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Antennas are generally used "outside". Placement considerations include desired field of view and the losses associated with the particular connection (transmission line).
Your sketch shows an elevated position and cabling of up to 11 meters. That will have insertion loss and be significant...
Tony,
The modeling I suggested does not depend on being in the near field. I was just trying to get a feeling for the dimensions when I asked about near/far field to see how it would impact computer RAM requirements. Overall it appears that you could model the tx/rx antenna system with...
This is now a different question. That being said, this to be something that could be done with HFSS. It is essentially the evaluation of s21 (or s12) where one antenna is port one and the other is port 2. The 3 wavelength separation makes a straight forward evaluation possible without...
I was curious about Mr. Freebird's comment above and simply searched on "SMA to K adapters". I found a number of "commercial" suppliers with offerings.
I repeat my warning: Use with caution. This is without knowing the specific situation and it may be acceptable.
Anytime one starts mixing connector types a great deal of caution is generally appropriate. Performance usually degrades and sometimes the connectors are damaged. https://www.microwaves101.com provides useful guidance. I would point you to their connector page and also suggest that you read...
Just a caution, It sounds like you may be using one antenna as a transmitter and the other as a receiver and have established a link between the pair. Now the relative positioning also plays into the evaluation.
Antenna characterization can be difficult to understand at first. I would recommend a book by Kraus, Antennas as a place to start. Probably two of the most basic measurements are directivity (pattern shape) and gain (pattern shape and efficiency). These are usually measured in dB so study how...
Just an observation: Both amplitude/power distributions and phase distributions are very important in array performance. Amplitude/power tapering is usually done to fool with sideline level and phase is manipulated usually for scanning. You do not say describe your objective. Take care as...
I this is indeed a "blade" antenna. It is probably some variation of a monopole, maybe with some sort of "top loading" intended to make it appear "electrically" longer and hence operate at a lower frequency than the physical length would allow. You might also call it a monopole or loaded...
Hello x529,
Do you have a transmission line "specification" in mind? Do you have values to place on the conventional characteristics: s11, s21, Zo? How about size and materials? PCB looks like the medium you are considering but maybe you have something else in mind? You mention UWB...
Getting a high performance launch into a micro strip with side grounds and vias often is achieved with a combination of simulation and lab testing. I have often used Hittite and Southwest Microwave connectors and demonstration boards as a guide. The details of your particular connector and...
The question is why you might want to do so? HFSS is an electromagnetic simulation tool and adding a structure like this to a model is likely to drive you to an unnecessary complex mesh and stands a chance of exceeding the memory capacity of your computer without adding any real credibility to...
I would be cautious about drawing any conclusions about a structure that is modeled over your stated 1-110 GHz frequency band. Just having a correct dielectric constant value over that range is problematic. Various propagation modes are also possible, particularly at the higher end of your...
I would look in (ieee) APS and MTT. As I mentioned above articles (and books) by David Pozar have additional useful bits. I do not know of one specific reference. For a while, a lot of work was done for UWB applications but not so much now. Older reference material in the literature can...
Broad bandwidths are difficult but practical with aperture coupled patches. I designed one using parasitic patches, stacked that reached 50% bandwidth (s11 -10 dB, about 6 dBi gain, around 3 GHz to 6 GHz ) and lots of fiddling with the feed and patch spacing. As I recall I found a reference in...
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