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Is there a way to design a flat bowtie antenna from 100MHz to 1GHz? When I design using CST, I can't cover the whole bandwidth no matter how big i make the antenna. The only way it covers more badwidth is if I go up in frequency. I'm just asking if it's possible.
I can probably buy a bicone...
I built a CP antenna and would like to find the gain of it. I have a 2 linearly polarized horn antennas, which have known gain.
My technique in an anechoic chamber:
The horn is placed 35 inches above the CP antenna; the CP antenna is spun 360 degrees; the power received is captured for every...
Hi,
I have the following 3 antennas:
Tunable dipole: tuned to 375MHz for my measuements with known Gain
Broadband Dipole: 200-500MHz unknown Gain
UHF antenna: 240-380MHZ unknown Gain
I put the antennas 'Broadband Dipole' and 'UHF antenna' in an anechoic chamber 3 meters from each other. I...
Hi,
I have the following 2 antennas:
Tunable dipole: tuned to 375MHz for my measuements
Broadband Dipole: 200-500MHz
I put the antennas in an anechoic chamber 3 meters from each other. First, I oriented both dipoles vertically and receiver -35dB in power on the network analyzer at 375MHz...
I am new to 4NEC2 simulating software and am trying to create a 30-512MHz discone antenna.
First, is it possible to create a discone with such a large bandwith?
Second, I have designed a discone, but it only works from 120-512MHz with a 3:1 VSWR. I have tried to use the online calculator to...
I am trying to build a discone and a bicone antenna using 4nec2 simulating software. I tried to read several different books on the subject, but am still confused. How do you know how many cone and disc elements you need and what sizes they should be? How does the angles and sizes affect the...
I receive the following errors and I don't know what they mean. I am currently working with 512MHz, but I also want to complete frequency sweep of 30 - 512 MHz
Warn.: Wire 17 (tag 18), seg-len ( (0.109) ) above wlen/10 (0.059)
Error: Wire 18 (tag 19), seg-len ( (0.361) ) above wlen/5 (0.117)...
I created a dipole antenna in CST and built it by hand using componants in my lab. The problem is that when I use the network analyzer to measure the impedance and VSWR, the results are not the same as the simulation.
I can create a matching circuit using ADS or change the measurements of the...
Hi,
I used a anechoic chamber to rotate a transmitting antenna from 0 to 360 with 2 degrees in between. I received gain at every two degrees for my antenna. For example at 2 deg I received -64dB and so on for each degree. I am able to view the radiation pattern on the analyzer, but I want to...
I have created two circular polarized antennas and was wondering how I can measure the Axial Ratio using the network analyzer? I have already modeled it in CST, but I need to record real-time data I know how to measure it if I have a linear polarized antenna. I just change the orientation 90...
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