Journal ArticleDOI
Extending the bandwidth of low-noise microwave amplifier through digital assist
D. Stewart,Carlos E. Saavedra +1 more
TLDR
The 3 dB bandwidth of a low-noise amplifier (LNA), which has a multi-stage topology and the gate bias voltages are dynamically optimised in real-time to obtain the best gain and noise figure as a function of the signal input frequency.Abstract:
The 3 dB bandwidth of a low-noise amplifier (LNA) is increased by 23% from a range of 1–6.7 GHz to a range of 1–8.25 GHz through digital assist. The LNA has a multi-stage topology and the gate bias voltages are dynamically optimised in real-time to obtain the best gain and noise figure as a function of the signal input frequency.read more
Citations
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Journal ArticleDOI
A LNA-merged RF front-end with digitally assisted technique for gain flatness and input-match compensation
TL;DR: Results show that DA broaden the RF bandwidth of the proposed RFE and improve the conversion gain flatness and input-match compensation factor.
Journal ArticleDOI
Digitally assisted CMOS mixer with tight conversion-gain flatness
TL;DR: In this article, a microcontroller is used to find the optimal bias point of the mixer that produces the desired conversion gain flatness, which can be used to improve the performance of a CMOS mixer.
References
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Journal ArticleDOI
An ultrawideband CMOS low-noise amplifier for 3.1-10.6-GHz wireless receivers
TL;DR: An ultrawideband 3.1-10.6-GHz low-noise amplifier employing an input three-section band-pass Chebyshev filter using a 0.18-/spl mu/m CMOS process achieves a power gain of 9.3 dB with an input match of -10 dB over the band.
Proceedings ArticleDOI
Noise cancelling in wideband CMOS LNAs
TL;DR: In this article, a noise-cancelling technique in a wideband LNA achieves low noise figure (NF) and source impedance matching without global feedback, and the 0.25 μm LNA provides <2.4 dB NF from 0.01-2 GHz, total voltage gain is 13.7 dB, -3 dB bandwidth is 0.1-1.6 GHz, S/sub 12/ is <-36 dB, and s/sub 11/ is −10 dB.
Journal ArticleDOI
A 10-Gb/s Inductorless CMOS Limiting Amplifier With Third-Order Interleaving Active Feedback
TL;DR: By employing the third-order interleaving active feedback, the bandwidth of the proposed circuit can be effectively enhanced while maintaining a suppressed gain peaking within the frequency band.
Journal ArticleDOI
A 5-GHz 20-dBm Power Amplifier With Digitally Assisted AM-PM Correction in a 90-nm CMOS Process
Yorgos Palaskas,Stewart S. Taylor,Stefano Pellerano,Ian Rippke,R. Bishop,Ashoke Ravi,Hasnain Lakdawala,Krishnamurthy Soumyanath +7 more
TL;DR: In this paper, an integrated CMOS power amplifier and a technique for correcting AM-PM distortion in power amplifiers is presented, where a varactor is controlled by the amplitude of the IQ baseband data in a feed forward fashion.
Journal ArticleDOI
Digitally-Controlled Polar Transmitter Using a Watt-Class Current-Mode Class-D CMOS Power Amplifier and Guanella Reverse Balun for Handset Applications
TL;DR: A digitally-controlled polar transmitter with a watt-class CMOS power amplifier is demonstrated, implemented in a 0.15 μm RF CMOS process and WCDMA HPSK modulation was demonstrated using a pulse pattern generator-based measurement bench.