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Is it a resonant loop (circumference= 1 lambda)? So current distribution cannot be regarded as constant. Your assumption of the fields may be incorrect. In fact the averaged Poynting vector lies on Z axis! Tell us if you mean a small loop antenna.
Hi
I read a paper in which exact structure of a fat dipole microstrip antenna is described.
My question is about the feeding structure. Is it necessary to set up for example a coaxial feed and its entrance as input port or we can draw port right at the antenna?
Is there any difference between...
Hi marya2
As you know unlike the GSM in UMTS (i.e mainly WCDMA) you should consider the network load to determine the cell radius and you cannot use the simple link budget formula. Take a look at this:
http://jwcn.eurasipjournals.springeropen.com/articles/10.1155/2009/314814
Re: Patch antenna with coaxial feed
I guess HFSS help directory in your computer contains it!
Search for the file HFSS Probe Feed Patch Antenna.pdf or pfpaGSG.pdf in installation directory.
See below picture for the structure analysed in the mentioned GSG (Getting Started Guide document).
If you don't care about field penetration into the conductor or resistive losses, it's better to use PEC for simplicity. HFSS treats the surfaces of PEC object as PEC boundaries so that there exist no electromagnetic field inside. You can define PEC boundary on 2D sheet objects to represent...
Hi! It implies that in TDD ( Time Division Duplex ) mobile systems , e.g. TD-CDMA , TD-SDMA ... a user may have a software that enables the mobile phone to use as antenna repeater?! Any idea?
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Push-to-Talk uses GPRS or EDGE channels to send voice ( it is VoIP ) , and not a...
In transmitting radiation efficiency and gain are important, in receiving radiation efficiency and gain are important, also because of importance of signal to noise ratio (S/N) , you should have better performance, I mean side lobe level and back lobe. So you can consider use of ground plane in...
Hi Martin:-) You mean one antenna to work as transmitting and receiving antenna simultaneously? In applications like radar, that sending and receiving occurs at same frequency, transmitting and receiving with a shared antenna is possible with a duplexer. But if you want to use for GSM, Uplink...
Hi, as you may know, there are only three independent variables for the log periodic antenna design, which can be chosen from the directivity, length of the antenna, apex angle, the upper frequency and the lower frequency. [Huang, Yi and Boyle, Kevin, Antennas: From Theory to practice, Wiley...
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