From d9360c6688d1feac9a3c078092b11d3113171600 Mon Sep 17 00:00:00 2001 From: Jojeee Date: Wed, 3 Aug 2022 12:59:36 +0100 Subject: [PATCH] Added README.md --- README.md | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) create mode 100644 README.md diff --git a/README.md b/README.md new file mode 100644 index 0000000..584321e --- /dev/null +++ b/README.md @@ -0,0 +1,16 @@ +# What even is this? +* It is a small board that will help measure the phase offset between a reference signal and 1/4 inputs. +* A quick and dirty way of knowing if the two measured signals are in/out of phase was needed. The resistor combiner allows a device to measure either a null or max output power depending on the inputs' destructive/constructive interference. + +# What does this mean? +* Absolute phase offsets are not easily obtainable using this method +* The phase of each input can be tuned until the output reaches a minimum/maximum output, this indicates 180/0 phase difference respectively +* Due to issues with dynamic range, the null points (180 degree destructive intfer.) are easier to measure + +# Why did I make it? +* This board is to prove out a relatively novel way of phase matching a large number of HackRF SDRs, for use in phased antenna arrays +* The board will hopefully prove the technique's ability to work with 4 units and from there it can be scaled up ~40/50 element arrays (each element powered by a separate radio) + + + +