Direct Quadrature Modulator Extends Dynamic Range of Wireless Transmitters

摘要

A new low frequency direct conversion quadrature modulator from Linear Technology Corporation offers impressive linearity performance and low noise to enhance the dynamic range performance of base station transmitters. The LTC5598 offers best-in-class +27.7 dBm OIP3 (Output 3rd Order Intercept) and +74 dBm OIP2 (Output 2nd Order Intercept) performance. In addition, the device has a very good low noise floor of -160 dBm/Hz at a +5 dBm output level.