100-LOG-750 - 100MHz to 750MHz Log Periodic Array (LPDA)

The antenna is a 50Ω direct fed directional wide band beam antenna for receiving and transmitting purposes. This antenna can be mounted vertically or horizontally and can handle up to 1KW of transmitted power.

It uses a twin-boom arrangement as a feed line as well as a dipole support. the feedlines are tapered in spacing to remove impedance spikes across its very wide bandwidth. 13mm diameter elements are used to ensure maximum gain and bandwidth is achieved along with Front to Back ratio (F/B) and a specially designed 3 element parasitic element cell has been placed in the feedline in front of the antenna to enhance top end performance.

Often, LPDA's are designed with a 200Ω feed point which ensures bandwidth. However, this results in the need for a 4:1 transforming balun which both reduces efficiency and limits any input power too. The 100-LOG-750 has been computer optimised to present a 50Ω feed point to allow for direct connection to coax cable and thus, power limitations are largely removed.

Specification

• Typical Gain: 7.5dBi
• Peak Gain: 9.7dBi - @ 750MHz
• Typical F/B: 20dB+
• Input Power (max): 1Kw
• Boom Length: 1290mm
• Weight: 1.4Kilos
• Wind Survival: 150MPH+li>