An illustration of a magnifying glass. An illustration of a magnifying glass.

NCERT Book for Class 9 Maths: The latest NCERT Class 9 Mathematics Book for the 2025–26 academic session is now available for download in chapter-wise PDF format, in both English and Hindi medium.

Abstract: This manuscript presents a diplexer design which can operate in 4G and 5G frequency bands. The proposed design is based on coupled line filter with capacitive and inductive coupling has a ...