Miniaturized Low-Cost Phased-Array Antenna Using SIW Slot Elements

Loghmannia, Pedram; Kamyab, M.; Nikkhah, Mohammad Ranjbar; Rezaiesarlak, Reza

doi:10.1109/lawp.2012.2229101

Cited by 36 publications

(13 citation statements)

References 7 publications

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“…It has been extensively applied in realizing both guided-wave and radiative components, including phase-shifters [21], [22], tight-couplers, leaky-wave and phased-array antennas [7], [14], among many other applications. A CRLH transmission line is characterized by the following dispersion relation [14] β…”

Section: A Structure and Principlementioning

confidence: 99%

Magnetoelectric Dipole Antenna Arrays

Gupta

Jiang

Caloz

2014

IEEE Trans. Antennas Propagat.

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Abstract-A planar magneto-electric (ME) dipole antenna array is proposed and demonstrated by both full-wave analysis and experiments. The proposed structure leverages the infinitewavelength propagation characteristic of composite right/lefthanded (CRLH) transmission lines to form high-gain magnetic radiators combined with radial conventional electric radiators, where the overall structure is excited by a single differential feed. The traveling-wave type nature of the proposed MEdipole antenna enables the formation of directive arrays with high-gain characteristics and scanning capability. Peak gains of 10.84 dB and 5.73 dB are demonstrated for the electric dipole and magnetic-dipole radiation components, respectively.Index Terms-Magneto-electric dipole, composite right/lefthanded (CRLH) transmission line, traveling-wave structure, antenna array, leaky-wave antenna, frequency beam scanning.

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Section: A Structure and Principlementioning

confidence: 99%

Magnetoelectric Dipole Antenna Arrays

Gupta

Jiang

Caloz

2014

IEEE Trans. Antennas Propagat.

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“…2,4,5 After injection of therapeutic magnetic particles into the patient's bloodstream, external magnets will conduct the particles towards the tumor locations, [6][7][8][9][10][11][12] blood clot, 13 or infection. 14,15 Magnetic-fields are much more convenient than light, electric-field and ultrasound [16][17][18] to control the motion of the therapeutics inside the body on the grounds of their depth of penetration for deep tumors therapy. Also, magnetic fields can be applied with the strength of 8T for adults and 4T for children in DC type without any problem.…”

Section: Introductionmentioning

confidence: 99%

Nanowires in magnetic drug targeting

Wei¹,

Moghimi²,

Hussain³

et al. 2019

MSEIJ

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Magnetic drug targeting can be used for locoregional cancer therapy, although the limitation is minuteness of the induced force. A new and simple procedure to enhance the magnetic force is changing the shape of carrier particles. It has been mathematically proved that exerting much stronger magnetic dipoles to nanowires are more possible than to spheres with the same volume. The magnetic dipole of wires having aspect quotient (ratio of length to diameter) of 3 is higher than the spheres of the same volume. Nanowires with α=5 have magnetic dipoles 1.95times greater than the spheres with the same volume. At a fixed radius, the magnetic dipole increases with the volume of the drug carrier. Magnetic targeting depth is an important parameter depending on the aspect quotient α of particles. Calculations show that the depth of targeting can exceed 8.5cm if a nanowire with 15nm radius and length larger than 150nm is used as the drug carrier. This depth is 1.7times more than that reported by previous authors for spherical particles with the same-volume.

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“…For example, the phase shifter implemented in [6] required using four p-i-n diodes as switches which are mounted on the SIW. Mounting tunable components such as varactor diodes or switches on the SIW increases the phase shifter complexity and adds parasitics which may become significant at high frequencies.…”

Section: Introductionmentioning

confidence: 99%