onopulse - ased Array Syste
نویسنده
چکیده
With the advance of high speed laser technology, optical interaction with microwave circuits has become highly viable. Such interaction is advantageous as the fiber is low-loss, lightweight, and immune to electromagnetic interference. In this paper, interaction of direct-modulated and gain-switched optical links with active antenna phased array systems is demonstrated. In the direct-modulated optical system, the RF signal directly modulates the DFB laser. In the gain-switched optical system, the laser is gain-switched to function as a RF frequency doubler. The modulated signal is transmitted via an optical fiber and recovered at the receiving end by a high-speed photodetector. The recovered RF is then injected into the active antenna phased array systems as an injection-locking reference signal. Two active antenna systems are used for this demonstration: beam-switching and Doppler transceiver.
منابع مشابه
Ased-aim Analysis of Scattering by Large- Scale Finite Periodic Arrays
In this paper, the Adaptive Integral Method (AIM) has been extended to characterizing electromagnetic scattering by large scale finite periodic arrays with each cell comprising of either dielectric or metallic objects, by utilizing accurate sub-entire-domain (ASED) basis function. The solution process can be carried out in two steps. In the first step, a small problem is solved in order to cons...
متن کاملAsymptotic Analysis of Subspace
Asymptotic analysis methods for performance prediction of so-called subspace direction-of-arrival estimation methods has been developed earlier, assuming that a large-enough number of array measurements, or snapshots, is collected. This paper also addresses the problem of making performance predictions, but for beamspace-based subspace methods. The novel approach in this paper assumes the numbe...
متن کامل!LEM: A Method for Predicting User Interaction Time and System Energy Consumption during Application Design
H#e i)*a"t o' +ser intera"tions on t#e ele"tri" energy "ons+)*tion o' a *orta=le "o)*+ter syste) an2 on +ser e''i"ien"y is o'ten not o=taina=le +ntil a'ter t#e so'tIare a**li"ation is i)*le)ente2 an2 2e*loye2 on a s*e"i'i" #ar2Iare *lat'or)G Jn t#is *a*er> Ie *resent t#e KeystroLeMNevel 5nergy Mo2el OKN5MP> a )et#o2 t#at "an *re2i"t t#e +ser ti)e an2 syste) energy "ons+)*tion it Iill taLe to *e...
متن کاملOne-dimensional Deterministic Greenberg-Hastings Models
In this simple model for a one-dimensional array of excitable cells, each site x E Z is in one of I), states: 0 (rested state) , 1 (excited state), 2, . .. ,1), 1 (refract ory states) . The states update in discrete t ime according to a synchronous rule: changes 1 ~ 2, . .. , I), 1 ~ 0 happen auto matically, while t he 0 ~ 1 change is induced by at least a threshold numb er of I s in t he local...
متن کامل