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- W2007160372 abstract "We have described a high power hybrid envelope elimination and restoration(H-EER) transmitter for IEEE 802.16e Mobile World Interoperability for Microwave Access(WiMAX) using an efficiency optimized power amplifier(PA). The PA has been designed to have maximum PAE at the important power generation , region using Nitronex 100-W PEP GaN HEMT. For the high power application, H-EER transmitter should be considered the regenerative oscillation problem due to the PA`s bias fluctuation effect and bias modulator stability issue. Therefore, the bias modulator for H-EER transmitter has been designed to suppress the regenerative oscillation. For the interlock experiment, the bias modulator has been built with the efficiency of 72% and peak output voltage of 30 V for the envelope signal with a PAPR of 8.5 dB. The H-EER transmitter for WiMAX application has been achieved a high PAE characteristic, 38.8 % at an output power of 41.25 dBm. By using digital predistortion(DPD) technique, the Relative Constellation Error (RCE) has been satisfied the specification of -34.5 dB. This is the first work at 2.655 GHz high power H-EER transmitter for WiMAX application." @default.
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- W2007160372 date "2008-08-31" @default.
- W2007160372 modified "2023-09-25" @default.
- W2007160372 title "Highly Efficient High Power Hybrid EER Transmitter for IEEE 802.16e Mobile WiMAX Application" @default.
- W2007160372 cites W2122383635 @default.
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- W2007160372 doi "https://doi.org/10.5515/kjkiees.2008.19.8.854" @default.
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