عنوان مقاله :
ﺳﻨﺘﺰ ﻧﻤﺎﯾﻪ آﻧﺘﻦﻫﺎي ﻣﻮج ﻧﺸﺘﯽ ﺑﺮ ﭘﺎﯾﻪ ﻣﻮجﺑﺮ زﯾﺮﻻﯾﻪ ﺑﺎ اﺳﺘﻔﺎده از اﻟﮕﻮرﯾﺘﻢ ﺑﻬﯿﻨﻪﺳﺎزي
عنوان به زبان ديگر :
Pattern Synthesis of Substrate Integrated Waveguide Leaky-Wave Antennas Using Optimization Algorithm
پديد آورندگان :
ﺣﯿﺪري، ﻓﺮﻧﻮش داﻧﺸﮕﺎه آزاد اﺳﻼﻣﯽ واﺣﺪ ﺷﯿﺮاز - ﮔﺮوه ﻣﻬﻨﺪﺳﯽ ﺑﺮق، ﺷﯿﺮاز، اﯾﺮان , عادل پور، زهرا داﻧﺸﮕﺎه آزاد اﺳﻼﻣﯽ واﺣﺪ ﺷﯿﺮاز - ﮔﺮوه ﻣﻬﻨﺪﺳﯽ ﺑﺮق، ﺷﯿﺮاز، اﯾﺮان , ﭘﺮﻫﯿﺰﮔﺎر، ﻧﺎﺻﺮ داﻧﺸﮕﺎه آزاد اﺳﻼﻣﯽ واﺣﺪ ﺷﯿﺮاز - ﮔﺮوه ﻣﻬﻨﺪﺳﯽ ﺑﺮق، ﺷﯿﺮاز، اﯾﺮان
كليدواژه :
ﺳﻄﺢ ﮔﻠﺒﺮگﻫﺎي ﮐﻨﺎري , آﻧﺘﻦ ﻣﻮج ﻧﺸﺘﯽ , ﻣﻮجﺑﺮ ﻣﺠﺘﻤﻊ ﺷﺪه زﯾﺮﻻﯾﻪ , ﻧﺮخ ﻧﺸﺖ , ﻧﻤﺎﯾﻪ ﻣﺠﺬور ﮐﺴﮑﺎﻧﺖ
چكيده فارسي :
در ﻋﺼﺮ ﺟﺪﯾﺪ ﺗﮑﻨﻮﻟﻮژي، آﻧﺘﻦ ﺑﺎ ﻧﻤﺎﯾﻪ ﻣﺠﺬور ﮐﺴﮑﺎﻧﺖ، ﻧﻘﺶ ﻣﻬﻤﯽ در ﮐﺎرﺑﺮدﻫﺎي راداري اﯾﻔﺎ ﻣﯽﮐﻨﺪ ﮐﻪ ﻣﯽﺗﻮان ﺑﻪ ﮐﺎرﺑﺮد آﻧﻬﺎ ﺑﺮاي ﭘﻮﺷﺶ ﯾﮏ ﻣﻨﻄﻘﻪ ﻫﻮاﯾﯽ ﺟﻬﺖ ﺟﺴـﺘﺠﻮي اﻫـﺪاف و ﺗﺨﻤﯿﻦ ارﺗﻔﺎع آنﻫﺎ اﺷﺎره ﮐﺮد. در اﯾﻦ ﻣﻘﺎﻟﻪ روﺷﯽ ﺟﻬﺖ ﺳﻨﺘﺰ ﻧﻤﺎﯾﻪ ﻣﺠﺬور ﮐﺴﮑﺎﻧﺖ ﺑﺎ اﺳﺘﻔﺎده از آﻧﺘﻦ ﻣﻮج ﻧﺸﺘﯽ اراﺋﻪ ﺷﺪه اﺳﺖ. آﻧﺘﻦﻫﺎي ﻣﻮج ﻧﺸﺘﯽ ﮔﻮﻧﻪاي از آﻧﺘﻦﻫﺎ ﻫﺴﺘﻨﺪ ﮐﻪ ﻣﮑﺎﻧﯿﺴﻢ اﺻﻠﯽ آﻧﻬﺎ ﺗﻀﻌﯿﻒ ﻣﻮج ﺑﺎ ﻧﺸﺖ ﺗﻮان ﻫﻢزﻣﺎن ﺑﺎ اﻧﺘﺸﺎر ﻣﻮج در ﻃﻮل ﺳﺎﺧﺘﺎر اﺳﺖ؛ ﻟﺬا ﺑﺎ ﮐﻨﺘﺮل ﺛﺎﺑﺖ ﻧﺸﺖ و ﺛﺎﺑﺖ ﻓﺎز در ﻃﻮل ﺳﺎﺧﺘﺎر ﻣﯽﺗﻮان ﺑﻪ ﺳﻨﺘﺰ ﻧﻤﺎﯾﻪﻫﺎي ﺗﺸﻌﺸﻌﯽ ﻣﻮردﻧﻈﺮ رﺳﯿﺪ. در اﯾﻦ ﭘﮋوﻫﺶ از اﻟﮕﻮرﯾﺘﻢ ژﻧﺘﯿﮏ ﺟﻬﺖ ﺑﻬﯿﻨﻪﺳﺎزي ﺛﺎﺑﺖ ﻧﺸﺖ ﺟﻬﺖ دﺳﺘﯿﺎﺑﯽ ﺑﻪ ﻧﻤﺎﯾﻪ ﻣﺠﺬور ﮐﺴﮑﺎﻧﺖ در ﻣﺤﺪوده 10 ﺗﺎ 30 درﺟﻪ اﺳﺘﻔﺎده ﺷﺪه اﺳﺖ. ﺗﻄﺎﺑﻖ در ﻧﺘﺎﯾﺞ ﺷﺒﯿﻪﺳﺎزي و ﻧﺘﺎﯾﺞ اﻧﺪازهﮔﯿﺮي ﺷﺪه ﺑﯿﺎﻧﮕﺮ دﻗﺖ در روﻧﺪ ﻃﺮاﺣﯽ اﺳﺖ. روش ﭘﯿﺸﻨﻬﺎدي، ﻧﻤﺎﯾﻪ ﻣﻮردﻧﻈﺮ را ﺑﺎ رﯾﭙﻞ ﮐﻤﺘﺮ از 2 دﺳﯿﺒﻞ در ﻧﺎﺣﯿﻪ ﺗﻌﯿﯿﻦ ﺷﺪه و ﮔﻠﺒﺮگﻫﺎي ﮐﻨﺎري ﮐﻤﺘﺮ از 18- دﺳﯿﺒﻞ ﺑﻪدﺳﺖ ﻣﯽآورد ﮐﻪ آﻧﺘﻦ را ﺑﺮاي ﮐﺎرﺑﺮدﻫﺎي راداري ﻣﻨﺎﺳﺐ ﻣﯽﺳﺎزد.
چكيده لاتين :
In the modern era, the antennas with cosecant squared pattern play a significant role in radar applications. These applications are used to cover an airspace to search for targets and estimate their height. In this article, a method is proposed for the synthesis of cosecant squared pattern using leaky wave antenna. The principal mechanism in the leaky wave antennae is wave attenuation due to power leakage while the wave propagates through the structure. Thus, by controlling the leakage and phase constants along the length of the structure, one can synthesize the desired radiation patterns. We have used the genetic algorithm to optimize the leakage constant and obtain the desired cosecant squared pattern In the range of 10 to 30 degrees. Conformity in simulation results and measured results indicates accuracy in the design process. The proposed method obtains the desired pattern with a ripple of less than 2 dB in the designated area and side lobe level less than -18 dB, which makes the antenna suitable for radar applications.
عنوان نشريه :
روشهاي هوشمند در صنعت برق
