Investigations of RL-Loaded Bowtie Antenna for Low-Resolution GPR
- Resource Type
- Conference
- Authors
- Zou, Aimin; Li, Jicai; Wang, Keke; Cheng, Defu
- Source
- 2009 5th International Conference on Wireless Communications, Networking and Mobile Computing Wireless Communications, Networking and Mobile Computing, 2009. WiCom '09. 5th International Conference on. :1-3 Sep, 2009
- Subject
- Communication, Networking and Broadcast Technologies
Computing and Processing
Ground penetrating radar
Loaded antennas
Transmitting antennas
Radar antennas
Antenna theory
Gaussian processes
Frequency
Ultra wideband technology
Ultra wideband antennas
Geology
- Language
- ISSN
- 2161-9646
2161-9654
A resistively-inductively loaded (RL-loaded) bowtie antenna for impulse ground penetrating radar (GPR) is theoretically and experimentally investigated. The antenna has been designed for transmission of Gaussian-like pulses with duration of 6 ns (100 MHz central frequency). As ultra-wideband (UWB) antenna, it is suitable for low-resolution GPR that can be used in tunnel geology forecast. The simulating results and the Smith chart created by the network analyzer are analysed. We implement lumped resistor-inductance loading (RL-loading) to the antenna. Experimental results show that VSWR of the loaded antenna is less than 2.5 in the band 0-300 MHz while the transmission efficiency keeps unchanged basically after loading. The RL-loading raised in this paper makes the narrow pulse generator and the antenna-feed system get matched. Time-domain waveforms and radiation pattern of the antenna are shown in this paper.