https://scholars.lib.ntu.edu.tw/handle/123456789/147664
Title: | K-Band HBT and HEMT Monolithic Active Phase Shifters Using Vector Sum Method | Authors: | Chen, Po-Yu Huang, Tian-Wei HUEI WANG Wang, Yu-Chi Chen, Chung-Hsu Chao, Pane-Chane |
Keywords: | Active phase shifter;HBT;high electron-mobility transistor (HEMT);-band;monolithic microwave integrated circuit (MMIC);vector sum method | Issue Date: | May-2004 | Publisher: | Taipei:National Taiwan University Dept Chem Engn | Journal Volume: | 52 | Journal Issue: | 5 | Start page/Pages: | 1414-1424 | Source: | IEEE Transactions on Microwave Theory and Techniques | Abstract: | Two monolithic 3-bit active phase shifters using the vector sum method to -band frequencies are reported in this paper. They are separately implemented using commercial 6-in GaAs HBT and high electron-mobility transistor (HEMT) monolithic- microwave integrated-circuit (MMIC) foundry processes. The MMIC HBT active phase shifter demonstrates an average gain of 8.87 dB and a maximum phase error of 11 at 18 GHz, while the HEMT phase shifter has 3.85-dB average measured gain with 11 maximum phase error at 20 GHz. The 20-GHz operation frequency of this HEMT MMIC is the highest among all the reported active phase shifters. The analysis for gain deviation and phase error of the active phase shifter using the vector sum method due to the individual variable gain amplifiers is also presented. The theoretical analysis can predict the measured minimum root-mean-square phase error 4.7 within 1 accuracy. |
URI: | http://ntur.lib.ntu.edu.tw//handle/246246/200611150121329 https://www.scopus.com/inward/record.uri?eid=2-s2.0-2542448196&doi=10.1109%2fTMTT.2004.827010&partnerID=40&md5=47dcd145126fadfd3ddea08db049b65c |
Other Identifiers: | 246246/200611150121329 | DOI: | 10.1109/TMTT.2004.827010 |
Appears in Collections: | 電機工程學系 |
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