Results 211 to 220 of about 16,921 (260)
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IETE Journal of Research, 1981
Planar antennas employing printed circuit techniques are ideally suited for aircraft, spacecraft and mobile-land applications. Keeping these in view, a 12×4-element planar array antenna has been developed. The antenna has a power gain of 19 dB. It has a half power beamwidth of 6° in the H-plane and 20° in the E-plane.
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Planar antennas employing printed circuit techniques are ideally suited for aircraft, spacecraft and mobile-land applications. Keeping these in view, a 12×4-element planar array antenna has been developed. The antenna has a power gain of 19 dB. It has a half power beamwidth of 6° in the H-plane and 20° in the E-plane.
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Conformal Microstrip Slot Antenna and Antenna Array.
1986Abstract : This final report covers the investigation of two microstrip antenna types, the microstrip slot radiator and the microstrip dual folded dipole. The slot dipole is a wide bandwidth (20%), low efficiency (20%) radiator suitable for use in for use in serial slot arrays, and is subject to beam steering with frequency.
William Whistler +2 more
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Employing the dumbbell-shaped longitudinal slot antennas in the planar slotted antenna arrays
International Journal of Microwave and Wireless Technologies, 2021AbstractThe dumbbell-shaped longitudinal slot antennas are employed as a replacement for the round-ended longitudinal slot antennas. Each dumbbell-shaped slot is excited by an iris and a septum that have offsets from the waveguide centerlines. All the slots are also cut along the waveguide centerlines. It is demonstrated that the resonant length of the
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Omnidirectional Slotted-Waveguide Array Antenna
29th European Microwave Conference, 1999, 1999An omnidirectional antenna consisting of a waveguide mode transducer and a slotted-wave-guide array has been developed for communication applications at millimeter-wave frequencies.
Wilfried Grabherr, Bernhard Huder
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Slot antenna array on triangular waveguide
2015 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, 2015A new slot array antenna is presented which is based on triangular waveguide. The modes and the leakage of an imperfectly fabricated waveguide are examined by simulation, and this helps to identify a low cost structure. The slots are in the two side walls of the triangular waveguide.
Ying Chen, Rodney G. Vaughan
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Wideband textile slot antenna array
2013 IEEE Antennas and Propagation Society International Symposium (APSURSI), 2013Wideband textile slot antennas have been developed with high precision. The antennas are composed of three textile layers: the top and bottom are conducting layers and are precisely defined by a laser cutting machine, while the third layer is a textile dielectric layer and sandwiched between these two conducting layers.
Stephen Holland +2 more
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Spiral slotted waveguide antenna array
2013 IEEE Antennas and Propagation Society International Symposium (APSURSI), 2013Slotted waveguide antenna stiffened structure (SWASS) integrates the slotted waveguide antennas (SWAs) into the carbon fiber reinforced polymer (CFRP) composites in airplane skins. SWASS utilizes conventional half-wavelength rectangular slots as elements of the SWA array.
Ali Daliri +4 more
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Log-periodic slot antenna array
Microwave and Optical Technology Letters, 2000Wideband operation of a microstrip-fed slot antenna is achieved by arranging the slots in a log-periodic manner. A nine-element log-periodic microstrip slot antenna array operating in the X-band is designed using the finite-difference time-domain method (FDTD).
Ooi, B.L., Chew, K., Leong, M.S.
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Series-slotted waveguide array antennas
Proceedings of the IEEE, 1963Waveguide arrays with slots in the broad face use either longitudinal shunt slots displaced from the centerline or inclined series slots on the centerline. Despite the established popularity of the shunt-displaced slot, a case can be made for the superiority of the series-inclined slot.
J. Ramsay, B. Popovich
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Waveguide slot array antenna with corner reflector array
2013 International Workshop on Microwave and Millimeter Wave Circuits and System Technology, 2013A waveguide slot array antenna with corner reflector array of high performance for a microwave radar system at 10 GHz frequency band is presented. The waveguide, the slot array and the corner reflector array are located together on the cover plate of the antenna, which makes the antenna highly efficient.
null Yi Zheng, null Shaojun Chen
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