[PDF] Top 20 Aplicación de algoritmos genéticos en problemas de Ingeniería

... the use of frequency spectrum, new and existing satellite operators in the tropics may soon have no other alternative but to progress up to frequencies as high as the ...on satellite signals at such ... See full document

... The use of X-band satcom will be materialized in Malaysia for the next few ...digital communication means for the government or armed authorities to transmit a high data, sounds and videos between ... See full document

... of satellite communication is shown by mentioning types of orbit, frequency bands and a block diagram of satellite ...‘Bangabandhu Satellite-1’, the first GEO satellite of ... See full document

... satellite applications operate at both 0.75 GHz and 1.221 GHz. The dual-passband operation for RF circuits has become a demand after the recent development in the wireless communication. The center ... See full document

... Nevertheless, numerous propagation measurement campaigns have been actively carried out to characterise the behaviour of clear sky scintillation experienced by satellite radio links. Unfortunately, most of the ... See full document

... The return loss is studied with respect to frequency variation is shown in the fig -2(a). By using the CST software that is seen from the antenna resonates at a single resonant frequency fr is equal to 20.88GHz with a ... See full document

... where rad and R are the angle and radius of arc-shaped strip, respectively. c is the speed of light. ε r is the relative dielectric of the substrate, and f is the desired resonant frequency. Dual inverted L-shaped ... See full document

... wireless communication systems such as Bluetooth, WIMAX (World Wide Interoperability for Microwave Access), and WLAN (Wireless Local Area Network) have been developed and used vastly ...microwave ... See full document

... S1 was cut on the radiating patch with SL1 = 0.75 mm and Sw1 =15 mm, which is about a quarter of the wavelength (λ/4) calculated at 5 GHz in the WLAN band. Slot S1 provides notch of 5.18-5.82 GHz for WLANs ... See full document

... of satellite-relay communication terminal is to measure the function and performance of relay communication terminal ...relay communication terminal can meet the test outline of ... See full document

... Satellite communication service industry has grown more rapidly than was forecasted in ...increased communication services for both business and consumer ...internet communication services has ... See full document

... like satellite and airborne communication, wireless communication system and electronic counter measure (ECM) systems, because of its smaller size, low manufacturing cost ,ease of integration with ... See full document

... Abstract—This paper introduces novel derived transformation equations to design Tri-band filters. The design utilizes the approach adopted for tri-band bandpass filter design based on asymmetric half- ... See full document

... A V-band receiver using a MHMIC multiport circuit is presented in this ...the future low- cost high-speed millimeter-wave wireless communication ... See full document

... Abstract—This paper presents a neural network based technique for the analysis of various stacked patch antennas, those can be applied for satellite and wireless local area network (WLAN) applications. In order to ... See full document

... the use of commercial off the shelf (COTS) elements so they can be used in a lot of applications such as earth observation, education, military applications, distance learning, telemedicine, universal access, ... See full document

... Figure 2: Rainfall intensity vs. rainfall attenuation for JJAS months of New Delhi for 64 years (1951-2014) The attenuation curve for New Delhi monsoon of 64 years shown in figure 2 reveals that the rainfall intensity ... See full document

... Frequency scaling method of rain attenuation has been used to obtain a rough estimation of the attenuation statistic at the desired frequency from measured attenuation values at another frequency. Many scaling models ... See full document

... The frequency and bandwidth tuning ability is essential for the next generation of communication satellites since this enables user reconfigurable satellites. In addition, the custom tuned, fixed frequency filters ... See full document

... makes use of short duration pulses which have very low power spectral density for transmission of ...narrowband communication systems such as WiMax (Worldwide Interoperability for Microwave ...X-band ... See full document