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JBE, vol. 22, no. 5, pp.665-670, September, 2017

DOI: https://doi.org/10.5909/JBE.2017.22.5.665

Broadband Active RF Attenuator with Maximun Attenuation of -110dBm

Junghoon Paik

C.A E-mail: jhpaik@daum.net

Abstract:

In this paper, we propose an implementation technology for an active attenuator with the maximum attenuation of 110dBm in the frequency band of 50MHz to 2,15GHz. It provides USB interface to connect to PC providing GUI that sets signal frequency and attenuation step of minimum 1dB. As it attenuates the input signal level down to 110dBm, circuit and equipment design technologies are applied to control both internal and external electro-magnetic noises.. Through the performance test, it is assured that it attenuates input signal level down to 110dBm for the input signal levels of 10 to 30dBm.

 



Keyword: attenuator, active, broadband, broadcasting signal, -110dBm

Reference:
[1] Denton Bramwell, “An RF Step Attenuator,” QST, Vol.79, No. 6, June 1995.
[2] Agilent RF & Microwave Attenuators, http:// www,agilent.com/find/ mta(accessed Aug.25, 2017).
[3] Attenuators Programmable and Manual Step, http:// www,agilent.com/ find/mta(accessed Aug.25, 2017).
[4] Keysight Technologies RF and Microwave Attenuators, http:// www,keysight.com/go/quality(accessed Aug.25, 2017).
[5] Sandia Report, Digital Attenuator Design, SAND2012-10095, Nov. 2012.
[6] HP Report, RF Programmable Step attenuator, HP Agilent 33321- 60037.
[7] DAB/DAB+/DMB, http://www.digidia.fr/digidia(accessed Aug.25, 2017).

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