Antenna,microstrip, patch antenna,coaxial cable,radio,microwave engineering,probe feed,cst,coaxial feed using cst,cst studio suite, antenna design tutorial,ant. This example shows how you can characterize the patch array and use circuit simulation to control feeding each patch element with different phase and magnitude changes to steer the main lobe of the antenna. The transmit tx antenna uses a bfn and a patch antenna array. Intermediate ruby monkey patching, modules codequizzes. A seriesfed microstrip patch array with interconnecting crlh transmission lines for wlan applications bilal ijaz, sayan roy, muhammad mubeen masud, adnan iftikhar, sanjay nariyal. Open access journal page 25 it is worth to mention that, the rectangular patch width w has a minor effect on the resonant frequency and.
Directional patch antenna array design for desktop. In ruby, python, and many other dynamic programming languages, the term monkey patch only refers to dynamic modifications of a class or module at runtime. Modern computeraided design even allows the arrays to follow curves contours of aircraft or vehicle bodies. Directional patch antenna array design for desktop wireless internet abstract to improve desktop wireless internet access, two patch antenna configurations were investigated in order to find an alternative for a dipole antenna, which is commonly used for wifi access. A block is like a method, and you specify a block after a method call, for example. All users of the monkey patched class see the same changes. These antennas can be mounted on the surface of highperformance aircraft, spacecraft, satellites, missiles, cars, and even handheld mobile telephones. The understanding of the physical behaviour of the patch antenna reveals that the slots. Introduction most common patch antenna array feeding network configurations are. The fundamentals of patch antenna design and performance. The final part of this work has been concentrated on studying an array antenna with two and four elements. Seriesfed aperturecoupled microstrip antennas and arrays.
Ruby makes it easy to add, remove, and replace methods on any class even core classes like array but it is generally frowned upon. This includes the default ruby classes like string, array, or hash. Optimal pattern synthesis of linear array and broadband. Feasibility study of microstrip patch antenna array design. Performance analysis of corporate feed rectangular patch element and circular patch element 4x2 microstrip array antennas md. Moshkin abstract this paper presents a summary of most common feeding confgurations used for patch antenna arrays. The antenna is studied numerically and it shows good performance.
Design of an 8x1 square microstrip patch antenna array. Design and implementation of patch antenna 5 designs, and very versatile in terms of resonant frequency, polarization, pattern, and impedance. Yes thats right, you can actually reopen any class and change how it works. Functionality for the design of linear and rectangular antenna arrays no need for full cad design. The antenna array 1, 2 is mainly used to enhance directivity, improve gain coefficient, or to obtain the required directional characteristics. Dzone web dev zone how to use monkey patch in ruby. Microstrip patch antennas mpas have attracted widespread interest due to their small size, light weight, low profile and low cost as well as to the fact that they are simple to manufacture, suited to planar and non planar surfaces, mechanically robust, easily integrated with circuits, allow multifrequency operation to. Connector and cable are not included in standard shipments. Patch array antenna example the antenna in this example is a 4 by 4 patch array simulated for antenna characteristics using axiem. The example compares the patterns from the two arrays to show the design tradeoff. Performance analysis of corporate feed rectangular patch. All features are contained inside the hashdiff module. Linear arrays of rectangular microstrip patch antennas.
The aim of this chapter is to show various ways to overcome this problem by using various matching techniques for numerous patch antenna array schemes. Design of a kaband wide scanning phased array antenna. Ruby eases the possibility to monkey patch due to the fact that ruby classes or modules can be reopened this mechanism can be useful even if the liskov substitution principle is always. Comparison between rectangular and circular patch antennas array. Linear polarization horizontal or vertical pole is discussed.
Design of microstrip array antenna for wireless communication application. The adaptation of the antenna is done by achieving di. Ruby monkey patching array ask question asked 4 years, 11 months ago. Pdf design of a kaband wide scanning phased array antenna. A seriesfed microstrip patch array with interconnecting. Chapter 2 design of planar microstrip antenna arrays and mutual coupling effects in patch antennas, characteristics such as high gain, beam scanning, or steering capability are possible only when discrete patch elements are combined to form arrays. The present paper deals with the performance characterization among the 2x2, 3x3, 4x4 array antennas. The phased antenna array has four microstrip patch antennas, three wilkinson power dividers and a transmission line phase shifter printed on the dielectric substrate with a dielectric constant of 4.
Rfid coverage extension using microstrip patch antenna array. Here are the written requirements for the array class monkey patch. Pdf microstrip rectangular 4x1 patch array antenna at 2. In the present design of ku band microstrip array antenna, a unique scheme for dc grounding is proposed.
The patch element array has a significant backlobe as compared to the cosineelement array. This paper present 3 design of array antenna from type of insetfed microstrip patch antenna located at 45deg and 45deg and capable to generate dualpolarization radiation pattern. Pdf dual polarization insetfed microstrip patch antenna. A 2x2 polarization switchable patch antenna array for. Patch antenna arrays and feeding networks georgy v. Ruby has a very beautiful syntax and so it can be tempting to monkey patch a class to turn some ugly method call into something that is more readable. This example starts the design of an antenna array for fmcw radar with an ideal cosine antenna and then uses a patch antenna to form the real array. Antenna arrays phased arrays an antenna array often called a phased array is a set of 2 or more antennas. Antennas and antenna arrays design and analysis with. There are many cases where its fine to monkey patch, but it should definitely not be your first weapon of choice. To be honest, thats the best and, when used right, incredibly. This includes the standard ruby classes like string, array or hash. The signals from the antennas are combined or processed in order to achieve improved performance over that of a single antenna. Introduction microstrip patch antennas have problems of low bandwidths.
That time monkey patching took 2 days off my life a geek with a hat. In telecommunications and radar, a reflective array antenna is a class of directive antennas in which multiple driven elements are mounted in front of a flat surface designed to reflect the radio waves in a desired direction. The proposed adaptive array antenna is built using a microstrip rectangular uslotted patch antenna element. Comparison of performance characterization in 2x2, 3x3 and. For the array of patch antennas the axial ratio is lower.
Design and analysis of microstrip patch antenna arrays. Edn millimeter wave beamforming and antenna design. Monkey patching is a programming technique popular in the ruby world. This paper presents the design of microstrip rectangular patch antenna with center frequency at 2.
A multichannel frequency modulated continuous wave fmcw radar, which operates in the ism band at 24 ghz can do the job. Microstrip patch antenna arrays are currently used in satel. Seriesfed aperturecoupled microstrip antennas and arrays by bojana zivanovic a dissertation submitted in partial fulfillment of the requirements for the degree of doctor of philosophy department of electrical engineering college of engineering university of south florida major professor. The patch antenna is mainly practical at microwave frequencies, at which wavelengths are short enough that the patches are conveniently small. Design and simulation of microstrip phase array antenna. Antennas and antenna arrays design and analysis with matlab stefano olivieri academia group. Adaptive technologies that can vary both phase shift and power to each element allow those arrays to be electronically steerable. This leads into the discussion of antenna polarization. The polarization or polarisation of electromagnetic em waves or fields is introduced. If youre not interested in my thoughts about monkey patching you might wanna jump. Keywords patch antenna, polarization modulation, wireless communications, 2x2. If youre a ruby programmer chances are high that youve. Or perhaps you need to monkey patch a class you own. Hashdiff is a ruby library to compute the smallest difference between two hashes.
Microstrip patch antenna array design to improve better. It is widely used in portable wireless devices because of the ease of fabricating it on printed circuit boards. Vinoy department of electrical communication engineering, indian institute of science, bangalore 560012, india abstractthis paper presents the design, development and experimental characterization of a monolithic phased array antenna. Quad patch this compact antenna provides high gain across the narrow frequencies very commonly used in wireless systems. A microstrip patch antenna can be modelled as an open circuited transmission line with two slots. Printed circuit board antennas commercial and hobby antennas. The design consists of e patch and a rectangular radiator. By controlling the phase and magnitude of the input signal assigned to each antenna element and the number of array elements, the radiation pattern can be steered in a desired direction with a preferred level of. The elements of an array may be spatially distributed to form a linear, planar, or volume array. A seriesfed microstrip patch array with interconnecting crlh transmission lines for wlan. The receive rx antenna is based upon a rl and a patch antenna array designed with microstrip technology.
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