L 31 | Selectivity, Sensitivity, Fidelity | Analog Communication | GATE | Communication System

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[@Rpp-n9w]

Thank you 🙏

[@rajeevsingh8876]

At 5:05 you said, at frequency fc the circuit will provide highest impedance and lowest resistance. That's a bit confusing(1). Also I read somewhere that these circuits provide current amplification. The RF Amplifier circuits use parallel LC circuits. At resonant frequency such circuits provide highest impedance and lowest current. How can it amplify the current when the current is lowest (2)? Can you please elaborate on these two points ?

[@phaalgunipaarijaat9634]

At 10:58 she also said , 'If you still have any doubt you can put that in the comment section and I will try to resolve as soon as possible.' 😂😂

[@jhonjvare09]

This is only an LC bandpass filter and it will let pass the signals within the range frequency F1-F2. When the LC circuit is resonating, reactances inductive and capacitive will cancel each other remaining only the real impedance. This means that at fc, the impedance is pure real in theory and it will exhibit the lowest impedance. What you saw was a matching network, which is a passive circuit used to change impedances. Basically, RF amplifiers use this circuit to match the amplifier to the load or source impedance and get the maximum transfer of power in theory. The topology for the matching network might be an LC or Pi-network or T network. The selection of the topology will be based on the bandwidth requirements. I hope this helps little bit.....

[@Kylej1970]

Thank you for breaking this down. I'm new to understanding electricity

[@VishwanathRathod-bh6te]

Thank you mam good explain 👍

[@Er.rohitsingh]

Awesome 🎉

[@ababreu]

Muito Bom! Parabéns!!!

[@kumar-je2xr]

mam i think i am love in with you ......very nice explaination

[@kudipudisatyanarayana8278]

Very neat explanation, thank you.

[@user-ms1ty4st4v]

where are the calculations for sensitivity and fidelity?

[@repairyourcell777]

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[@shaiksuhail5361]

Beauty with brain

[@rajnarayansaroj1410]

Good morning Basic is clear as you're video as per vhf radio Aeroflesex 3920 radio test set How to test

[@deepakraj213]

Jai hind 🇮🇳 Thanks for this topic..it helped to my Board of my promotion...

[@md.alizafir1379]

Thanks ma'am!

[@hassamkhan6309]

Mam. Agr possible hoto lectures Hindi me upload krdain. Thanks & Good explanation👍

[@vishnuganesh1724]

simple and clean....thank you

[@vusubhargavreddy1157]

👂

[@Whynotdhanush]

Edhey vaddhanedhi

[@vishnuganesh1724]

@@Whynotdhanush endi mowa andaru Naa meeda paddaru... 😂

[@shaiksuhail5361]

@@vishnuganesh1724 ante ante

[@robind9745]

At last Vaishali made me understand 🦋

[@chandrakanth7754]

Good explanation 👏

[@Onlyforkids72]

Good explanation quality 👍

[@VinayKumar-ij2vi]

Nicely explained mam

[@smileyboy6409]

Mam thoda hindi mai describe karo jyada samajhme aaega

[@jkdash4436]

Very nice

[@amrendrakumar-yr3zw]

Impedance and resistance are not reciprocal.but u r telling impedance increases resistance decrease, wrong explanation....

[@shrikantk4458]

I can not find notes at given link

[@abhishekashtaputre767]

Gain and noise figure of the receiver.

[@kalyangoud7491]

Nice😊😊

[@pratikshabambatkar6617]

U r so cute mam and also ur voice ... Thanks for this video

[@harekrishna2477]

U r soo beautiful maam

[@hariom0793]

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[@misbahurrahman6507]

I love u💖