Search Engine

Microstrip Sma

Add Question

44 Threads found on Microstrip Sma
Hi! I am currently designing a dielectric resonator oscillator (DRO) with a fixed 4GHz frequency. I acquired some dielectric resonators and fashioned a cca. 50ohm microstrip line with 2 sma connectors on its ends. I plugged the connectors into a vector network analyzer and placed a dielectric resonator cylinder next to the line, but however I mo
Apart from being dedicated to much smaller signal traces, the connector in post #1 is for coplanar rather than microstrip transmission lines. You won't be able to connect the ground appropriately with this connector type.
How to fix this design rule problem in Altium. Why I have problems while connecting signal pin to microstrip. And should i send ground pin footprint on bottom layer. Any Suggestions? attached is a picture. Sorry for such a basic Question. 122222
Hello everyone, I am developing a double side pcb. one side is ground and other side is microstrip circuitary to feed the antenna. I need to design the footprints of the connector. i don't understand connectors at all. the throughhole connector got all four pins equal in length. i thought middle pin should be smaller than others or vice versa (how
What do you think I am missing on simulation? Difficult to say without seeing the results. It could be tolerances in dimensions (etching precision) or the transition from coax to microstrip. Also, for these coupled structures the simulation mesh density (especially at the edges) matters.
I have few questions regarding coaxial connector and coaxial feed design. 1. What type coaxial connector should be used for microstrip patch when it is fed by probe feed . Can we use normal sma connector or any special sma connector available. 2. When designing coaxial feed in simulator (CST or HFSS) what should be the length of the (...)
1) yes. 2) i'm not familiar with cadence, but you can draw it in HFSS. 3) for microstrip no vias needed. if stripline, then you should have vias connecting top and bottom ground planes 4) return path should be solid ground plane on bottom layer if possible. 5) I'm not sure on internal layer thicknesses, but silicon chips can be as small as 2 m
I am modelling a microstrip resonant antenna and need to feed it with coax cable through the substrate in the middle. I have 2 questions: 1)Can you guess some sma compatible realistic 50 Ohm cable parameters? a)Signal conductor (inner) diameter "ID" b)Insulator (outer) diameter "OD" c)Insulator dielectric permittivity and loss tan. It appear
Exactly, you're totally right! At 300MHz the sma to microstrip interface shouldn't be a problem. I expect you have the sma soldered directly on the PCB, without any wires? Even the 0805 pads shouldn't make any difference at this low frequency. 10pF is huge. Why don't you post a photo of your circuit?
Hi. I has designed a microstrip patch antenna array in hfss.It's feed is an coaxial sma.But in simulation the wave is not going throw the array.The inner in coax is tangent with the array and it's shield is tangent with the ground plate
Hi Mohamed, There are some tutorials for microstrip antenna modeling on CST on youtube, check the below links: Let me know if that's what you're looking for. Good luck!!
I need to measure the inductance of my microstrip PCB from 1 to 100MHz. It is already designed and matched to have a 50 ohm characteristic impedance and has sma connectors on it. Is the the reactance (imaginary reading) from the Smith chart plot across this band from a vector network analyzer the same as what I would measure from an LCR meter (such
Hi all I want to test an antenna cpw fed microstrip antenna substrate heigth is 1.6mm what must be specification of 50 Ohm sma connector and from where i can purchase it image of antenna and connector is : regards kartik
Can you be a little more specific about your project? What are you simulating? If it planar (microstrip for example) the rules for defining size of waveguide port exist (depend on substrate height & microstrip width). Additonally for planar projects i usually simulate sma connectors to connect to lines (after it i added waveguide port to (...)
Hello, Is it possible to get an extracted mathematical model of an sma connector? I have a S2P file which contains measured microstrip line. My idea is to transform this S2P matrix into an ABCD(Transmission) matrix. I'll get a simple equation: ABCD_{measurement}=ABCD_{connector}*ABCD_{microstripFromADS}*ABCD_{connector}
It is not clear why you don't have any thru (Trl) in your cal kit, but only a line (trL) and a reflect (tRl). If you're thinking to do the thru connecting directly the port1 cable sma(M) with port2 cable sma(F), I think you're doing a mistake. In fact the TRL should have the same coax to microstrip transition in all the standards, also in (...)
hi, can any one help me how to design the coaxial feed for Rectangular patch antenna using CST..i tried but still i cant get the result...i used to get the port by choosing 2cylinders radius 4 and 1.12 plz can any help me out through this
Hi, I'm doing a project microstrip antenna using the simulator FEKO, and I would like to find a model of sma PCB valid and consistent for simulations that can be used, is there anyone who can help me in finding the actual CAD values ​​of loss tangent and conductivity of the conductor to be used? Thank
Dear frends, I am stucked with my result of the design I am preparing an antenna which is 4 Arm microstrip Spiral Antenna with 4 sma feeds at 50 Ohms but since the impedance of antenna as theory says is not equivalent to 50 Ohms So i renormalize it to 300 Ohms Can you please check my design and let me know if there is any problem with my design
Hi, I have a less complicated problem. I would like to feed a 50Ohm microstrip using a sma through hole connector from underneath the ground plane. I did a simulation for it using hfss. It happen that it isn't a good way to do. The return loss is getting worst at higher frequency. I am wondering why. Thanks [SIZ