Aji Katon Surya Primary Author 1520402001 Additional Author mixed material bibliography Pekanbaru Politeknik Caltex Riau 2018

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xi, 45 hlm,; 21 cm Radio communication technology is very demanding for a variety of antenas that are easy to make, low prices, and can also work as needed. In this study cross yagi antenas that operate on dual band frequencies, namely VHF frequency 145,880 MHz (uplink) and 435,880 MHz (downlink) to support radio communication technology, especially voice repeater on satellites. The type of material used to make this antena is aluminum ALKAN type with an external thickness of 12.7 mm, 9 mm and 6 mm. The purpose of this final project is to design and create dual band yagi antenas on VHF and UHF frequencies to obtain return loss parameters VSWR 5 dB, and directional polaradiation. The measurement results from this study indicate that the antena has been successfully operating at frequencies of 145,880 MHz and 435,880 MHz, has return loss values --21.77 dB and -17.21dB, with VSWR 1.17 and 1.31, and frequency gain 145,880 at 15.04 dBi and frequency 435,880 at 17.46 dB, with directional polaradiation. Keywords: Yagi Antena, Dual band Antena, VHF, UHF PA Teknik Telekomunikasi Politeknik Caltex Riau Politeknik Caltex Riau PA TT KI-00011A Perpustakaan PCR PA TT 11634 2019-12-26 16:04:38 2019-12-26 16:04:38 machine generated