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1 2004

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Double balanced resistive mixer for mobile applications

Circa R., Pieńkowski D., Boeck G., Müller M.

Kwartalnik Elektroniki i Telekomunikacji

2004

Vol. 50, z. 4

553-565

We present a double balanced resistive mixer for mobile applications using a 0.35 um MOSFET-Technology. The mixer has been designed for direct conversion receivers with RF - and IF - frequency ranges of 2-3 GHz and DC to 50 MHz, respectively. Excellent performance has been achieved. Typical values are 6 dB conversion loss, 7 dB noise figure, 6.5 dBm 1 dB power compression, 16.5 dBm third order and 55 dBm second order intercept point, and 50 dB isolation between all ports. The mixer does not consume any DC-power and the needed LO-voltage amplitude is 1 V typical. No low frequency noise was detectable down to 10 kHz. We report on the design strategy and present simulated and measured results.