资料介绍
The ISL5239 Pre-Distortion Linearizer (PDL) is a full featured
component for Power Amplifier (PA) linearization to improve PA
power efficiency and reduce PA cost.
The Radio Frequency (RF) PA is one of the most expensive and
power-consuming devices in any wireless communication
system. The ideal RF PA would have an entirely linear
relationship between input and output, expressed as a simple
gain which applies at all power levels. Unfortunately, realizable
RF amplifiers are not completely linear and the use of predistortion
techniques allows the substitution of lower cost/power
PA’s for higher cost/power PA’s.
The ISL5239 pre-distortion linearizer enables the linearization of
less expensive PA’s to provide more efficient operation closer to
saturation. This provides the benefit of improved linearity and
efficiency, while reducing PA cost and operational expense.
The ISL5239 features a 125MHz pre-distortion bandwidth
capable of full 5th order intermodulation correction for signal
bandwidths up to 20MHz. This bandwidth is particularly well
suited for 3G cellular deployments of UMTS and CDMA2000.
The device also corrects for PA memory effects that limit predistortion
performance including self heating.
component for Power Amplifier (PA) linearization to improve PA
power efficiency and reduce PA cost.
The Radio Frequency (RF) PA is one of the most expensive and
power-consuming devices in any wireless communication
system. The ideal RF PA would have an entirely linear
relationship between input and output, expressed as a simple
gain which applies at all power levels. Unfortunately, realizable
RF amplifiers are not completely linear and the use of predistortion
techniques allows the substitution of lower cost/power
PA’s for higher cost/power PA’s.
The ISL5239 pre-distortion linearizer enables the linearization of
less expensive PA’s to provide more efficient operation closer to
saturation. This provides the benefit of improved linearity and
efficiency, while reducing PA cost and operational expense.
The ISL5239 features a 125MHz pre-distortion bandwidth
capable of full 5th order intermodulation correction for signal
bandwidths up to 20MHz. This bandwidth is particularly well
suited for 3G cellular deployments of UMTS and CDMA2000.
The device also corrects for PA memory effects that limit predistortion
performance including self heating.
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