Apr 17, 2018 · Above is a 3dB 75 Ohm splitter is also a DC-3 (meaning ideal 3db Directional Coupler , but actually 3.5) Depending on mutual coupling impedance, the coupler can be a -3dB tap ( - 0.5dB loss) down to a -50dB tap with low instertion loss. Also they can be equal power taps. This one can split 5kW at one frequency.

Directional coupler from here: - Coupling Loss - Amount of power lost to the coupled port (3) and to the isolated port (4). Assuming a reasonable directivity, the power transferred unintentionally to the isolated port will be negligible compared to that transferred intentionally to coupled port.

May 9, 2011 · It has an input, an output, a coupled port, and a load. It's a device that operates on an input so that two output signals are available, on the output port (larger signal) and the coupled port (smaller signal). However, when the input is applied to the opposite port of a terminated coupler, only one output signal is produced.

Jul 18, 2018 · Oh, and in one place where I had to use a socket I've used tool-less Keystone below. It works flawlessly at 1G for many years now. I guess you can make your own coupler out of two sockets like that one. Or cut the plugs off one end of two 30m cables and replace them with sockets, effectively converting patch cable into extension cable. Note ...

Apr 14, 2024 · For those of us working in an engineering design position, we have to be careful about reviewing ham resources -- they often contain technical errors (like this coupler, arguably), they are often poorly measured (no data at all; sparse data; or data obtained under erroneous assumptions, e.g. antenna gain/pattern depends on unstated feedline ...

Oct 30, 2017 · Maybe I have a misconception about the opto-couplers. But from my experience in dealing with electronic circuits, one of the main reasons for using an opto-coupler is to separate the high-frequency part of the circuit -which does the processing jobs- from its low frequency and power supply part (and I know about the role of capacitors.

Dec 14, 2019 · In the industry, we use 'through power', 'coupled power', and 'isolated power'. I assumed by 'back power' you meant power reflected back to the source. Yes, by all means use coupling+directivity to estimate the isolated or back power. However, in a 3 port coupler with one port internally terminated, it's not possible to measure directly.

Jan 8, 2019 · The directional coupler linked above is matched to a 50ohm characteristic impedance. How do I terminate the isolation port to prevent reflections? Various sources online just say that I should terminate with the characteristic impedance, but is it sufficient to place a short microstrip at the isolated port and then via to a common ground plane?

Jul 17, 2015 · EDIT : i have attached a screenshot of proteus simulation. I actually didnt find the PC817 opto coupler but I got the similar opto coupler. I am getting an output voltage of 3.22. Please tell me that is this connection good. I mean if I make this connection in real, will this work?

Mar 14, 2014 · Opto-coupler base connection speed influence. 0. QRE1113GR Reflective sensor biasing. 0.