LANT05381 2-6G Planar Spiral Antenna

Here is a description of the Leader-mw  ANT05381 2-6G Planar Spiral Antenna:

The ANT05381 is a high-performance, passive planar spiral antenna designed to operate across a broad frequency range of 2 to 6 GHz. Its core design features a printed spiral radiating element on a low-loss substrate, resulting in a compact, lightweight, and rugged form factor ideal for demanding field and laboratory environments.

This antenna is specifically engineered for integration with test and monitoring receivers, serving as a critical tool for advanced RF analysis. Its ultra-wideband characteristics make it exceptionally versatile for applications such as precise field strength measurements, where it can accurately capture signal amplitude over its entire bandwidth. Furthermore, the spiral antenna is inherently well-suited for direction-finding (DF) systems. Its consistent phase center and radiation pattern allow it to be used in arrays to determine the incident direction of signals through techniques like amplitude comparison.

A key advantage of its spiral geometry is its natural response to signal polarization. It is capable of receiving signals of any linear polarization and is inherently circularly polarized, making it an excellent sensor for analyzing the polarization of unknown signals, a crucial factor in modern electronic warfare (EW) and signals intelligence (SIGINT) applications.