![cantenna calculator paper cantenna calculator paper](http://www.blackcatsystems.com/pics/rftoolbox/windows/yagi_antenna.png)
- #Cantenna calculator paper how to
- #Cantenna calculator paper Patch
- #Cantenna calculator paper simulator
Click the right arrow – it will calculate the width and length to the line.
![cantenna calculator paper cantenna calculator paper](https://file.scirp.org/Html/8-6801111/8fb5efb0-f07a-47cd-bdcd-c1c4c32c0187.jpg)
Note that the Height and Thickness are set on the right side, even though we are calculating from left to right in this example. These are obtained from the PCB stackup we are using in the workshop. Also set Dielectric Constant=4.5, Conductor=Copper, Height=1.53 mm, Thickness=30um. To find a transmission line from electrical length, insert all of the the parameters on the left. The picture shows a transmission line with a 50 Ohm impedance and an electrical length of 90 degrees at 950 MHz. The following screen shot show the calculator interface. It is a calculator to help you convert electrical parameters such as electrical length and impedance to a physical implementation. You can find the length of a /4 line using the TXLINE. One of the simplest methods for impedance matching is to use a /4 t-line impedance transformer. The impedance should look similar to the plot below.
#Cantenna calculator paper Patch
Also, use 0.1 GHz as your increment, then refine until you can find a smooth curve, with a clear peak. At resonance (radiating frequency) the input should be real, and typically much higher than 50 Ohm – this is due to the patch structure, not antennas in general, however the real input impedance at resonance is a general property. You may need to sweep a wide range if your shape is far off. Select a start and stop frequency to sweep over and the increment, then hit Apply. You will need to set the frequencies at which to simulate: Options->Project Options. To measure the resonance, Project-> Add Graph and then add measurement Linear->Zin. With the feedport added you can now run a simulation. The port can be added by selecting Edge Port (see below) and adding it to the lower edge of the small feed rectangle you created. Below is an example.īelow is a zoomed view of the small feed rectangle and the attached port.
![cantenna calculator paper cantenna calculator paper](https://s3.manualzz.com/store/data/030032969_1-d29c1da949d72680120b7892719e2450.png)
1mm and place it at the center of the patch where the feedline would go. To better approximate a real t-line port, draw a very small rectangle, 2.3mmx. If you just added a port to one side of the patch, AWR/NI would stimulate the entire edge.
#Cantenna calculator paper simulator
Once you have sized your patch, you need to add a port so the simulator can send in a stimulating wave. Note that this is a delta and not an absolute size. While dragging if you hit the space bar, a window will come up that allows you to type in the dx and dy of the new rectangle. You can simply grab and drag with the mouse. To resize, you can double click the rectangle and you will see blue dots appear at the corners. Resize the patch to be the dimension you calculated above. The file has loaded the default enclosure (surrounding space) and many of the fabrication properties. This includes a small rectangular patch of copper. Load the example AWR/NI file on the workshop site ( click here).
#Cantenna calculator paper how to
You will need to try adjustments in the simulation to get a feel for how to optimize your design for 950 MHz. To provide some intuition, the length of the patch is similar to a quarter wavelength transmission line. The input impedance can be calculated analytically, however we will find it using AWR/NI EM simulator. Dielectric constant is 4.5 and thickness is 1.53 mm. You can use this online calculator to find the approximate values.