Miniaturizing Microstrip fix Antennas

Re: Miniaturizing Microstrip Patch Antennas

Sorry mamali,
where did u upload your articles? Here there's nothing!
I'm also involved in patch atenna design . I'm focused on slotted patch antenna.
At the moment I'm working on a dual frequency patch atnenna on 13.1 and 12.6 GHz.. It's quite hard.If u are interested I'll let u know my results.


Regards
Lupin

Lupin said:

Sorry mamali,
where did u upload your articles? Here there's nothing!
I'm also involved in fix atenna design . I'm focused on slotted fix antenna.
At the moment I'm working on a dual frequency fix atnenna on 13.1 and 12.6 GHz.. It's quite hard.If u are interested I'll let u know my results.


Regards
Lupin

Click to expand...

Dear Lupin,
1. the papers are now here:
tnx to eirp .
2. I think you need a one middleband MPA, becouse the bands you mentioned are so close. thus, please notify me about your limitations in size, and specifications you need (VSWR or S11, polarization, number of ports, and especially, the height). YES, I AM INTERESTED BUDDY .

regards, murti

According to the requirements, I identified the configuration.. A stacked patch antenna can be the best one..I've some doubt about the use of the probe.. It can be dangerous at 13 GHz.. Anyway, I need to read more and more articles about it.. I've some but I think they are not enough.. The requested bandwudth( VSWR 1:4 ) is 6% and I think I can get it.
Do u work only on patch antennas?
I'm also involved in patch antennas' array configurations so if u want we can exchange our experience.

Best regards
Lupin

Lupin said:

According to the requirements, I identified the configuration.. A stacked fix antenna can be the best one..I've some doubt about the use of the probe.. It can be dangerous at 13 GHz.. Anyway, I need to read more and more articles about it.. I've some but I think they are not enough.. The requested bandwudth( VSWR 1:4 ) is 6% and I think I can get it.
Do u work only on fix antennas?
I'm also involved in fix antennas' array configurations so if u want we can exchange our experience.

Best regards
Lupin

Click to expand...

dear lupin,
i am interested in arrays too. i should mention that the L-probe is not attached to the p@tach, and thick and strong wires could be used, becouse of unsensittivity of the structure to probe diameter.
and, at 13 GHz, what do you exacly need? is it just a study or you wanna make it? couse i think in this frequency, Multi Segment Resonator Dielectric Resonator Antennas have better performance, and is more robust (i think you have some sort of aerospace application for it). i'v some paper on MSDRAs too, and may help u further if i could.

Hi mamali,
I've been working with configurations with probe not touching the patch..
I understand u bend the pin... It's a sort of em coupling..Just a question..What about the surface current distribution? Is it symmetirc?

Anyway in my case I want to adopt a "standard" configuration..
My doubt for what concerns the single radiator is on the robustness of probe fed configuration in case of vibrations.

I never worked with Multi Segment Resonator Dielectric Resonator Antennas, I'm curious, so if u can upload your articles..

Anyway studying my requirements I think I'm going to work with a probe-fed stacked patch antenna. Do u have papers or something about stacked patch configurations? I've just a few articles and I need to study something more..

Thanks in advance
Lupin

Lupin said:

Hi mamali,
I've been working with configurations with probe not touching the fix..
I understand u bend the pin... It's a sort of em coupling..Just a question..What about the surface current distribution? Is it symmetirc?

Anyway in my case I want to adopt a "standard" configuration..
My doubt for what concerns the single radiator is on the robustness of probe fed configuration in case of vibrations.

I never worked with Multi Segment Resonator Dielectric Resonator Antennas, I'm curious, so if u can upload your articles..

Anyway studying my requirements I think I'm going to work with a probe-fed stacked fix antenna. Do u have papers or something about stacked fix configurations? I've just a few articles and I need to study something more..

Lupin

Click to expand...

dear lupin,
1. no tnx please
2. suface waves are not symetric, and even the pattern itself, but there is methods to overcome these: etching slots on the gound plan, proper array configuration, 2-port and 4-port configurations and some more. here are some papers. hope can help. i will post some articles about MSDRAs soon.

BTW, coacoa had some experiences about robastness (in 1.8GHz, i have an example : 28mm airgap, Lh=23mm, Lv=18mm (Lh=horizontal arm lenght of prob, Lv=vertical arm length of probe). thus, if sacle them to 13GHz, it should be about, say, 4mm airgap, Lh=3mm Lv=2.5mm.

murti