TEM Horn Antenna Loaded With Absorbing Material for GPR Applications

A novel exponentially tapered TEM horn antenna is presented. It is fed directly by a coax through a compact transition section and possesses a wide bandwidth, good radiation characteristic, and easy integration with microwave circuits. Two specially tapered metal flares have been designed to make a...

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Published in:IEEE antennas and wireless propagation letters 2014, Vol.13, p.523-527
Main Authors: Shao, Jinjin, Fang, Guangyou, Fan, Jingjing, Ji, YiCai, Yin, Hejun
Format: Article
Language:English
Subjects:
Absorption
Antenna measurements
Antennas
Apertures
Bandwidth
Flares
Frequency measurement
Ground penetrating radar
Horn antennas
loading
Microwave antennas
Reflection
TEM horn
Transmission electron microscopy
VSWR
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container_title IEEE antennas and wireless propagation letters
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creator Shao, Jinjin
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Ji, YiCai
Yin, Hejun
description A novel exponentially tapered TEM horn antenna is presented. It is fed directly by a coax through a compact transition section and possesses a wide bandwidth, good radiation characteristic, and easy integration with microwave circuits. Two specially tapered metal flares have been designed to make a wideband characteristic and reduce the reflection. To overcome aperture reflections at low frequencies and unbalanced aperture field at higher frequencies, an arc surface is added at the end of the flare plates, and an absorbing material is loaded on the outer surface of the flare section. Measured results show that the presented antenna has a wide bandwidth from 0.83 to more than 12.8 GHz under a return loss
doi_str_mv 10.1109/LAWP.2014.2311436
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source IEEE Electronic Library (IEL) Journals
subjects Absorption
Antenna measurements
Antennas
Apertures
Bandwidth
Flares
Frequency measurement
Ground penetrating radar
Horn antennas
loading
Microwave antennas
Reflection
TEM horn
Transmission electron microscopy
VSWR
title TEM Horn Antenna Loaded With Absorbing Material for GPR Applications
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