CESRA Workshop 2019

July 8th - 12th, 2019

Telegrafenberg, Potsdam, Germany


the introduce about VHF antenna array of Yunnan Observatories

Shaojie Guo, Yunnan Observatories´╝îChinese Academy of Science

The VHF antenna array is consist of antenna, receiver, and data acquisition board. The antenna is designed to be transformation of half-wave dipole, which has four aluminium arms. The size of arm is 33cm*200cm, which can realize wider bandwidth compare to a single metal line. Receive can be operated in the frequency range from 55-65MHz. The gain and dynamic range of receiver are 65dB and 50 dB respectively. Data acquisition board uses the AD6657A-EBZ board whose sampling frequency, SFDR and quantization bits are 200MHz, 60dB and 12bits respectively. The AD board is controlled by XC4VFX20 which is belong to the Virtex4-FX family.