Questions tagged [power-divider]
18 questions
4
votes
2 answers
How does a Wilkinson power divider achieve isolation?
Say we have a Wilkinson power divider:
The explanation I've heard about how ports 2 and 3 are isolated is this: say there's a signal generator attached to port 2. This can take two paths to port 3: through the resistor, and through the two…
Phil Frost
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4
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2 answers
What happens to port isolation in a Wilkinson power divider when source impedance isn't matched?
Say we have a Wilkinson power divider:
So far as I understand it, if we say port 1 is the input, and the other ports are outputs, then the power is split evenly between the outputs.
If one of the outputs is not perfectly matched, and so reflects…
Phil Frost
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3
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1 answer
design a 90 degree hybrid coupler 2-8GHZ
I designed a 90 degree hybrid coupler in hfss, in 5~6 GHZ.
S₁₁ & phase difference are okay, but S₂₁ & S₃₁ don't match.
What change should I make in the form to improve matching between S₂₁ & S₃₁?
Ali.kavari76
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2
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1 answer
ADS Wilkinson Power Divider
I finished the schematic for my 2.4GHz microstrip Wilkinson power divider. I am moving to the layout and trying to do the EM simulation, but I cannot figure out how to put a lumped element in the layout design. This is the error I am getting:
If…
user267451
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1
vote
0 answers
Microstrip structures identification
I'm currently starting with learning how microstrip structures work.
Just for clarification: I'm talking about these here: Microstrips
In Power dividers and directional couplers, some basic structures are already shown.
What I am looking for are…
Justin Time
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1
vote
2 answers
Microstrip Wilkinson Power Divider
I am trying to design a microstrip Wilkinson power divider in ADS for 2.4GHz. My schematic is shown below:
The calculations all check out but I am not getting the best RL at 2.4GHz:
If anyone could help figure out what is going on that would be…
user267451
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1
vote
2 answers
How is Wilkinson power divider lossy?
In an ideal Wilkinson power divider(because in practical there will always be resistive loss), the scattering parameters, or S matrix is given as:
From the condition that checks if network is loss-less or not which is:
Say s-parameters matrix is…
Prasanjit Rath
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PCB Power Divider Tee for RS 485
For a RS-485 Communication using a Maxim MAX3292 Driver, Full Duplex, 1/4 load unit (54 \$\Omega\$), 5 Mbps, with UTP 120 \$\Omega\$, standard cable, for each receiving unit I am thinking on a design placing two (equal) connectors, and making a tee…
Brethlosze
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40 GHz 1-to-4 power divider and middle amplifier strategy
I have a surface mount amplifiers working at 40 GHz with 7 GHz bandwidth.
I need to create a 1-to-4 power divider and put my amplifier in between and then combine the amplified signal back.
the problem is that the frequency is so large that if I try…
lub2354
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0
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1 answer
Power Distribution
I work on a project that need a power distribution method. I thought some schematic bellow that you can see. I don't try that connections because I am not sure. If anyone can warn me about my mistakes I will really gratefull for…
TA2ERR
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0
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1 answer
Choosing between diplexer and resistive power divider
I want to use a passive device to apply a 1V and 1MHz signal in a transmission line, While I am sweeping the frequency from 300kHz to 6GHz by Vector Network Analyzer (VNA) in that transmission line too.
I am new in RF field, and I tried the bias tee…
Ferrofluid
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Dual-band planar power dividers with center frequency ratio 3
I am trying to recreate the results of the paper published in IEEE Transactions on Microwave Theory and Techniques.
In that paper, it is said that for a pure resistor the frequency ratio is 3 i.e. \$f_1\$ and \$f_2 = hf_1\$, \$f_1\$ is the centre…
0
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Power supply circuit for two devices
I need to split the power from an AC/DC converter to two devices. The converter I have takes an AC input of 100 to 240V and outputs 48VDC and 30W power. I have one device that needs 48V and 30W and another that needs between 3 and 5V and can't…
ceej pie
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0
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2 answers
Two 10ampere switch instead of one 16 ampere
I want to use two 10 ampere switchs for my 16amp appliance.What I will do is divide the input wire of the appliance into two,pass it from two individual 10 ampere switch and then recombine them and pass it to appliance input.Can this thing work.Do…
saransh
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Output from a system of cascade connection with Wilkinson's divider and Quadrature hybrid
So I have this system, with
\$f=3GHz\$
\$b = \frac{λ}{4}\$
\$a = 0
Grak
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