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A novel 2–18 GHz double‐ridged horn antenna with simple structure
Author(s) -
Yue Zhenzhen,
Liu Ying,
Gong Shuxi
Publication year - 2018
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.31248
Subject(s) - radiation pattern , antenna (radio) , antenna measurement , frequency band , feed horn , standing wave ratio , engineering , horn antenna , radio spectrum , acoustics , electronic engineering , electrical engineering , slot antenna , telecommunications , physics , periscope antenna , microstrip antenna
Abstract A 2–18 GHz double‐ridged horn antenna (DRHA) with simple structure is proposed in this paper. Previous studies have found that the radiation patterns of traditional DRHA cannot keep good characteristics in the whole frequency band. The main lobes would split and the gain would seriously decline when frequency is above 12 GHz. And the gaps between the internal structure, especially those in the feeding section formed in design and machining process, could cause serious effect on the performance of antenna. To overcome these problems, the Bézier curve instead of the exponential type curve and simplified feeding section that eliminates the wedges are utilized to design the DRHA. The problem that caused by the gaps in the feeding section is solved by extending the end of ridge into the short circuit board and eliminating the wages. The proposed antenna can achieve good radiation characteristics over the whole frequency band from 2 to 18 GHz. The VSWR is less than 2 and the gain is stable in the high frequency band. The proposed antenna is suitable for electromagnetic compatibility testing and the feed for reflector antennas.