Results 31 to 40 of about 300,396 (142)
Robust Synthesis Algorithm for Directional Modulation Signal with Array Manifold Vectors Uncertainty
International Journal of Antennas and Propagation, Volume 2020, Issue 1, 2020., 2020 Directional modulation (DM) has become a new research hotspot of physical layer security (PLS) communication at the transmitter side. In this paper, we propose a robust synthesis algorithm for DM signal under the condition of the array manifold vectors perturbation.
Tao Hong, Ana Alejos
wiley +1 more source
Wireless Communications and Mobile Computing, Volume 2020, Issue 1, 2020., 2020 Millimeter‐wave (mmWave) networks with the frequency spectrum ranging from 30 GHz (with wavelength 10 mm) to 300 GHz (with wavelength 1 mm), can support massive wireless data in fifth‐generation (5G) systems. Importantly, large colocated antenna elements can be exploited at the base station (BS) to facilitate beam‐steering synthesis along the users ...
Shaddrack Yaw Nusenu +2 more
wiley +1 more source
ATOMATIC EARLY WARNING DEVICE OF ENVIRONMENTAL RISKS AT WATERBODIES AND ITS APPROBATION
Transactions of the Karelian Research Centre of the Russian Academy of Sciences, 2016 Automatic early warning device of environmental risks at water bodies may be regard as biomonitoring utility by remote monitoring of Bivalve conditions.
Andrey Ipatov +3 more
doaj +1 more source
Overview on the Phase Conjugation Techniques of the Retrodirective Array
International Journal of Antennas and Propagation, 2010 This paper presents an overview on the phase conjugation techniques of the retrodirective antenna array. The concepts, advantages, and disadvantages of phase conjugation techniques are introduced.
Lei Chen +3 more
doaj +1 more source
Double U-slots patch antenna for tri-band wireless systems [PDF]
, 2010 File shown is the pre-print version of the published paper, with the title "Connected u-slots pathch antenna for WiMAX applications"ABSTRACT: A compact microstrip patch antenna with two U-slots shape is presented.
AbuTarboush, HF +11 more
core +1 more source
Frequency offset retrodirective antenna array
Electronics Letters, 1997 A new architecture for the Van Atta self-steering array is presented. Active antenna techniques are used to realise a compact self-steering array with enhanced retrodirective properties. The experimental performance of the array is demonstrated and a technique is described which compensates for the beam pointing error induced by antenna array element ...
S.L. Karode, V.F. Fusco
openaire +1 more source
24 GHz active retrodirective antenna array
Electronics Letters, 1999 A 24 GHz active Van Atta planar antenna array proposed for increasing the vehicle radar echo in a vehicle collision avoidance system is designed and demonstrated. The antenna array contains two parallel linear sub-arrays. Each sub-array is composed of four receiving microstrip antennas, four transmitting microstrip antennas and four transistor ...
null Hong, null Chung
openaire +1 more source
Neural Network–Assisted Metasurface Retroreflector With Wide‐Angle Adaptivity
Electron, Volume 4, Issue 2, May 2026.This work proposes a wide‐angle, multi‐polarization, self‐sensing, and self‐adaptive intelligent metasurface retroreflector, with a planar profile and ultrathin thickness. By integrating a pre‐trained artificial neural network (ANN), the metasurface retroreflector can recognize the incident angle and promptly adapt to changes in the incoming wave.
Jing Ning +7 more
wiley +1 more source
Electronics Letters, Volume 62, Issue 1, January/December 2026.This letter proposes a reference‐value‐based non‐retrodirective cross‐eye jamming method using monitor probes for size‐constrained platforms. The proposed approach uses reference values to compensate for mismatch and improve practical implementation in compact jammer systems.
Hong‐Kyun Ryu, Jung‐Hoon Lee
wiley +1 more source
Development of Frequency Modulated Array Antennas for Millimeter‐Wave Communications
Wireless Communications and Mobile Computing, Volume 2019, Issue 1, 2019., 2019 With the massive growth of wireless data in mobile broadband communications, millimeter‐wave (mm‐wave) communication is an alternative enabling technique for fifth generation (5G) wireless communication systems. More importantly, mm‐wave offers large frequency spectrum bands ranging from 30GHz to 300GHz that can be utilized to provide very high ...
Shaddrack Yaw Nusenu, Daniele Pinchera
wiley +1 more source