نتایج جستجو برای: microstrip
تعداد نتایج: 5877 فیلتر نتایج به سال:
The low pass filter is used in many application of microwave communication. Therefore it is necessary to design a good low pass filter for the faithful reproduction of wanted signals. Previously used methods to design the low pass filter using insertion loss method don’t give a very good flat response. So, a new method has been proposed for the filter design which gives a good response as compa...
Over the past years microstrip resonators have been widely used in the range of microwave frequencies. In general these structures are poor radiators, but by proper design the radiation performance can be improved and these structures can be used as antenna elements (Damiano & Papiernik, 1994). In recent years microstrip patch antennas became one of the most popular antenna types for use in aer...
The microstrip patch is one of the most preferred antenna structures for ofordable and compact design for wireless system and RF applications. This paper compares the rectangular patch antenna and equilateral triangular microstrip antenna in terms of their return losses and radiation pattern. For the comparative study the Ansoft HFSS V11 is used. Keywords— rectangular micro strip antenna, retur...
In this paper, a very brief and comprehensive survey of recent trends and developments in microstrip antenna research is presented. Comparatively newer fields with potential scope of developments are discussed in more detail. Some advanced topics of microstrip antennas still find enormous scope of improvements and are covered in the limited scope of this article.
In this paper, the cavity model of a microstrip patch antenna in conjunction with the reciprocity theorem is used to develop a fast analytical solution for the radiation field of a microstrip patch antenna loaded with a novel artificial magnetic superstrate and to investigate the effect of the engineered superstrate layer on the directivity and radiation pattern of the printed patch antenna.
If is well known that microstrip transmission line coupling can provide reliable and inexpensive filtering at microwave frequencies (1 ,2,3). As fiber optic communications and personal wireless communications systems evolve, microstrip filters designed on a wide variety of dielectric materials and board thicknesses will be required in microwave sub-carrier transmission equipment (4) and pocket-...
The application of Genetic Algorithm (GA) to the optimization of gain of microstrip antenna, fabricated on ferrite substrate, biased externally by a steady magnetic field, is reported. The fitness function for the GA program is developed using cavity method for the analysis of microstrip antenna. The computed results are compared with the results obtained using GA optimizer of MATLAB.
A prototype of the barrel Tracking Detector of the Compact Muon Solenoid (CMS) experiment proposed for LHC was built and tested in a beam and in a magnetic eld of up to 3 T. It contained 6 microstrip gas chambers, 25 cm long, and 3 double-sided silicon microstrip detectors, 12.5 cm long. We report some preliminary results on the performance of the chambers.
Many detection methods have been applied to detect radon gas. Due to the low noise and high resolution of gas detectors compared to semiconductor detectors or scintillation detectors, using them to detect alpha radiation is very considerable. Microstrip proportional detector is also included in this group and it has not been used for the detection of radon. In this article, response of the micr...
In this paper an Artificial neural network (ANN) design technique for a Stub Microstrip Band-pass filter is presented. Essential dimensions of the microstrip filter layout are used to get the relationship in the inputoutputs of ANN model. This paper presents the design and analysis of Stub Microstrip Band-pass Filter at midband frequency 1.8 GHz which gives improved bandwidth and minimum insert...
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