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220 Threads found on Coaxial And Cable
coaxial cable characteristic impedance isn't a resistance and can't be only measured with special instruments. To distinguish between 50 and 75 ohm cables, look at the ratio of center conductor to dielectric diameter. It's around 3 for 50 ohms versus 6 for 75 ohms.
Hello, I have a question about an antenna simulation with CST Studio Suite. I have a Bowtie-Antenna, which is fed by a balun and a coaxial cable. 132366 I want to simulate the reflection coefficient of this antenna with CST with a differential feeding. Now my problem is, that I do not know which way of designing the an
?surely the above thread is incorrect?..SMPS output ripple should best be measured with a x10 scope probe, and not a piece of coaxial cable which will be a 1:1 probe and will overly capacitively load the high frequency bit of the measured value? All that is needed is to remove the ?tail? at the end of
kindly share the method and the related calculation for the amplifiers matching using Co-axial cable and bond wire in case of high power amplifiers at VHF band.
Hi, I have a problem with my simulation in CST where I have a rectangular cavity with a simple SMA opening as a set of coaxial cylinders with dimensions I have checked to make 50 Ohms. I intend to simulate the resonance of EM waves entering the cavity and I calculated the dimensions of the cavity to fit resonance of around 2 GHz, but when simula
Dear members, I am trying to simulate a conical antenna placed on a circular ground having a cut-out for the coaxial feed. The coax contains the Outer Cylinder (PEC), the inner Teflon and the innermost feed pin cylinder (PEC). The structure can be seen below; 128776 Can someone please assist me on how to excite the
If the frequency range is actually up to 36 GHz, the test port connectors of your network analyzer and available calibration sets will prescribe the useable cable connection. In case of doubt some semi-rigid type. You also need to design a coaxial-to-stripline transition.
Hi I'm experimenting with power line communication by connecting 2 modems (Texas Instuments PLC developer's kits) through 100m of RG58 coaxial cable as a model power line and injecting white gaussian noise with a signal generator. The modems exchange modulated packets of data shown in fig 1. I was hoping to see the response of the Bit (...)
Hello, I am farely new to HFSS and can't seem to circle my head around the problem of modeling components. For example let's say I have modeled a coaxial cable in HFSS with a shield and now want to make a component that will in Simplorer appear as black box with 2 inputs (1 input for the core and 1 for (...)
Hi all, suppose I want to make a 1:1 balun using a coaxial cable. So the primary would be the inner conductor, and the secondary, the outer conductor. The question is, how do I determine Zp0e and Z0o or the coupling coefficient based on the cable data? Is there a back-of-the-envelope calculation? (...)
Good Morning, I am facing an issue. I have modeled a coaxial cable and modeled as well one rectangular mirror or reflector inside the cable such that we can see dips in S(1.1) vs Freq. but the problem is after having first dip at 13 GHz, then the graph is distorting heavily and looks more like noise. Can (...)
Hello every one, I have a question regarding bidirectional transmission with RF and power in a coaxial cable. Is it possible to pass a RF signal from one end and a DC voltage from another end of a coaxial cable. I gone through the older posts before posting this question. Those responses (...)
Google broken? E.g.
Reminds me of the adapters that come with a Universal Laptop charger coaxial plugs with a multi-wire interface. One of the wires to the SMPS charger was voltage sense and Gnd sense to regulate voltage at point of entry for loss in the wires.(remote sense) I modified the cable so I could adjust the output of the 19.2V 65W supply with pot, (...)
Hi Lacrimosa, Look up the drawings for the connector you're going to use, and create the connector in HFSS. Then just excite the coaxial mode on the coax end of the connector.
I have a portable lithium ion battery pack that powers a LED headlight. It uses this cable. The headlight came with 4 cables, however 2 of them have already died, giving only a few months of use each. I know someone else who has gone through all 4 cables already. I am awaiting a response from the compa
Hi, I am new here, so this may not be the right section to post this. If so, please forgive my mistake. I am confused about the purpose of the coaxial cable connectors. What part do they play electrically? Does it act as a ground to the male pin? By connector, I mean the metal housing around the pin. I have only one coaxial (...)
Hello. I am working a project with CST cable Studio for my university. I am new in the CST software and I would like to know how can I change the way the H-field is displayed. I would appreciate your help :)! I have this: 117879 and I would like to have a display like: 117878
I was watching videos about AM and FM on YouTube. I saw a video and can't find it now. In that video was a block diagram-like circuit. It was a physical, actual block circuit. All the blocks like LPF, VCO,BPF etc were built in little metal boxes and these boxes were connected to each other with a coaxial (...)
Hello everyone, I am trying to design a Microstrip Patch Antenna using HFSS and I need help regarding dimensions of coaxial cable to implement in HFSS. Can you tell me what are the standard connectors available in the market? I am from India and I have heard that not many connectors are available here. (...)