Results 81 to 90 of about 588,345 (204)

Circularly Polarized Antenna Array Fed by CPW-Slot Network

四川大学学报. 自然科学版, 2017
A novel design of a 1×2 and a 2×2 circularly polarized (CP) microstrip patch antenna arrays is presented in this paper. The two CP antenna arrays are fed by sequentially rotated coplanar waveguide (CPW) to slotline networks.
LIU Yi-Lin, HUANG Ka-Ma
doaj  

Design of a Microstrip Series Power Divider for Sequentially Rotated Nonuniform Antenna Array

International Journal of Antennas and Propagation, 2017
This paper deals with the design of a microstrip series power divider for circularly polarized sequential rotational antenna array. The theoretical description of the design is firstly proposed, comprising the cases of nonuniform weighted antenna arrays.
Daniele Inserra, Wei Hu, Guangjun Wen
doaj   +1 more source

Microstrip antennas for a drone-mounted bistatic radar system

Современная наука и инновации
Introduction. This article examines the operational characteristics of a bistatic radar system installed on an unmanned aerial vehicle (UAV) and substantiates the selection of an optimal antenna- feeder system for it.
V. D. Goncharov
doaj   +1 more source

A Broadband Single-Feed Circularly Polarized Patch Antenna with Wide Beamwidth

International Journal of Antennas and Propagation, 2015
A broadband single-feed circularly polarized patch antenna with wide beamwidth is presented. The patch is coupled to four asymmetric cross slots via a microstrip ring with eight matching segments underneath the ground plane, traversing through the arms ...
Changhong Zhang, Junping Geng, Bin Zhou, Xianling Liang, Ronghong Jin   +4 more
doaj   +1 more source

Performance optimization of microstrip antenna array using frequency selective surfaces

Journal of Microwaves, Optoelectronics and Electromagnetic Applications
This paper presents the application of frequency selective surfaces in antenna arrays as an alternative to improve radiation parameters of the array.
Valdez A. Almeida Filho, Antonio Luiz P. S. Campos   +1 more
doaj   +1 more source

Triple band double U-slots patch antenna for WiMAX mobile applications [PDF]

, 2008
A small triple-band 2.7 GHz, 3.2 GHz and 5.3 GHz compact microstrip patch antenna with two U-shaped slots and a small ground plane is presented. It has been developed to be used in future WiMAX technology.
AbuTarboush, HF, Nilavalan, R, Al-Raweshidy, H   +2 more
core   +1 more source

Estimation of dielectric constant for various standard materials using microstrip ring resonator [PDF]

, 2017
Microstrip ring resonator (MRR) is known for dielectric constant determination and many studies used Teflon as a standard sample. However, there are many other materials available which able to perform better or equivalence as the Teflon in calibrating ...
You, Kok Yeow, Abbas, Zulkifly, Low, Pek Jin, Esa, Fahmiruddin   +3 more
core   +1 more source

MODELING OF THE RADIO DIRECTION FINDING PROCESS BY DIGITAL ANTENNA ARRAYS TAKING INTO ACCOUNT THE EFFECT OF MUTUAL COUPLING OF ANTENNA ELEMENTS

Надежность и качество сложных систем
Background. The effect of mutual coupling of antenna elements can have a significant impact on the characteristics of complex, sensitive systems. This effect changes the shape of the directional patterns of antenna elements, changes their active ...
I.V. Peshkov, V.A. Zhigulin, N.A. Fortunova   +2 more
doaj   +1 more source

Modeling of microstrip antenna arrays

, 1994
A new model is developed form the " element by element" approach. It consists in a decomposition in sub-arrays in order to reduce the time of calculation in the modeling of finite arrays. In this modeling we consider that the surface currents are identical on patches which have same neighbourhood configuration.
Schneider, E., Staraj, Robert, Cambiaggio, E., Benevello, Olivier   +3 more
openaire   +1 more source