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ARPN Journal of Engineering and Applied Sciences

Design and analysis of microstrip patch antenna for RADAR altimeter

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Author Abhijeet Kumar, S. K. Sriwas, Pramod Kumar and Mahendra Kumar
e-ISSN 1819-6608
On Pages 466-470
Volume No. 18
Issue No. 05
Issue Date April 05, 2023
Keywords antenna, RADAR, altimeter, gain.


The most important parameter for any flying vehicle is altitude. Different techniques and methods are available for altitude measurement; one of these methods is RADAR Altimetry. In this technique altitude measurement of an in-flight vehicle is measured by using RF waves and RADAR. RADAR Altimeter transmits low-power radio waves, these waves incident on the earth and get reflected back with a shift of about 40 Hz/feet. The altitude is determined as per the time delay between the signals which is measured by differentiating the broadcast and received signal for a specific time period. The RADAR altimeter operates on a frequency range of 4.2 to 4.4 GHz in the C-Band. Different shapes of microstrips are tested and used for this application. In this article, a rectangular microstrip antenna is designed and simulated at 4.2GHz and its performance and characteristics are analysed using ANSYS HFSS.


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