Title :
Design and implementation of 0.7 to 7 GHz broadband double-ridged horn antenna
Author :
Mehrdadian, Ali ; Fallahi, Hojjatollah ; Kaboli, Mohsen ; Mirtaheri, Seyyed Abdollah
Author_Institution :
Sch. of Electr. & Comput. Eng., Tarbiat Modares Univ., Tehran, Iran
Abstract :
In this paper, simulation and measurement results of 0.7-7 GHz double-ridged guide horn (DRGH) antenna with coaxial input feed section is presented. This antenna, due to the large frequency band required by standards, is appropriate to be used in electromagnetic compatibility (EMC) testing and antenna measurement as a transmitter. A step by step method for designing DRGH antenna is given. A suitable taper for the ridges in the horn is designed and its impedance variations along the horn are shown. In addition, a new structure for the electrical field probe in the feed section is introduced by which a shift-down of lower frequency to 0.7 GHz is achieved. A sensitivity analysis is done on the parameters of the proposed structure. Other parameters of the feed section are also investigated and optimized values are obtained. Finally, the proposed antenna has been fabricated and measurement results show good agreement with the simulation.
Keywords :
UHF antennas; antenna feeds; broadband antennas; electromagnetic compatibility; horn antennas; probes; ridge waveguides; EMC testing; broadband DRGH antenna design; double-ridged guide horn antenna implementation; electrical field probe; electromagnetic compatibility; feed section; frequency 0.7 GHz to 7 GHz; sensitivity analysis; transmitter antenna measurement; Antenna measurements; Broadband antennas; Cutoff frequency; Electromagnetic waveguides; Horn antennas; Impedance; Probes; Characteristic impedance; double ridged guide horn (DRGH); electromagnetic compatibility (EMC); impedance taper;
Conference_Titel :
Telecommunications (IST), 2014 7th International Symposium on
Conference_Location :
Tehran
Print_ISBN :
978-1-4799-5358-5
DOI :
10.1109/ISTEL.2014.7000707
