Design of Low Frequency Meander Line Antenna with Efficient Size Reduction

In this paper a new 140 MHz miniaturized monopole antenna is introduced. This antenna is suitable for several low frequency electromagnetic surveying systems. The design is based on Meander Line with overall foot print of 29.3 cm x 6.45 cm. It acquires length reduction of 46% compared to traditional monopole operating at 140MHz. It also introduces 13 MHz enhanced bandwidth. The proposed design also exhibits omnidirectional characteristics with radiation efficiency of 80.2% and directivity of 1.68 dBi. The proposed configuration has been fabricated and measured, where sub 200 MHz operation is confirmed from both simulation and measurements.