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hello zorro,
my antenna is a mictrostrip 5x16 array... and I optimized my patches for best result (gain, beamwidth, low sidelobes)! the only thing that it's not quite right the direction... i need it to be a broadband radiation and it is but a 45 degrees!
I hope that explains my situation...
Hey guys,
I've designed a good Microstrip planar array antenna with good gain and everything; however, the mainlobe direction is not 90 degree. Anyone has tips in how to change the antenna direction?
I don't want to make major changes because it took me long time to get this result :shock...
Hello guys....
is there a formula for this "increasing rows of your patch antenna will decrease your beamwidth"? I'm trying to find something that say it!
Last I checked, when I add more rows to my rectangular patch antenna, my beamwidth decreased as well as my gain!
Please let me know if...
hello guys,
I'm working on XFDTD and I'm getting S11 parameter for my rectangular microstrip antenna S11 value of -25 dBa (amplitude) at my frequency and S11 of -15 dBi (isotropic)... which one is true and what's the difference between them??
I'm trying to calculate the bandwidth from this...
Re: planar array
Hello Harman,
I'm currently working on 5x16 planar array! Can you help me out with your code of 8x6 elements?
I'm having problem with my matrix!
Thanks,
sam
Hey Kohi
my design is 1x16 array antenna and I'm getting about 20 degrees! I want to reduce the degrees, what should I don? I believe you misunderstood me. My design is fed with one single feed and one patch feed the other until the last one "number 16". I'm not looking to increase my azimuth...
hey guys,
I'm designed a 1x16 rectangular array patch antenna on high frequency and I'm getting about 19 dBi gain. My problem is my azimuth beamwidth is very large "20 degrees" and I want to drop it down to 10 degrees.
I tried the following to reduce the azimuth angle:
1. increased the...
hello Yadavvlsi,
Do you think we can omit the SiO2 from the fabrication process if we have enough thickness of Si underneath the patch? I'm thinking of 250um thickness of Si under the patch and 250um of air cavity!
Please advice,
Thanks,
Sam
Hello Yadavvlsi
So, we will have to remove the silicon dioxide (SiO2) after depositing the patch? The only think that confuses me is that I'm not sure why most of the paper used SiO2 on a silicon substrate without using this layer in calculation ( patch and inset fed dimensions)!
Please advice,
Hey guys,
i'm not sure why do we need SiO2 on a Silicon substrate for Micromachined microstrip antenna? I've designed a rectangular array antenna on a silicon substrate with air cavity, but what I've seen on multiple papers that they use a thin layer of SiO2 on top of the Si substrate for some...
hello WimRFP
how can you check the current distribution in HFSS? I have no idea! Let us say I have a series fed patch antenna on XY plane and I'm adding patches in series how can I check the current source? I'm exciting my array with a waveport! Does that work?
Thanks
sam
Hello sv1437
In my single patch I'm getting about -28db and on the four patches I'm getting about -8db! As for gain, I got about 2.4 in the single one and about 1 for the four!
Thanks,
Sam
Hello
I'm designing a rectangular array antenna with inset fed on a high frequency. I designed my patch and I got not a great gain (2.7) but when I add more patched to my array I'm looking my gain! I've attached a snapshot of my single and 4 patches array antenna design....Please help if you...
My problem is not with the software but my design is done using HFSS! I thought i'm not getting good results because of the software that's why i'm asking??
I'll check those feeding techniques and I'll let you know if I have any question.
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