You need to be of the same branch that is you need to pursue 3 years course diploma in ECE only to get into Btech course for 3 years graduation program in ECE field. You need to pass the diploma exam with good percentage to get a seat in decent university.

Refer to the site below to know more about this field and the future career opportunities..

https://www.careers360.com/courses/b-tech-in-electronics-and-communication-engineering Best wishes. Thankyou.