A low cross-polarization slot array antenna in the narrow wall of ridge waveguide is presented. A non-angled slot which is created in the narrow wall of the ridge waveguide is considered to be used as radiating resonant slot. The normalized resistance and normalized reactance curves are presented for design purposes. A six element slot array waveguide antenna with ridges on its narrow wall is t...

The Multiple Signal Classification (MUSIC) algorithm is the most popular to estimate Angle of Arrival (AOA) received signals. analysis this with typical array antenna element ( ) shows that there are two false direction indication in planaligned axis array. In paper a suggested modification on system proposed by using perpendiculars crossed dipole spite one antenna. does not affect AOA estimati...

Two types of broad-band antennas are widely used for electromagnetic interference (EMI) measurements in the frequency range from 30 to 1000 MHz. Log-periodic dipole antennas (LPDA) are mainly used for the range above 300 MHz and biconical antennas for the range less than 300 MHz. These two antennas have linear polarization. However, EMI measurements can sometimes be more conveniently made with ...