Antenna-Theory.com Presents: Analysis of the Patch Antenna

[@saptarshipal7393]

Nobody has explained patch antenna so crisply in the internet. Thanks sir for teaching what's required.

[@Mark300win]

You deserve a gold medal 🥇 for this video! On behalf of all Ghz rf engineers thank you!

[@davidmusoke]

I wonder whether this guy knows how good and talented he is at explaining complex stuff. I was shocked that I understood half of it...and I have no formal RF antenna training. Just a baseband analog and digital guy. Bravo for such an excellent tutorial !!!

[@sunable1]

This is unbelievable! i have cracked my head reading useless books to understand patch antenna.I must confess that you have put me out of my misery.i tried designing one using CST Microwave studio but i did'nt understand the concepts,now i am going back to the lab.I like the way you explained the fringing effect and how it gives rise to the radiation in the patch.you killed it man!

[@uploadJ]

ANYTHING to do with self-resonant antenna structures will be dealing with either 1/4 wavelength or 1/2 wavelength lengths along the length and width. Understand this and half the battle is won.

[@kmchen9470]

thanks for your bravo explanation. I have no knowledge about antenna, but you make it simple and easy to understand.

[@kunjdesai1]

Sir, Take a bow ! I guess no book explains as simple as you did. just wonderful...:) Especially the point of feeding microstrip(@ 7,00 min)..out of the world. I would definitely like to connect with you.

[@pjbevel]

@SeriousTyro You can put a matching network in there if you would like. Another method is to use a quarter-wavelength transmission line.

[@pjbevel]

@SeriousTyro The txline section of the antenna theory site has this described on the transmission5.php page

[@noahmunson9505]

My grandpa is the one that designed the micro-strip antenna, Robert Munson, he goes by Bob though.

[@pjbevel]

If the tx line is short (less than a tenth of a wavelength), then the antenna measured at the end of the tx line is about the same as the antenna. If the microstrip line is long, then you need to factor it in. It rotates the impedance around the Smith Chart. The only shortcut is if you have a 50 Ohm antenna and a 50 Ohm tx line, then the length of the line doesnt matter & the input impedance remains 50 Ohms. The equations are in the tx line tutorial section of the antenna website.

[@graysonvincenzo4336]

I know im randomly asking but does someone know a method to log back into an Instagram account..? I somehow forgot my password. I love any help you can give me.

[@johnnyzyaire602]

@Grayson Vincenzo instablaster =)

[@graysonvincenzo4336]

@Johnny Zyaire thanks so much for your reply. I found the site through google and I'm in the hacking process atm. Seems to take quite some time so I will get back to you later when my account password hopefully is recovered.

[@graysonvincenzo4336]

@Johnny Zyaire It worked and I actually got access to my account again. I am so happy:D Thank you so much, you saved my account !

[@johnnyzyaire602]

@Grayson Vincenzo happy to help :D

[@karthikeyaglr123]

brilliantly insightful, especially the gain of patch antenna, kudos to you !

[@uploadJ]

WHAT part does the dielectric under the patch play? Is the 1/2 wavelength of the patch a half Lambda *under* the patch (in the dielectric), or in air *over* the patch?

[@ryans9687]

I wish I could see your video before my last interviews!

[@marcelobesch]

Thank you very much for this! I couldn't understand much before watching your lecture. There's just one thing making me wonder: according to Carver and Mink in Microstrip Antenna Technology, the input impedance of a rectangular microstrip antenna with no advance on the feedpoint should be of 120 ohms, not 400 as it is said in the video. I am just starting to understand anything about microstrip antennas, so I don't know who's right here.

[@carlinconnell7715]

Excellent and useful video

[@SeriousTyro]

It was mentioned that there was a high input impedance to the patch antenna so there would be quite a bit of reflection. Would you put a matching network between the transmission line and the antenna?

[@surafamily]

Thank you for this video on analysis of patch antenna. Could you please tell me when the same patch antenna is modified to have any fractal shape at its outer edge(may be square cut), how the analysis may be done? Is there empirical formulae for the planar fractal antenna design and analysis?

[@MMISSOURICLEM]

THIS IS A VERY USEFUL SERIES, THANKS FOR THE HELP.

[@CAM3322Mr]

There is the theory of Reciprocity...what is on my mind is what if instead I have an incoming EM wave I would think that the voltage signs would be opposite on the patch given the same feed? Also, instead replace the t-line feed with a probe feed, what does the E-field or fringing field or voltage potential look like then? Moreover, if I increase the distance of the GND away from the patch because of multiple layers do I essentially reduce the fringing fields? If so, what is the consequence of this?

[@paulkazjack]

Corey Bergsrud Yes you do. do not increase the distance. Go easy with the feed.

[@turkayp]

Excellent explanation. Thank you very much.

[@feicodeboer]

Good explanation, thank you. I assume the dB's should read dBi or did I miss something?

[@alecjw11]

Great video - love to learn these rules of thumb and real world figures...

[@nabeelhayat]

Very nicely explained...... can u tell how do impedance matching works using quarter wave transformer ?? and there are other ways to increase BW as well.... :)

[@gingarrison104]

is the polarization direction useful?

[@saimounikasudula1747]

Thankyou so much.And make more videos related to electronics concepts please!

[@francescofilice7210]

Hello :) very nice and useful video. I am actually looking for resources to understand aperture coupled patch antennas, do you have any advices?

[@JonathanAdami]

Great video, I no longer wonder how patch antenna work ;) Cheers

[@ambientsoda106]

so what components do I need ot build a mircostrip anntenna; as I thought an alterantive wave passed thrugh a cold of wire is what makes an antenna. But thats justa magnetic wave; but is there a way to create a crystal atenna?

[@murphyomni1542]

thx for such a powerful tutorial

[@AKSinfo4u]

do you have video related to microstrip filter analysis and design??

[@preethiravichandran5935]

what will be the main difference if I design it in a single sided pcb-both patch and ground on the same side?

[@alysalys137]

if (in air) L= lambda/2, then (according to the picture) W > lambda/2....then why do you take the gain of "short dipole", if it's longer than half wave dipole, and must add gain of 2-2.15 db. am i wrong?

[@IDK61145]

how can I find the input impedance of the antenna and the microstrip transmission line?

[@amanksingh04]

Thank you, very nicely explained.

[@joshbolinsky4800]

You're the man Pete

[@turanbilen9033]

hello pete and friends. what is the matterials to built small patch antenna . can you help me

[@YellowsourceOrg]

excellent explanation, kudos.

[@fenghc1]

Excellent job!

[@arunperiyasamy5900]

how to calculate width of the input transmission line

[@pragtinarang]

Can we not feed the antenna along the L side and not the W side. What will happen then?

[@JonathanAdami]

Intuitively I'd say: "it's like decreasing W and increasing L" so: Impedance increased and resonant frequency decreased? Just guessing here

[@jeevarekha.r6184]

What is mean by filagate

[@krat0102]

nice lecture

[@abhisheksingh-ho2ht]

are you drunk . i can't understand your words . please be clear

[@peterb7615]

shutup abhishek, you are a moron

[@onclick9787]

expln very well but accent kill me

[@Shakarim94]

He doesn't have a strong accent. Judging by your video uploads I guess you are from India. This might be the cause. P.S. your grammar kills me

[@onclick9787]

Shakarim94 .do i need to care abt that ..NOPE especially the virtual english teachers like u whos only job is to point out everyones grammatical mistakes on internet ..btw tanx for watching my uploads

[@Shakarim94]

I didn't watch your videos, just read their titles. If you don't like someone pointing out your mistakes, then why criticize someone's accent in the first place?

[@onclick9787]

Shakarim94 titles had grammatical mistakes ?? lol ... RIP ur english ur IQ ur sense of humor ... NO more argue plzz .. m just not intrested

[@Shakarim94]

LOL, where did I say that your titles had mistakes? Your intellegence is surely below average )))