BPSK Explained | Binary Phase Shift Keying in Electronics Made Simple

What is BPSK? BPSK is a digital modulation technique, which means it is used to transmit digital data — like 0s and 1s — using analog signals. In BPSK, we change the phase of a carrier wave to represent binary data: A bit 1 is transmitted by sending a carrier wave with 0° phase. A bit 0 is transmitted by sending the same carrier wave but with a 180° phase shift. So, basically, the phase of the wave flips depending on whether the bit is 1 or 0. --- 📶 BPSK Waveform Example: Let’s say we have this data: 1 0 1 1 0. Using BPSK: The first 1 → send the carrier as it is (0° phase). The next 0 → flip the phase (180°). The next 1 → back to 0° phase. And so on… This phase shift is how the receiver knows what data is being sent.