DC-coupled IF stage design for a 900-MHz ISM receiver
R Harjani, J Kim, J Harvey - IEEE Journal of Solid-State …, 2003 - ieeexplore.ieee.org
R Harjani, J Kim, J Harvey
IEEE Journal of Solid-State Circuits, 2003•ieeexplore.ieee.orgThis paper presents a DC-coupled 900-MHz ISM band RF front-end for a short-range
wireless receiver. The front-end, fabricated in a 0.5-μm CMOS process, is intended as a test
vehicle to verify the proposed DC-coupled topology. In this topology, a low-frequency
feedback circuit suppresses the DC offset and low-frequency noise at the mixer output. The
DC-coupled topology is compared with traditional AC coupling. We show that there is a
tradeoff between bandwidth and midband loss in a fully integrated AC-coupled system. The …
wireless receiver. The front-end, fabricated in a 0.5-μm CMOS process, is intended as a test
vehicle to verify the proposed DC-coupled topology. In this topology, a low-frequency
feedback circuit suppresses the DC offset and low-frequency noise at the mixer output. The
DC-coupled topology is compared with traditional AC coupling. We show that there is a
tradeoff between bandwidth and midband loss in a fully integrated AC-coupled system. The …
This paper presents a DC-coupled 900-MHz ISM band RF front-end for a short-range wireless receiver. The front-end, fabricated in a 0.5-μm CMOS process, is intended as a test vehicle to verify the proposed DC-coupled topology. In this topology, a low-frequency feedback circuit suppresses the DC offset and low-frequency noise at the mixer output. The DC-coupled topology is compared with traditional AC coupling. We show that there is a tradeoff between bandwidth and midband loss in a fully integrated AC-coupled system. The proposed DC-coupling technique does not impose this tradeoff. The DC-coupled topology was verified via simulation and measurements from the test vehicle.
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