Abstract

Increased demands for low cost of hardware, small size and low power consumption of equipment in cellular mobile communications have driven designers to resurrect the direct conversion receiver. Long abandoned in favor of the mature superheterodine receiver, the direct conversion receiver has emerged over the last decade. Direct conversion reception has several qualities which makes it very suitable for integration as well as multi-band multi-standard operation. This paper describes the characteristics of the direct conversion receiver as well as the inherent imperfections of the superheterodine receiver from the aspect of integration.

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