Research Blog

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• My research lies in the field of beamforming for mmWave Communications.

• Early spatial filters were designed to form pencil beams in order to receive signal from a specific location and attenuate signals from other directions.

• Beamforming or spatial filtering is a signal processing technique used in sensor arrays for directional signal transmission or reception.

• Now let us consider a Uniform Linear Array

Radiation Pattern by tweaking number of Antennas

• From the above graph, we can see that Antenna gain proportional to number of antennas. More the number of antennas, more the beamforming gain and less Half Power Band Width(HPBW).

Radition Pattern by tweaking d/lamda

• From the above graph, we can see the ratio of 0.5 yields only one main lobe. Ratio of >0.5 creates significant side lobes resulting in power leakage in not desirable directions.

Additional Resources

Slides on Basic Beamforming

Code for above animation