Tunable Blocker-Tolerant On-Chip Radio-Frequency Front-End Filter With Dual Adaptive Transmission Zeros for Software-Defined Radio Applications

@article{Hasan2016TunableBO,
  title={Tunable Blocker-Tolerant On-Chip Radio-Frequency Front-End Filter With Dual Adaptive Transmission Zeros for Software-Defined Radio Applications},
  author={M. Naimul Hasan and Qun Jane Gu and Xiaoguang Leo Liu},
  journal={IEEE Transactions on Microwave Theory and Techniques},
  year={2016},
  volume={64},
  pages={4419-4433}
}
This paper presents a tunable active bandpass filter (BPF) with adjustable transmission zeros (TZs) close to the passband for software-defined radio (SDR) applications. The RF front-end frequency selectivity is enhanced by the creation of TZs that also improve the out-of-band (OOB) input-referred third-order intercept point (IIP3). The filter is based on two-path signal cancellation and consists of a tunable BPF in parallel with two tunable bandstop filters. This combination ensures the correct… CONTINUE READING