Log-periodic antenna 300–6000 MHz — radiation pattern
Anechoic-chamber radiation-pattern measurement of the 300–6000 MHz log-periodic antenna. The larger model in the range: a 500 × 430 mm board working from 300 MHz. The 2D and 3D plots are interactive — rotate and zoom them straight in the browser.
This page carries the measurement of the ARXE 300–6000 MHz log-periodic antenna, the larger model in the range. A 500 × 430 mm board covering 300 MHz to 6 GHz — a twenty-to-one span. The half-metre longest element is exactly what makes 300 MHz possible, where a wavelength runs to a full metre.
The measurement covers that entire range and shows how the pattern behaves at the bottom edge, where the antenna is physically largest relative to the wavelength. The interesting stretch here is 300–500 MHz: it holds 433 MHz ISM, PMR handhelds and the lower DVB-T channels — the reason to take this model over the compact one.
What to look for: whether the main lobe keeps its shape at those low frequencies, and how the side-lobe level behaves there. That is the answer to whether the antenna really works from its stated lower edge rather than merely picking something up on it.
For comparison, we publish a separate report for the 530–6000 MHz log-periodic antenna — the same construction on a board half the area, with a 530 MHz lower edge.
Both plots are interactive: the 2D pattern opens full screen, and the 3D one rotates and zooms straight in the browser, with no separate software.
