Analysis of a Small LOFAR Low-Band Test Array Using a Sky Map, Simulated Embedded Element Patterns and Measured LNA-Impedances

This paper describes the analysis of a nine element test array of inverted V-antennas for the frequency range 20–90 MHz. The array is used as a small radio telescope. The purpose of this test array is to verify a system model using simulated embedded element patterns and measured impedances of the low noise amplifiers in a representative system. The output power of the array is measured over a period of 24 hours. This measurement will be compared with a simulation where the output power due to the sky noise as a function of time is calculated. Results for 35, 55 and 70 MHz showed an agreement between measurements and simulations within 1 dB.