what is the significance of clock signals in digital communication? please give some intuition i am a bit confused professor
Without a digital clock, you don't have digital signals. If you want to send a 1 or a 0 over a channel, you need to do it by sending a waveform for a finite (non-zero) amount of time, T. One waveform will be used to represent the 1 and a different waveform will be used to represent the 0. So you need some way of marking time, so you know when to switch to the next data bit you want to send. That's what the digital clock does. This video might help: "What is a Constellation Diagram?" th-cam.com/video/kfJeL4LQ43s/w-d-xo.html
@@iain_explains well thanks for the answer