This paper proposes a BPSK modulator using a branchline coupler and phase shifter at 2 GHz. BPSK modulator designed is compact and provides an excellent 3dB coupling and there is a 180 degree phase difference between the output signals as desired for a BPSK modulation technique. © Research India Publications.
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B. S. Lekshmy, Lalu, G., Narayanan, G., and Menon, S. K., “Branchline coupler based BPSK modulator”, International Journal of Applied Engineering Research, vol. 10, pp. 1032-1034, 2015.