Microstrip antenna has a very thin metallic strip (patch) (t<< λ) generally or rectangular shape is placed on the above portion of the antenna. a. The overall length of the antenna … inoyBIX educates thousands of reviewers and students a day in preparation for their board examinations. Also provides professionals with materials for their lectures and practice exams. … the patch and the aperture of the horn antenna in the role of the primarily radiator. Each of this radiator, while functioning has its own induction field. At the moment, Pinoybix has become one of the most trusted engineering review sites helping thousands of aspiring engineers achieve their goals. Aperture efficiency of antenna is a. Professionals, Teachers, Students and Kids Trivia Quizzes to … c. Both a and b. d. None of the above. Microstrip patch antenna consists of a radiating patch on one side of a dielectric substrate (FR4) that has a ground plane (Cu) on the other side as shown in Fig. I have been designing a micro strip patch antenna with inset feed and I have a few HFSS simulation questions Substrate dielectric: 3.5 Substrate height : 1.5mm Frequency: 2.5GHz I followed a particular video on YouTube to guide me, and used an online calculator for the width and length of patch… An antenna array is a radiating system, which consists of individual radiators and elements. 1) Which among the following exhibits perpendicular nature in TEM wave? The directivity of a patch can be estimated quite easily: Answer : The antenna is a radiating device in which power is radiated into space in the form of electromagnetic wave. Explanation: A common way to increase bandwidth in the antenna is to use a version of the dipole antenna known as the conical antenna. Their low profile design, often square or rectangular, allows them to be mounted to flat surfaces. The elements are placed so closely that each one lies in the neighbouring one’s induction field. b. Microstrip. - … 22. 1. Coupling an antenna to a separate resonant circuit at a similar frequency is often done to increase its bandwidth, for instance in a slot-coupled patch. Help me go forward with the same spirit. Home >> Category >> Electronic Engineering (MCQ) questions & answers >> Antenna & Wave Propagation; Q. Antenna beamwidth is a measure of directivity of an antenna. If the antenna had a 100% radiation efficiency, all directivity would be converted to gain. 25. Page 2 16. 27. MCQ in Antennas Part 4 as one of the Communications Engineering topic. , M I S T E . … the microstrip on the bottom, the slot in the middle, and the patch on the top. 1: Physical geometry of microstrip antenna Fig. Azimuth. d. Lens. Antenna efficiency = Power radiated / Total input Power. Maximum effective area to physical area c. Effective area to physical area d. physical area to effective area 2. a. 1 m – 10 m b. Multiple Choice Questions and Answers on Antenna & Wave Propagation Multiple Choice Questions and Answers By Sasmita January 14, 2017 1) What is the wavelength of Super high frequency (SHF) especially used in Radar & satellite communication? 26. The efficiency of an antenna is defined as the ratio of power radiated to the total input power supplied to the antenna. According to the geometry, how many sterdians are present in a full sphere? The patch structure and the ground plane are placed on the opposite phases of the antenna, and separated by a dielectric material sheet which is … Quiz & question bank based on university syllabus covering all lessons, lecture notes, concepts & formula from textbooks. Following is the list of multiple choice questions in this brand new series: P Such an antenna is called as half-wave dipole antenna. Electric field b. Patch antennas come in various shapes and sizes and consist of a patch of metal directly above a ground plane. Which conversion mechanism is performed by parabolic reflector antenna? c. Array. The metal patch on the front surface can have various shapes, although a rectangular shape, as shown in Figure 6.17, is commonly used. 2.6. This antenna type is made with microstrip based design on PCB.Hence it is called as microstrip patch antenna. - Published on 01 Oct 15. a. Pinoybix.org is an engineering education website maintained and designed toward helping engineering students achieved their ultimate goal to become a full-pledged engineers very soon. Subscribe to our mailing list and get interesting stuff and updates to your email inbox. Antenna aperture is same as----- [ ] The direction of the electric field vector, 34. A pinoybix mcq, quiz and reviewers. The aperture-fed patch antenna consists of … Possible answers for question 1: … the patch and the coaxial probe in the role of feeding. Question 14. Harikesh Yadav June 1, 2017 ECE MCQ PDF, General. For example, some patch antennas are approximately half a wavelength on each side. 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Additional benefits of patch antennas is that they are easily fabricated making them cost effective. By focusing the radiated energy in one desired direction. 2: Typical radiation pattern of microstrip antenna. DGS has been applied to antenna designs to suppress harmonics, cross polarization of a patch antenna, and to increase the isolation between antennas. Antenna array. 24. Figure 5.27 shows an example of a patch antenna. Below are the answers key for the Multiple Choice Questions in Antennas Part 1. Useful for freshers, students preparing for semester exams, interview, GATE, IES, PSU, UPSC & diploma. Microstrip Patch Antennas (or simply patch antenna) are increasingly useful because the antenna is printed directly onto a circuit board. a. Subscribe to our mailing list and get interesting stuff and updates to your email inbox. What Is Radiation Resistance ? 24. (function() {var script=document.createElement("script");script.type="text/javascript";script.async =true;script.src="//telegram.im/widget-button/index.php?id=@allexamreview";document.getElementsByTagName("head")[0].appendChild(script);})(); Home >> Category >> Electronic Engineering (MCQ) questions & answers >> Antenna & Wave Propagation; Q. Fig. Parabolic dish antenna. Narrowband MIMO Systems - In [ 42 ], a defected ground structure (DGS) consisting of concentric circular rings in different configurations is presented and its stop band characteristics are examined. Wavelength on each side patch of metal directly above a ground plane overall length of antenna... … the dipole antenna is basically circular or rectangular, allows them be. Especially used in Radar & satellite communication antennas come in various shapes sizes. Radiated into space in the neighbouring one ’ s induction field the most widely used antenna because of its.... 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