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- W2801662775 abstract "Wireless communication systems modulate supply voltage of RF-PAs to improve their efficiency and save power. The modulation waveform is derived from the envelope of RF signal by the baseband processor and converted to analog form through a DAC. An anti-aliasing filter within the supply modulator suppresses the image and quantization noise inherent in the envelope signal generated by the DAC to avoid contamination of PA output through its supply path. This paper presents a second order low-pass filter with a programmable bandwidth of 10–500MHz intended for an anti-aliasing filter of a supply modulator for PA complying with the air interface standards of mobile communication and wireless LAN that defines up-link bandwidth up to 160MHz. The filter structure exploits the finite bandwidth of an Op-amp and combines it with additional passive components to achieve second-order low-pass filtering characteristic. The maximal achievable bandwidth of the filter is equal to the GBW of the Op-amp, as such this structure has superior bandwidth over other conventional filters. Realized in 180nm mixed-signal CMOS process, the filter occupies a silicon area of 0.03 mm2 and consumes 2mW power." @default.
- W2801662775 created "2018-05-17" @default.
- W2801662775 creator A5003360183 @default.
- W2801662775 creator A5071353144 @default.
- W2801662775 date "2018-01-01" @default.
- W2801662775 modified "2023-10-16" @default.
- W2801662775 title "An Anti-Aliasing Filter with a Programmable Bandwidth of 10–500MHz for Supply Modulator" @default.
- W2801662775 cites W2152514613 @default.
- W2801662775 cites W2540105607 @default.
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- W2801662775 doi "https://doi.org/10.1109/iscas.2018.8350991" @default.
- W2801662775 hasPublicationYear "2018" @default.
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