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http://dx.doi.org/10.5515/KJKIEES.2007.18.2.183

High-Power Cartesian Feedback Transmitter Design for 860 MHz Band  

Kim, Min-Su (School of Information and Communication Engineering, Sungkyunkwan University)
Cho, Han-Jin (School of Information and Communication Engineering, Sungkyunkwan University)
Ahn, Gun-Hyun (School of Information and Communication Engineering, Sungkyunkwan University)
Jung, Sung-Chan (School of Information and Communication Engineering, Sungkyunkwan University)
Park, Hyun-Chul (School of Information and Communication Engineering, Sungkyunkwan University)
Van, Ju-Ho (School of Information and Communication Engineering, Sungkyunkwan University)
Jeong, Jong-Hyuk (School of Information and Communication Engineering, Sungkyunkwan University)
Kwon, Sung-Wook (School of Information and Communication Engineering, Sungkyunkwan University)
Lim, Kyung-Hoon (School of Information and Communication Engineering, Sungkyunkwan University)
Song, Sung-Chan (Samsung Thales Co., Ltd.)
Klm, Jae-Young (Samsung Thales Co., Ltd.)
Yang, Youn-Goo (School of Information and Communication Engineering, Sungkyunkwan University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.18, no.2, 2007 , pp. 183-190 More about this Journal
Abstract
This paper presents the design of 860 MHz band transmitter for improving power amplifier's linearity using Cartesian feedback method. For eliminating the effects of gain, phase mis-match, and DC offset, we estimate the property variations using ADS software. The implemented Cartesian feedback transmitter exhibits IMD3 of -54 dBc at an output power of 43 dBm and this result shows that the linearity is improved for 22.4 dB, compared with the test of the power amplifier without Cartesian feedback system. Thus, we verify that the proposed Cartesian feedback transmitter can be applied to narrow-band transmitter systems.
Keywords
Cartesian Feedback Transmitter; Power Amplifier; Linearity; IMD3(3-rd Inter-Modulation Distortion);
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