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A Dual Band Directional Coupler with Feedback Compensation Using Diplexer Structure  

Kim Ki-Joong (Central R&D Institute, Samsung Electro-Mechanics Co., LTD)
Park Ja-Young (Central R&D Institute, Samsung Electro-Mechanics Co., LTD)
Jeong Young-Hak (Central R&D Institute, Samsung Electro-Mechanics Co., LTD)
Bae Hyo-Gun (Central R&D Institute, Samsung Electro-Mechanics Co., LTD)
Kim Nam-Heung (Central R&D Institute, Samsung Electro-Mechanics Co., LTD)
Kim Hak-Sun (Central R&D Institute, Samsung Electro-Mechanics Co., LTD)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.16, no.8, 2005 , pp. 783-789 More about this Journal
Abstract
In this paper, a novel design and implementation of a dual-band directional coupler based on RF IPD(Integrated Passive Device)-on-glass technology is proposed, which can be adopted in GSM/GPRS cellular phones for closed loop power control at the output of the power amplifier. The proposed coupler has a compensation capacitor to improve the directivity, and was designed using a new diplexing structure to minimize the cross-band isolation.
Keywords
Directional Coupler; Diplexer; Closed Loop; IPD;
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  • Reference
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