Switched-current analog programmable filter for software-defined radio

Shigehito Saigusa, Seong Kweon Kim, Hiroyuki Nakase, Suguru Kameda, Kazuo Tsubouchi

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


We have proposed a switched-current (SI) analog programmable finite-impulse-response (FIR) filter for software-defined radio. The programmable tap coefficient circuit for programmable operation of the SI FIR filter has also been proposed. The 4-bit-resolution tap coefficient circuit has been designed and fabricated using 0.35 μm complementary-metal-oxide-semiconductor technology. The current error between measured and calculated tap coefficient circuits has been less than 2%. The radio frequency/intermediate frequency SI band-pass filter has been designed using the measured tap coefficients. The designed SI FIR filter has a frequency response as well as calculated tap coefficients. The maximum operating frequency of the proposed SI FIR filter using 0.13 μm CMOS technology has been estimated to be greater than 10 GHz with circuit simulation.

Original languageEnglish
Pages (from-to)2185-2189
Number of pages5
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Issue number4 B
Publication statusPublished - 2003 Apr


  • Programmable RF-BPF
  • Programmable tap coefficient circuit
  • Software-defined radio
  • Switched-current circuit

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)


Dive into the research topics of 'Switched-current analog programmable filter for software-defined radio'. Together they form a unique fingerprint.

Cite this