L-Band is a very popular band operating from 1 GHz to 2 GHz. The wavelength of a 2GHz signal is only 15cm, so small antennas can be very efficient.

Chelton has a wide range of L-Band antennas for a variety of applications including military and commercial usage. L-Band antennas are small and compact and are typically blade shaped.

Chelton are world leaders in conformal antenna design, where the antennas are flush and conform to the shape of the platform, reducing drag and radar cross sectional area, and making antennas far more difficult to damage on the ground. Chelton manufacture conformal L-Band Antennas for the KAI KF-21 platform.

https://www.chelton.com/our-capabilities/antennas/communication-antennas/l-band/