Questions tagged [coupler]
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23 questions
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Why is the equivalent circuit for the unfolded Lange coupler valid?
In Microwave Engineering by David M. Pozar, Section 7.7 shows an effective capacitance network for the unfolded Lange coupler (Figure 7.40a).
I noticed that the nodes 1 and 3 are shorted, but this ...
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What's the name of this kind of RF SMT package technology?
This directional coupler for example:
Source: https://www.minicircuits.com/WebStore/dashboard.html?model=BDCH-25-33%2B
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Is an RF Directional Coupler with specs between 0.5 GHz and 2 GHz suitable to use with a 0.2 GHz signal?
research scientist here a bit out of my depth in the world of RF electronics.
I'm wondering if a directional coupler with specs 0.5 GHz to 2 GHz will work with input of 0.2 GHz?
I'm using a system in ...
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Connecting branchline couplers
I have a conception on ADS to do about a Wilkinston divider and 3 branchline couplers.
The branchline coupler on ADS was asked to create it with a quadripole and configure his parameters S which I ...
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Does measuring S21 parameter of a directional coupler include measuring S11?
I have a directional coupler RF Lambda.
Port 1: Input
Port 2: Output
Port 3: Forward Coupling
Port 4: Reverse Coupling
Port 5,6: Plugged by 50 ohm
I want to measure S21.
I have a power generator and ...
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Ethernet coupler implementation on PCB - whether to use magnetics (transformer) or not?
I need to implement a sort of coupler on a PCB which has other things running, but without any connection to an Ethernet circuit (see drawing).
One end of this 'coupler' connects (using a suitably ...
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How does this HF 'coupler' work?
I came across this coupler design in this link in another question.
It's designed to be used to couple a small monitoring amount of signal off a 1 kW HF (3 MHz to 30 MHz) signal on a through line.
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Bidirectional Coupler from Directional Couplers
new to RF engineering.
I want to build a wideband bi-directional coupler because commercial ones are quite expensive.
I decided to build one from two wideband directional couplers (SEDC-10-63+).
...
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How can I identify this microwave circuit?
I found this microwave circuit from e-bay but cannot identify what this circuit is doing. I am asking this question since I found the same circuit from the sampling scope that I was tearing down in ...
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90° hybrid coupler (Quarter-wave branch line hybrid)
according to "Foundations for Microwave Engineering" by Robert E. Collin, Lumped Element Quadrature Hybrids" by D. Andrews and several others this is what a Quarter-wave branch line ...
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Coupled line hybrid coupler parameters
I am designing a coupled line hybrid coupler as a part of of term evaluation at my university. So from my conceptual understanding here coupled line hybrid coupler implies a coupled line coupler with ...
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Dual directional coupler schematic?
I am new to microwaves. I am trying to design a dual directional coupler using ADS software, but researching dual directional coupler isn't working; all that's showing is directional couplers and bi-...
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Can a wifi device be inductively coupled to its remote antenna?
I’m developing an electronics device that will be towed underwater and which needs to transmit data to the surface. Since RF works poorly underwater, I’m tying to extend the underwater device’s Wi-...
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DIY USB-C Coupler with two receptacles
I need to create a USB-C coupler that connects two USB-C cables, passes the data from one to another while splitting out the USB 2.0 signal from the incoming USB-C plug to an additional receptacle or ...
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Nonideal RF coupler model, admittance matrix in QUCS simulation
I'm trying to simulate a nonideal directional coupler in QUCS. Unfortunately, the only model available is the ideal one without taking into account the isolation or insertion loss values.
Initially, I ...
