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A 24-GHz low-power fully integrated receiver with image-rejection using Rich-Transformer Direct-Stacked/Coupled technique

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4 Author(s)
Shiramizu, N. ; Central Res. Lab., Hitachi, Ltd., Tokyo, Japan ; Nakamura, T. ; Masuda, T. ; Washio, K.

We have developed a low-power, fully integrated receiver for 24-GHz ISM band wireless communication using a Rich-Transformer Direct-Stacked/Coupled (RT-DSC) technique. This technique makes it possible to reduce supply voltage and current without any performance degradation. The 24-GHz receiver circuit was fabricated using 0.18-μm SiGe BiCMOS technology. Receiver gain of 30 dB and noise figure (NF) of 5.6 dB are obtained at low power consumption of 21.5 mW. We utilized the synergistic effect of combining a narrow-band transformer and a notch filter to integrate the circuit's image rejection (IR) function. This resulted in our achieving power consumption only 30% of that reported previously.

Published in:

Radio Frequency Integrated Circuits Symposium (RFIC), 2010 IEEE

Date of Conference:

23-25 May 2010