Calculation of leakage through apertures on coaxial cable braided screens

Çolak, Bektaş; Cerezci, O.; Demir, Zafer; Yazici, Mustafa Volkan; Turetken, Bahattin; Araz, İ.

doi:10.1109/mmet.2002.1106968

Cited by 4 publications

(3 citation statements)

References 1 publication

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“…Their outer conductors are composed of diamondshaped apertures woven with metal wires, which present a sparse network structure. The detection signal can be radiated or absorbed by these apertures, forming a stable electromagnetic field for monitoring intruders between two LCXs [26]. Unlike the radiation LCX commonly used in existing LCX-based sensors, the sparsely braided LCX is a typical coupled LCX, which possesses a wider working bandwidth.…”

Section: Measure Principlementioning

confidence: 99%

A LCX-Based Intrusion-Detection Sensor Using a Broadband Noise Signal

Xie

Zhang

et al. 2019

IEEE Access

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An intrusion detection sensor system based on a broadband noise signal and two leaky coaxial cables (LCXs) is proposed and experimentally demonstrated. In the proposed sensor, the broadband noise signal is generated by our designed white noise generator used as the detection signal. The detection signal is transmitted and received by two parallel LCXs, forming an invisible electromagnetic monitoring field around the protected area. The intrusion distance along the LCXs can be accurately extracted by the correlation method and the difference between pre-and post-intrusion correlation curves. Experimental results demonstrate the proposed sensor can monitor the intrusion process and locate multiple intruders. The range resolution of 30 cm and the dynamic range of 30 dB can be achieved. Furthermore, the proposed sensor has the strong anti-radio frequency interference (anti-RFI) capability, which makes it very suitable in the complex RF environment. INDEX TERMS Intrusion detection sensor, noise signal, leaky coaxial cable (LCX).

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Section: Measure Principlementioning

confidence: 99%

A LCX-Based Intrusion-Detection Sensor Using a Broadband Noise Signal

Xie

Zhang

et al. 2019

IEEE Access

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“…The proposed intrusion detection sensor uses the LCXs as the antennas to transmit and receive the wideband chaotic signal. The LCX used in our sensor is a sparsely braided LCX [39], which is a typical coupling LCX. The outer conductor of this LCX is generally made up of metal wires woven into many diamond-shaped holes, showing a sparse network.…”

Section: Measure Principlementioning

confidence: 99%

A High-Resolution Leaky Coaxial Cable Sensor Using a Wideband Chaotic Signal

Qiao

Zhang

et al. 2018

Sensors

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A high-resolution leaky coaxial cable (LCX) sensor for perimeter intrusion detection is proposed and experimentally demonstrated. In our proposed sensor system, a wideband Boolean-chaos signal is used as the probe signal, and a pair of leaky coaxial cables (LCXs) is applied for transmitting the probe signal and receiving the echo signal, respectively. By correlating the chaotic echo signal with its delayed duplicate and comparing the correlation traces before and after intrusion, the intruder can be accurately located. Experimental results demonstrate the proposed sensor can simultaneously detect multiple intruders. The range resolution reaches 30 cm, whilst the dynamic range can achieve 50 dB. In addition, this sensor possesses the excellent anti-interference performance to the noise and uncorrelated chaotic signal, which makes it show robust performance in the detection environment with noise or multiple chaotic LCX sensors cooperation.

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“…Electromagnetic leakage can be caused, among other things, by the structure of the metallic shield, more precisely its holes [13], or by its asymmetry relatively to the central conducting region and which results from technological fabrication limitations [14].…”

Section: Introductionmentioning

confidence: 99%

Low-Leakage With Attenuated Material Loss Hybrid Coaxial Cable

Elbaz¹,

Zalevsky²

2011

PIER B

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Abstract-We investigate a new mean of decreasing leakage and material loss from coaxial cables using different metallic shield and central conducting part geometries. The suggested model is composed of a central conductor surrounded by 40 metallic wires circularly disposed. The proposed cable is also a hybrid one allowing simultaneous transmission of optical as well as radio frequency (RF) signals. The fabrication techniques for the proposed cable are similar to the one applied in the realization of optical fibers. Besides the fact that the attenuation along the proposed cable is reduced, the most important result of this study is that the interference generated by this source on external cables is also lowered.

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Calculation of leakage through apertures on coaxial cable braided screens

Cited by 4 publications

References 1 publication

A LCX-Based Intrusion-Detection Sensor Using a Broadband Noise Signal

A LCX-Based Intrusion-Detection Sensor Using a Broadband Noise Signal

A High-Resolution Leaky Coaxial Cable Sensor Using a Wideband Chaotic Signal

Low-Leakage With Attenuated Material Loss Hybrid Coaxial Cable

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