1 research outputs found
Sigma Delta (ΣΔ) Architecture Integration with Digital Pre-Distortion to Enhance Optimal Switch Mode Power Amplification (OSMPA) in FEMTO Cell Transceiver Design
The work presented in this paper aims to develop an
optimized switch mode power amplifier (OSMPA) using existing
techniques in sigma delta (ΣΔ) architecture that will lead to the
design of low cost, low power consumption transceivers with
flexible frequency transmission. This design will allow all digital
tunability and eliminate the need for cascaded analog components.
The implementation will improve the output spectrum using the
Cartesian ΣΔ structure by removing unwanted spectral components
when the carrier frequency of the transmitted signal is changed. In
addition, the new approach will improve the bandwidth and carrier
frequency range by removing the noise and distortion products.
Simulation results show that the new approach enables operation in
the cellular frequency bandwidth with improved spectral efficiency