Direct Baseband I-Q Regeneration Method for Five-Port Receivers Improving DC-offset and Second-Order Intermodulation Distortion Rejection

Abstract :

Six/Five-port architecture has advantages compared to conventional receiver architectures, especially for high frequencies and high data rate applications. However, it requires two/one additional baseband outputs and a calibration process to recover the original signal. While this problem is resolved in conventional six-port configurations, a solution is needed for five-port architectures. We propose an I/Q regeneration method based on the use of a simple analog circuit, eliminating one baseband output. The structure of this circuit derives from a mathematical formulation, which is presented in this paper. The validity of the method has been experimentally proved in a five-port receiver prototype. In addition, its capacity to reduce the DC-offset and second-order intermodulation distortion (IMD2) has been demonstrated.

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Journal articles
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Submitted on : Friday, September 13, 2019 - 3:35:18 PM
Last modification on : Thursday, October 17, 2019 - 12:37:01 PM

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  • HAL Id : hal-02286303, version 1

Citation

Cristina de la Morena-Álvarez-Palencia, Kaïs Mabrouk, Bernard Huyart, Amadou Mbaye, Mateo Burgos Garcia. Direct Baseband I-Q Regeneration Method for Five-Port Receivers Improving DC-offset and Second-Order Intermodulation Distortion Rejection. IEEE Trans. on Microwave Theory & Techniques, 2012, 60 (8), pp.2634-2643. ⟨hal-02286303⟩

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