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2014 44th European Microwave Conference, 2014
The substrate integrated waveguide can easily be integrated with planar microwave circuits. Antennas designed on this transmission line have a planar structure, and can be fabricated by a standard PCB technology, so they are suitable for mass production.
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The substrate integrated waveguide can easily be integrated with planar microwave circuits. Antennas designed on this transmission line have a planar structure, and can be fabricated by a standard PCB technology, so they are suitable for mass production.
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Propagation characteristics of leaky waves on a 2D periodic leaky-wave antenna
2017 IEEE MTT-S International Microwave Symposium (IMS), 2017A two-dimensional (2D) periodic leaky-wave antenna consisting of a periodic distribution of rectangular patches on a grounded dielectric substrate, excited by a narrow slot in the ground plane, is studied here. The TM0 surface wave that is normally supported by a grounded dielectric substrate is perturbed by the presence of the periodic patches to ...
Sohini Sengupta +2 more
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Leaky wave Antenna for mobile phones
International Meeting on Advanced Technologies in Energy and Electrical Engineering, 2020Millimeter wave (mm-wave) is today’s breakthrough frontier for emerging wireless mobile cellular networks, wireless local and personal area networks, simultaneous energy/data transfer, wearable networks, vehicular communications and radar. Directive antennas emerge as a key component in most of these applications driven by the requirement to meet ...
Youssef El Gholb +3 more
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Full wave analysis of leaky-wave antennas
2008 IEEE Antennas and Propagation Society International Symposium, 2008Leakage from slotted waveguides is a well-known phenomenon and has been thoroughly investigated during the past decades. The interest in leaky-wave antennas mainly stems from the possibility of scanning the beam with frequency [1]. The analysis of slotted waveguides has been first performed by means of a transverse network representation of the open ...
LUCIDO, Mario +3 more
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A Reconfigurable Leaky Wave Antenna
2023 33rd International Conference Radioelektronika (RADIOELEKTRONIKA), 2023Jan Machac +2 more
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Millimeter-wave dielectric leaky-wave antennas
Proceedings of ISSE'95 - International Symposium on Signals, Systems and Electronics, 2002A dielectric leaky-wave antenna with a new perturbation scheme is developed. The attenuation constant with different gap width between metal patches is determined experimentally. The dielectric waveguide used is an anisotropic sapphire rod. The conventional effective dielectric constant (EDC) method is modified to calculate the unperturbed propagation ...
null Chung-Yi Lee +5 more
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Detection of IEDs with leaky wave antennas
2015 8th International Workshop on Advanced Ground Penetrating Radar (IWAGPR), 2015A novel leaky wave antenna with ultrawide band radiation and high fidelity (low dispersivity) is presented. The suitability of this antenna for a hand-held GPR is evaluated through measurements in a quasi-monostatic setup of an antipersonnel mine and an anti-tank IED-like object buried in dry sand.
Deiana, D., Nennie, F., Monni, S.
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Design considerations for leaky-wave antennas
Proceedings of the Institution of Electrical Engineers, 1976General radiation and frequency-scanning characteristics of leaky-wave antennas of infinite length as well as finite length are described. Analytical expressions for gain, side-lobe level and efficiency of a finite-length leaky-wave antenna, for which the propagation constant does not vary along the length of the antenna, are derived. These expressions
I.J. Bahl, K.C. Gupta
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Leaky-wave antennas with anisotropic metamaterials
2010 IEEE Antennas and Propagation Society International Symposium, 2010Leaky wave antennas can offer high directivity and frequency scanning [1]. An isotropic dielectric slab with refractive index n > 1 does not radiate effectively unless spatial variations are introduced to excite fast-wave space harmonics [1]. To realize uniform leaky wave structures, potentially in the optical domain, a metamaterial slab with n ≪ 1 has
null Huikan Liu, K J Webb
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Lumped Element and Leaky-Wave Antennas for Millimeter Waves.
1984Abstract : Some millimeter wave antennas can be scaled from their microwave frequency counterparts, but others cannot because of two main problems; the small wavelengths, which require small waveguide dimensions and pose fabrication difficulties, and higher metal loss.
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