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Recent content by Shirpo

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    Is it possible to create a MSP antenna work at 2.4GHz with very thin fr-4 substrate?

    Hi, I have seen plenty of MSP antenna design work at 2.4GHz using the regular fr-4 substrate with the thickness of 1.6mm. So I'm wondering can we do the same but using even thinner fr-4 such as 0.5mm, 0.8mm or even 0.16mm. I tried to search google but most of the article only using the popular...
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    How to I properly attach cotton substrate to copper patch in an antenna?

    Sadly I will be using the cotton fabric as substrate, the one that has around 1.3 to 1.6 Dk, my goal is to get close to the frequency of my simulation which is 2.45GHz, last time I tried regular cheap tape but It didn't work out too well (either the tape didn't stick well all the copper to the...
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    How to I properly attach cotton substrate to copper patch in an antenna?

    Oh so I can use adhesive tape, kinda dumb question but do I put the tape above the copper or between the copper and cotton (since most silicon tape is 2mm in thickness) and does it affect the dielectric constant of the network analyzer when using the tape? Just want you to know you helped me a...
  4. S

    How to I properly attach cotton substrate to copper patch in an antenna?

    Hi, thanks so much for answering, my project require to use small piece of cotton fabric as substrate so I kinda have to use that. May I ask one more thing? What advantages does epoxy resin has over some other ways to bond those two materials? (using adhesive tape or sewing come to mind). Is it...
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    How to I properly attach cotton substrate to copper patch in an antenna?

    I want to build a prototype of a simple microstrip patch antenna with copper patch and cotton substrate, the design work fine and the frequency show correct in HFSS, however, I don't know a proper way to attach the cotton substrate to the patch and ground without effecting thing like dielectric...
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    Question about hexagonal patch antenna frequency and design

    May I ask does improve impedance matching mean It is also improve return loss and achieve the resonant frequency? And what does step match mean? Does that mean I don't necessary need to follow the formula to calculate the hexagonal patch's frequency? Sorry I'm still new to this so please help me.
  7. S

    Question about hexagonal patch antenna frequency and design

    Hi, I'm learning to design a hexagonal patch antenna with 2.4 GHz, so far I only find these example and document as how to design one. It look like there is a set formula to calculate the resonance frequency of the hexagonal patch, so I want to ask why they add the mini 25.24mmx7.46mm to the...
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    Can I calculated the parameters of an antenna using data HFSS?

    Hi, this is probably a dumb thing to ask but I'm approaching antenna first by simulation in HFSS, now that I finished simulate an antenna, plot the result like return loss, VSWR, gain and directivity and know their numbers. Can I learn how to calculate those simulated numbers somewhere by...
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    How do I measure SAR of an antenna in HFSS?

    I have a antenna ready, did all the normal simulation normal but I don't know how to measure SAR.I heard you need a body part for this which I also had in ANSYS Electronic Desktop but now what do I do with it. Tried to surf google but it doesn't have some detail guide about how to measure this.
  10. S

    How do I tune return loss in hfss?

    Hi, I'm working on a small project to practice using hfss, my project is to redraw and simulate the antenna in the picture to give the same result as a antenna in an article. but when I finish the result of the return loss is quite different, in the example the return loss can reach to -27dB...
  11. S

    How do I draw multiple cut like this picture in HFSS?

    Hi, I'm new to antenna design and this is my first time using the ANSYS HFSS as well, so I'm wondering what is the most effective way to draw the patch in the picture correctly, do I just draw multiple mini rectangles then subtract them? If so is there anyway to be sure that the length is...

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