Comparative Investigation of Half-mode SIW Cavity and Microstrip Hybrid AntennaUsing Different Patch Shapes

سال انتشار: 1393
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 648

فایل این مقاله در 8 صفحه با فرمت PDF قابل دریافت می باشد

استخراج به نرم افزارهای پژوهشی:

لینک ثابت به این مقاله:

شناسه ملی سند علمی:

JR_IJE-27-10_011

تاریخ نمایه سازی: 12 آبان 1393

چکیده مقاله:

A set of hybrid microstrip patch and semi-circular cavity antennas is introduced. The semi-circularcavity is implemented using Half-mode Substrate Integrated Waveguide (HMSIW) technique.Different shapes of the patch including rectangular, semi-circular and equilateral triangular are excitedusing proximity effect by the semi-circular SIW cavity at its TM010 mode. The proposed antennastructures have been excited using an inset 50 W microstrip line that leads to a facility of planar circuitintegration. The inherent limited bandwidth of the conventional microstrip patch antenna and SIWcavity-backed slot antenna is improved about 6 to 10% depending on the type of the patch using theproposed structure. Additionally, the proposed hybrid antenna enhanced the antenna gain by about 1.5dB in comparison with the half-mode cavity without patch. Meanwhile, the proposed hybrid antennasmade on a single-layer substrate has a low fabrication cost using printed circuit board (PCB) process.Three hybrid antennas are numerically and experimentally investigated. A comparative study betweenthe three different structures contains gain, bandwidth, Cross Polarization Level (CPL) and Front toBack Ratio (FBR) is presented

کلیدواژه ها:

Hybrid AntennaMicrostrip PatchSubstrate Integrated WaveguideCavity Backed Slot Antenna

نویسندگان

h Dashti

Electrical Engineering Department, Ferdowsi University of Mashhad, Mashhad, Iran

m.h Neshati

Electrical Engineering Department, Ferdowsi University of Mashhad, Mashhad, Iran