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Transactions of IAA RAS, вып. 50, 16–22 (2019)

Keywords: fiber optic transmission line, radio astronomy receiver, VLBI, group delay, phase calibration

Abstract

This paper describes the fiber optic lines which transmit microwave signals between the parts of a radio astronomy receiver. It emphasises the importance of the fiber optic transmission lines for the small receivers of compact radio telescopes in future. The following characteristics of our X-band receiver with the fiber optic transmission line have been measured: amplitude/frequency response, group delay, dynamic range, amplitude stability and delay stability. Allan variance has been calculated to compare the receiver stability with and without the fiber optic transmission line. Also, we have proposed and tested a method to calibrate changes in the fiber optic transmission line delay using reference frequency signals from another optical carrier. The results are compared to the delay measurements using a network vector analyser and picosecond pulse signal measurements in our broadband signal acquisition system.

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Yu. V. Vekshin, A. A. Tsaruk, A. V. Vytnov, M. B. Zotov, A. S. Karpichev, Y. Y. Khvostov. Fiber Optic Transmission Lines for the Radio Astronomy Receivers // Transactions of IAA RAS. — 2019. — Вып. 50. — P. 16–22. @article{vekshin2019, abstract = {This paper describes the fiber optic lines which transmit microwave signals between the parts of a radio astronomy receiver. It emphasises the importance of the fiber optic transmission lines for the small receivers of compact radio telescopes in future. The following characteristics of our X-band receiver with the fiber optic transmission line have been measured: amplitude/frequency response, group delay, dynamic range, amplitude stability and delay stability. Allan variance has been calculated to compare the receiver stability with and without the fiber optic transmission line. Also, we have proposed and tested a method to calibrate changes in the fiber optic transmission line delay using reference frequency signals from another optical carrier. The results are compared to the delay measurements using a network vector analyser and picosecond pulse signal measurements in our broadband signal acquisition system.}, author = {Yu.~V. Vekshin and A.~A. Tsaruk and A.~V. Vytnov and M.~B. Zotov and A.~S. Karpichev and Y.~Y. Khvostov}, doi = {10.32876/ApplAstron.50.16-22}, issue = {50}, journal = {Transactions of IAA RAS}, keyword = {fiber optic transmission line, radio astronomy receiver, VLBI, group delay, phase calibration}, pages = {16--22}, title = {Fiber Optic Transmission Lines for the Radio Astronomy Receivers}, url = {http://iaaras.ru/en/library/paper/1994/}, year = {2019} } TY - JOUR TI - Fiber Optic Transmission Lines for the Radio Astronomy Receivers AU - Vekshin, Yu. V. AU - Tsaruk, A. A. AU - Vytnov, A. V. AU - Zotov, M. B. AU - Karpichev, A. S. AU - Khvostov, Y. Y. PY - 2019 T2 - Transactions of IAA RAS IS - 50 SP - 16 AB - This paper describes the fiber optic lines which transmit microwave signals between the parts of a radio astronomy receiver. It emphasises the importance of the fiber optic transmission lines for the small receivers of compact radio telescopes in future. The following characteristics of our X-band receiver with the fiber optic transmission line have been measured: amplitude/frequency response, group delay, dynamic range, amplitude stability and delay stability. Allan variance has been calculated to compare the receiver stability with and without the fiber optic transmission line. Also, we have proposed and tested a method to calibrate changes in the fiber optic transmission line delay using reference frequency signals from another optical carrier. The results are compared to the delay measurements using a network vector analyser and picosecond pulse signal measurements in our broadband signal acquisition system. DO - 10.32876/ApplAstron.50.16-22 UR - http://iaaras.ru/en/library/paper/1994/ ER -