Radio propagation in frequency selective buildings

Raspopoulos, Marios; Chaudhry, Farhan A.; Stavrou, Stavros

doi:10.1002/ett.1127

Cited by 16 publications

(10 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Element size should be small in terms of wavelength to avoid grating lobes [2,3]. For such a loop type element geometry as shown in Figure 2, the element sizes are typically less than about 0.3 wavelength.…”

Section: Figure 1 Frequency Selective Surfacementioning

confidence: 99%

“…Interference mitigation can be achieved using advanced signal processing or antenna designs. A more and an efficient approach is to transform a building wall to a frequency selective surface which filters out undesired signals but allows the others [2]. Frequency selective surfaces (FSS) are periodic structures which have filter characteristics depending upon their geometries when interacting with electromagnetic waves [3,4].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Design for the structural surface material enabling shielding for interference mitigation within the buildings in the unlicensed 2.4ghz ISM band

Kartal

Döken

Gungor

2011

2011 XXXth URSI General Assembly and Scientific Symposium

View full text Add to dashboard Cite

This work is proposed to design shielding for interference mitigation and network security within the buildings in the unlicensed 2.4GHz ISM band and to provide maximum transparency at broadcast frequencies. Thus, mobile phones, radio and television signals in buildings will not be affected. Frequency Selective Surface (FSS) is attached onto existing common construction material to transform the standard material into a band stop frequency selective wall. To obtain the band response of FSS having a desired frequency interval, a new FSS periodic element geometry is introduced. The obtained results show that desired frequency response is achieved. HFSS software is used for simulation purposes.

show abstract

Section: Figure 1 Frequency Selective Surfacementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design for the structural surface material enabling shielding for interference mitigation within the buildings in the unlicensed 2.4ghz ISM band

Kartal

Döken

Gungor

2011

2011 XXXth URSI General Assembly and Scientific Symposium

View full text Add to dashboard Cite

show abstract

“…Much of the research dedicated to reducing signals has employed the use of Frequency Selective Surfaces (FSS) as a large area filter, which can be incorporated into walls or as wall paper [6][7][8][9]. This type of approach is useful for alleviating co-channel interference for adjacent rooms within a building, however, for blocking signals FSS have limitations.…”

Section: Introductionmentioning

confidence: 98%

Secure electromagnetic buildings

Roberts

Ford

Rigelsford

2014

The 8th European Conference on Antennas and Propagation (EuCAP 2014)

View full text Add to dashboard Cite

Simulation results of a phase varying surface are presented as a technique for impairing a wireless communications signal. The applications of this technique are for secure electromagnetic buildings, where communication through walls or buildings is not desired. The received signal frequency spectrum and bit error rate plots are presented showing bit error rates over 30% for a wide range of input parameters. This demonstrates a robust solution to wireless signal impairment. Index Terms-Frequency selective surface, GSM modelling.

show abstract

“…Another efficient approach is to transform a building wall to a frequency selective surface, which filters undesired signals out, but allows the other signals. Frequency selective surfaces (FSS) are planar periodic structures whose geometries and dimensions determine their resulting filter characteristics .…”

Section: Introductionmentioning

confidence: 99%

A new frequency selective absorber surface at the unlicensed 2.4‐GHz ISM band

Kartal

Döken

2016

Micro & Optical Tech Letters

View full text Add to dashboard Cite

Wireless devices in the unlicensed ISM bands cause mutual interference in indoor environments. This interference does not only degrade system performance but also compromises security. An efficient approach to solve this problem is transforming a building wall to a frequency selective surface (FSS), which filters undesired signals, but allows signals of other devices such as mobile phones, radios and televisions. As a band‐stop filter, FSS acts as a reflector that causes additional multipath, delay spread and signal degradation. The aim of this study is proposing a design of FSS absorber (FSAS) at the unlicensed 2.45 GHz ISM band to eliminate the reflected signal while it still acts as a band‐stop filter. Absorber characteristic is achieved by placing a second FSS layer comprising lossy periodic FSS elements or placing lumped resistors on the conducting paths of periodic element geometries. HFSS software is used for simulation and design purposes. The minimum attenuation was obtained as 20 dB on the transmission (S21) coefficient, while it was obtained as 10 dB on the reflection (S11) coefficient, respectively. The simulation and measurement results obtained show that the desired frequency response is successfully achieved for both TE and TM polarizations. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:2351–2358, 2016

show abstract

Radio propagation in frequency selective buildings

Cited by 16 publications

References 16 publications

Design for the structural surface material enabling shielding for interference mitigation within the buildings in the unlicensed 2.4ghz ISM band

Design for the structural surface material enabling shielding for interference mitigation within the buildings in the unlicensed 2.4ghz ISM band

Secure electromagnetic buildings

A new frequency selective absorber surface at the unlicensed 2.4‐GHz ISM band

Contact Info

Product

Resources

About