Apr 17, 2018 · To start with, I've had difficulty finding a good, simple explanation of what directional coupling is. I read through Radio Electronics, but the section on directional couplers doesn't give an …

Apr 14, 2024 · 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 …

Jul 2, 2023 · UART isolation with opto-coupler Ask Question Asked 2 years, 7 months ago Modified 8 months ago

Aug 26, 2023 · If a directional coupler is labeled 5-1002 Mhz, what happens to frequencies above that? Is that just the rated frequencies but above that may work fine, or does that mean it blocks everything …

Jan 31, 2017 · A bus coupler is just a normal circuit breaker (and isolators), no matter where it's installed, or which busses it's connecting. A "cross bus coupler" is just a bus coupler that happens to …

Oct 24, 2024 · 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.

Apr 13, 2025 · As I understand the optocoupler current transfer ratio, CTR is like the hfe of a transistor. I can't understand if the CTR is or isn't a critical value and for what applications is it used in. CTR＝...

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 …

Feb 9, 2025 · As long as the opto-coupler doesn't introduce a huge phase shift, causing feedback to get precariously close to becoming positive, or isn't asked to produce output current or voltage beyond …

Jul 18, 2024 · Below is a simple 4N25 optocoupler circuit that I designed in LTspice. 10 mA is flowing through the input. It works in saturation. According to the datasheet in Figure 2 (CTR-sat), it says 0.7, …