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18 Threads found on edaboard.com: Loss And Combiner
hi 7.5W is not more but you have gotten less. you got to figure out why you getting less. power combiner will give you 3dB gain and power splitter will give you 3dB loss. but combining arms (1 & 2) and spliting arm (3) are different and you have to be of this when you inject the input signal. 5watt --> (...)
Two Baluns and a power combiner/duplexer will solve your problem. If the frequencies are different, a Diplexer can also be used. 2.4GHz 2x2cm PCB with on board IC (diff. tx and rx ports) possible lowest BOM required low insertion loss required, but RF switcher too expensive,Wilkinson divider too big(possibly),
But there is a 3 loss: 3dB for 2x1 splitters/combiners, and 6 dB for 4x1 splitters/combiners, etc. You're right, thank you for hinting me :-) 217.34.103.131/pdfs/JS4PS-1W.pdf Any lossy device adds the noise figure that equals to its loss in dB. But beware: as the other coupler or (...)
The following picture describes the relationship of combiner loss and Zopt, I can't understand why. Can you help me:grin: 94867
Cascaded is not fit for this. Use some combiner, such 2-port ferrite combiner, take care of its max rating power, and calculate the loss. Maybe you can only have 4600W maximumally.
These two types of combiner are very different things and must not be confused: - devices that combine signals at different frequency bands without power loss (ideally) - splitters/combiners like Wilkinson, 180? hybrids or 90? hybrids In all cases superposition applies (they are linear). In the (...)
It should work as a loss-less combiner as long as Ports 2 and 3 are fed in phase. At Port 2, there is reflection due to non-zero S22. But you also have coupling from Port 3 because of non-zero S23. Since they are 180-deg out of phase, they are canceled, creating virtual short. At Port 1, you should see a sum of voltages that came from (...)
Use a combiner and take into consideration the added insertion loss.
Its easier to get millions of bucks instead of a no-loss passive power combiner.
Hi, I'm working in a project of a high-power combiner at HFSS. The ports are exitated by powers and a I made the simulation in "Driven Terminal" But, when I try to Edit Source (to set the excitations, I need to set 2 ports of 25kW) I need to set the excitation in Volts. It's right? I'd like to set in Watts, in power! and I'd (...)
If you connect antenna to the splitter you will have two antenna connectors at the splitter's outputs anyway. Design of Wilkinson or any other splitter/combiner will depends on your requirements. What is the frequencies for each signals? Please keep in mind that splitter will have at least 3.5 dB of loss and you need to terminate unused (...)
Hi, I'm working in a project of a high-power combiner at HFSS. The ports are exitated by powers and a I made the simulation in "Driven Terminal" But, when I try to Edit Source (to set the excitations, I need to set 2 ports of 25kW) I need to set the excitation in Volts. It's right? I'd like to set in Watts, in power! and I'd (...)
13 dBm, actually there will be a little loss so maybe 12.5 dBm. Assuming equal power and phase inputs.
Each arm of the Wilkinson splitter/combiner has the impedance Z = Zo*1.41, where Zo is the impedance of the ports (e.g. for Zo=50 ohms result Z = 70.7 ohms). The isolator connected to the output ports guaranties a perfect 50 ohms, and in this way keeping the designed performances of the splitter/combiner (insertion loss (...)
Does this have to be minimum loss and high isolation? Otherwise a star of 17 ohm resistors will work. Each one connected to an external port.
It is possible to combine two or more fm transmitters without using absorber. Each transmitter is connected to bandpass filter (50ohm-50ohm BW aprox. 300kHz) and outputs are joined to output connector. Cables from filter to star point are different lengths to compensate each other regarding return loss. Frequency spacing is aprox. 1.2MHz (...)
For your power combiner, this is a special case where the signals coming in to ports 2 and 3 have a special amplitude and phase relationship that allows all of the power to go to the port 1. Therefore the S22 and S33 return loss values are much better and the receiving efficiency is the (...)
Any one have a schematic for an active low loss circuit to combine 2-3 UHF aerials and signals.