Results 51 to 60 of about 181,285 (205)
A hybrid adaptive antenna array [PDF]
IEEE Transactions on Wireless Communications, 2010 Owing to the excessive demand on signal processing and space constraint, a full digital implementation of a large adaptive antenna array at millimeter wave frequencies is very challenging. Targeted at long range high data rate point-to-point link in the 70/80 GHz bands, a novel hybrid adaptive antenna array which consists of analogue subarrays followed
Xiaojing Huang 0001 +2 more
openaire +1 more source
An Efficient Beam Steerable Antenna Array Concept for Airborne Applications [PDF]
, 2014 Deployment of a satellite borne, steerable antenna array with higher directivity and gain in Low Earth Orbit makes sense to reduce ground station complexity and cost, while still maintaining a reasonable link budget.
Aliakbarian, H. +5 more
core +1 more source
, 2017 In this paper, we implement hybrid Woodward-Lawson-Neural Networks and weighted Fourier method to synthesize antenna arrays. The neural networks (NN) is applied here to simplify the modeling of MIMO antenna arrays by assessing phases. The main problem is
Bouallegue, Ammar +5 more
core +1 more source
Cogent Engineering, 2016 Array antennas offer a wide range of opportunities in the variation of their directivity patterns through amplitude and phase control. Directivity is one of very important parameters when optimizing Antenna.
Twahir Kazema, Kisangiri Michael
doaj +1 more source
Design of a rectenna system for GSM-900 band using novel broadside 2 × 1 array antenna
The Journal of Engineering, 2017 In this study, a rectenna operating at the GSM-900 frequency band has been fabricated and tested. This rectenna composed of a 2 × 1 T-shaped monopole array antenna and an energy processing circuit.
Manish Singh +2 more
doaj +1 more source
A Microwave/Millimeter Wave Dual-Band Shared Aperture Patch Antenna Array
IEEE Access, 2020 This paper describes the design of microwave/millimeter wave dual-band patch antenna array with shared aperture. The antenna array is designed of stack structure of three printed circuit boards.
Zongxin Wang, Zeqin Huang
doaj +1 more source
Atacama compact array antennas [PDF]
SPIE Proceedings, 2012 We report major performance test results of the Atacama Compact Array (ACA) 7-m and 12-m antennas of ALMA (Atacama Large Millimeter/submillimeter Array). The four major performances of the ACA antennas are all-sky pointing (to be not more than 2.0 arcsec), offset pointing (to be < 0.6 arcsec) surface accuracy (< 25(20) micrometer for 12(7)m ...
Saito, Masao +10 more
openaire +2 more sources
Comparison of Evolutionary Optimization Algorithms for FM-TV Broadcasting Antenna Array Null Filling [PDF]
, 2015 Broadcasting antenna array null filling is a very challenging problem for antenna design optimization. This paper compares five antenna design optimization algorithms (Differential Evolution, Particle Swarm, Taguchi, Invasive Weed, Adaptive Invasive ...
Aristotelis, Bizopoulos +7 more
core
Sidelobe Suppression in Array-Pattern Synthesis Using Periodic Leaky-Wave Antenna and Binomial Array
Modelling and Simulation in Engineering, 2020 This paper presents the conception and realization of a 2D antenna array using periodic leaky-wave antenna (PLWA) and the binomial array (BA) at 6 GHz as the application of WLAN. The series array of periodic leaky-wave antenna was provided by an array of
Hicham Aziz +3 more
doaj +1 more source
Probe modeling for millimeter-wave integrated-circuit horn antennas [PDF]
, 1992 Integrated-circuit probe-excited horn-antenna arrays etched in silicon are well developed. They are a very promising class of antenna arrays for milli-meter and submillimeter applications.
Chiao, Jung-Chih +3 more
core +1 more source