Skip to Main Content
 

Global Search Box

 
 
 
 

Files

File List


osu1268237958.pdf (975.57 KB)

ETD Abstract Container

Abstract Header

Multi-Harmonic Broadband Measurement with an Large-Signal Network Analyzer

Youngseo, Ko
http://rave.ohiolink.edu/etdc/view?acc_num=osu1268237958

Abstract Details

2010, Master of Science, Ohio State University, Electrical and Computer Engineering.
A new testbed was developed with an LSNA to perform multi-harmonic broadband measurements for periodically modulated signals with bandwidth exceeding the IF receiver bandwidth of the LSNA. This testbed is intended for characterizing PAs using periodically modulated (multitone) signals often referred as multisines. Multisine signals can be synthesized to approximate the CCDF and PAPR of digitally modulated signals such as WiMAX and LTE (Long Term Evolution). In the experiment conducted a multisine with 13 tones distributed over 15 MHz was used which provided a PAPR of 6 dB. Using this excitation, the nonlinear response of a 80 W Doherty GaN PA at 2.16 GHz was characterized over a 80 MHz bandwidth. Inband signal distortion and spectral regrowth were recorded in the 63 tones measurement over the 80 MHz measurement bandwidth targeted at both the fundamental and second harmonic. This increased measurement bandwidth enables one to characterize the nonlinear vector response of the PA in its 3rd and 5th order inter-modulation bands at the fundamental frequency. The broadband vector results at the second harmonic obtained in the same measurements provides additional invaluable information for the multi-harmonic optimization of the efficiency of the Doherty PA under test. It is believed that the multi-harmonic broadband vector characterization capabilities provided by the reported testbed should assist with the development and verification of multi-harmonic behavioral models for wideband modulated signals.
Patrick Roblin (Advisor)
Steven Bibyk (Committee Member)
Waleed Khalil (Committee Member)
64 p.
Electrical Engineering
multi-harmonic; broadband mesurement; large-signal network analyzer (LSNA)

Recommended Citations

Citations

  • Youngseo, K. (2010). Multi-Harmonic Broadband Measurement with an Large-Signal Network Analyzer [Master's thesis, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1268237958

    APA Style (7th edition)

  • Youngseo, Ko. Multi-Harmonic Broadband Measurement with an Large-Signal Network Analyzer. 2010. Ohio State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1268237958.

    MLA Style (8th edition)

  • Youngseo, Ko. "Multi-Harmonic Broadband Measurement with an Large-Signal Network Analyzer." Master's thesis, Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1268237958

    Chicago Manual of Style (17th edition)

osu1268237958
973
© 2010, all rights reserved.
This open access ETD is published by The Ohio State University and OhioLINK.