Development of Wideband Antennas
Wideband antennas for VLBI have been under development in NICT Kashima and the status of the project was reported in the poster session. An aim of this wideband observing system is Time and Frequency Transfer, the comparison of atomic clocks separated by long distances of several hundred or thousand kilometers with VLBI, as reported in “Broadband VLBI System GALA-V” by M. Sekido et al. This report focuses on our wideband antenna systems.
KeywordsVGOS VLBI Wideband
Development of wideband feeds were supported by the grant of Joint Development Research of National Astronomical Observatory of Japan (NAOJ) in 2013–2014.
- Kondo T, Takefuji K (2016) An algorithm of wideband bandwidth synthesis for geodetic VLBI. Radio Sci 51. https://doi.org/10.1002/2016RS006070
- Sekido M et al (2016) An overview of the Japanese GALA-V wideband VLBI system. In: Behrend D, Baver KD, Armstrong KL (eds) IVS 2016 general meeting proceedings new horizons with VGOS NASA/CP-2016-219016, pp 25–33Google Scholar
- Ujihara H (2017) Development of wideband feed for Kashima 34m antenna. Radio Sci 52. https://doi.org/10.1002/2016RS006071