Figure 4 from Log-periodic antennas of vertical polarization | Semantic Scholar
Log Periodic Antenna
Design of Printed log-Periodic Antennas for Long Range Communication within a Wireless Sensor Network for Sea Water Quality Monitoring | SpringerLink
Figure 1 from Reduced Size Planar Dual-Polarized Log-Periodic Antenna for Bidirectional High Power Transmit and Receive Applications | Semantic Scholar