8 Threads found on edaboard.com: Slot Antenna Air
In case of air filled waveguide or SIW with Er<2.5 performance of SIW slot array is good, and it is easy to predict by using simple calculations. But when Er=4, slot array is performing poor. Single radiating slot in SIW cavity still could be optimized and perform great. Although, when slots are combined in (...)
RF, Microwave, Antennas and Optics :: 10-05-2016 12:39 :: Terminator3 :: Replies: 2 :: Views: 191
Hi I want to design siw slot antenna in 10GHz but I can't put slots in broad wall of the waveguide because the surface current is different with air field waveguide as show in the picture
the with of the structure is a=18.6mm b= 1.57mm Er= 2.33 and amplitude distribution is schebyschef and offset of the (...)
Electromagnetic Design and Simulation :: 08-29-2013 05:16 :: engi_boy :: Replies: 0 :: Views: 701
i have designed, simulated a high gain microstrip antenna, it is basically a stacked form antenna which has some slots with airgap. i got very good gain but i do not know the basic reason of high gain after cutting the slot into the patch and introducing the air gap.
how did (...)
RF, Microwave, Antennas and Optics :: 03-12-2012 12:23 :: vishal_sonam :: Replies: 0 :: Views: 644
Hello to all the members of this great forum.
I have one question and i would like your knowledge about it.
I have designed a 6 slots antenna in 60 GHz using SIW technology, i have placed the radiation air box 1.5*λ away from slots, is this enough for reliable far-field results ,by assigning radiation as infinite (...)
RF, Microwave, Antennas and Optics :: 05-15-2011 04:22 :: geleonti :: Replies: 5 :: Views: 990
I?m trying to simulate a folded slot antenna in HFSS. However, I found that the Z parameters response, strongly depend on the size of the substrate in the X and Y direction. Of course I kept the thickness of the substrate constant and the air box radiation is lambda/4 high. Please, could anybody suggest me how can I determine the (...)
Electromagnetic Design and Simulation :: 05-23-2008 10:19 :: maria fernanda :: Replies: 0 :: Views: 1521
air craft uses slot antenna because it is easy to fabricate.
Patch arrays might be used in air craft for surveillance & the frequency of operation is very hight about 80GHz or something like that.
Because you get sharp beam
RF, Microwave, Antennas and Optics :: 08-13-2007 01:40 :: Abhishekabs :: Replies: 6 :: Views: 1986
There is a book on this topic written ten years ago. They suggest:
thick air dielectric below the p-atch
one p-atch spaced in front of the bottom p-atch, each with slightly different dimensions
slot feed from below the ground plane
enlarged areas on the end of the slot
They could get 10-20% bandwidth with these methods. (...)
RF, Microwave, Antennas and Optics :: 09-22-2005 23:48 :: flatulent :: Replies: 6 :: Views: 1220
depending on how much bandwidth you require. Maybe a simple way is to cut a slot right in the midde of the patch.
How can I improve the bandwidth for a square fix antenna? Will it help if I use a perforated ground plane
Electromagnetic Design and Simulation :: 10-08-2003 07:57 :: Element7k :: Replies: 22 :: Views: 16946