Microw. Opt. Technol. Lett.
 1999
DOI: 10.1002/(sici)1098-2760(19990720)22:2<136::aid-mop17>3.0.co;2-k
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Design of a new photonic cover to increase antenna directivity

M. Th�venot
1
,
Marie-Helene Denis
2
,
Alain Reineix
3
et al.

Abstract: In this paper, we use the intrinsic properties of a two‐dimensional rectangular and three‐dimensional parallelepipedic lattice photonic bandgap (PBG) material to design a cover antenna. We demonstrate the interest in such a device for increasing the directivity of a patch antenna. ©1999 John Wiley & Sons, Inc. Microwave Opt Technol Lett 22: 136–139, 1999.

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Cited by 54 publications

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“…The period of the proposed pattern is 0.8 mm, which is operating at a frequency of about 14.8 GHz. As such, the period of this pattern is about 4% of wavelength at the stopband frequency, which satisfies the conventional definition for an EBG structure [25,26]. The dimensions of the dummy EBG pattern have been shown in Fig.…”
Section: Design Considerations
supporting
confidence: 53%
Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.
“…The period of the proposed pattern is 0.8 mm, which is operating at a frequency of about 14.8 GHz. As such, the period of this pattern is about 4% of wavelength at the stopband frequency, which satisfies the conventional definition for an EBG structure [25,26]. The dimensions of the dummy EBG pattern have been shown in Fig.…”
Section: Design Considerations
supporting
confidence: 53%
Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.
“…The calculated radiation patterns of the line source are plotted in Figs. 6,7,8,9,10,11 where the number of layers in the lower photonic crystal and the distance of the source plane from the lower photonic crystal are fixed to be N 2 =20 and t 2 =0.5h. Figure 6 shows the radiation pattern when the upper photonic crystal is absent.…”
Section: Numerical Results
mentioning
confidence: 99%
Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.
“…When the waves illuminate the FSS, the patches of FSS get excited and they work as aperture antennas. Also the transmission of waves from the the resonator to free space is angle dependent; for normal incidence there is 100% transmission and for incident angle other than normal angle there is attenuation of waves, i.e., the transmission is decided by the angle of incidence [19,20].…”
Section: Effect Of Fss On Antenna Characteristics
mentioning
confidence: 99%
Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.
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