شماره ركورد كنفرانس :
3364
عنوان مقاله :
Low Cost USB-based RF Power Meter for 50MHz-9GHz Frequency Band
Author/Authors :
L. Ghanbari Engineering Department - Imam Khomeini International University, Qazvin , S. Jarchi Engineering Department - Imam Khomeini International University, Qazvin , M. Farajpour Mechanical Engineering Department - Amirkabir University of Technology, Tehran , M. Ahmadi Najafabadi Mechanical Engineering Department - Amirkabir University of Technology, Tehran
كليدواژه :
true RMS power detector , USB-based devices , RF Power meter
عنوان كنفرانس :
كنفرانس بين المللي پژوهش هاي نوين در علوم مهندسي
چكيده لاتين :
This paper presents the design and fabrication of a USB-based RF power meter that measures RF signals from 50MHz to 9GHz by true RMS responding power detector ADL5902 and can accept inputs from −62 dBm to at least +3 dBm with large crest factors, such as GSM, CDMA, W-CDMA, TD-SCDMA, WiMAX, and LTE modulated signals. The required signals are provided by atxmega128 microcontroller and the output of ADL5902 is measured and transferred on the USB port. An application is written with Visual Basic which can display the RF power. Using the power meter application we can calibrate the device. The suggested power meter is fabricated and tested that presents the expected functionality. The proposed power meter has wide dynamic range of 65dBm. For measuring higher power levels, we can set the input attenuator. The design is very low cost and flexible. The proposed very low cost power meter can be used in FM, UHF, VHF, GSM, LTE, and other applications.
