Dear Aspirant,

The best colleges to do MTECH in ECE are

• IIT-BOMBAY
• IISc-BANGALORE
• IIT-DELHI
• IIT-ROORKEE
• IIT-KGP
• IIT-KANPUR
• IIT-MADRAS
• NIT-TRICHY
• NIT-WARANGAL

The ECE in itself is a very good branch and if you make it to any of these colleges you'll be getting a very good job. I would also suggest that you should also learn to code, if you don't already. It will help you a lot in terms of placements, maybe even double your package.

Admission into these colleges is through GATE

https://engineering.careers360.com/articles/gate

Hope this helps. Thank you.