Logo Lindquist Systems Group


Our services and products include: DSP and filter design, information technology, stock market investing, intellectual property, and books and resource materials.

  • Design Services
  • Workshops & Seminars
  • On-Line DSP & Filter Services
  • Consulting
  • R&D
  • We specialize in DSP and filter design. This involves primarily digital and adaptive filters used in signal processing applications but also includes active filters and other filter types. We provide workshops and seminars in digital and adaptive filters, active filters, switched-capacitor filters, RLC passive filters, and ceramic and crystal filters. We also provide workshops in time-frequency analysis, wavelets and filter bank design, and other specialized areas. For quick and convenient responses, we provide on-line DSP and filter services. We can also work from our offices or yours.


  • SE Optimization & Link Building
  • Website Design
  • On-Line IT Services
  • Computer Hardware
  • Computer Software
  • Internet Support
  • Real-Time Video
  • IT Training
  • We provide a variety of information technology services. We specialize in search engine optimization (SEO) and link building. We also construct customized websites. We can modify existing computer hardware or build customized computer systems. Standard and customized software can be installed. Networking services are also provided. Our newest service is to provide real-time video capabilities. We provide training for all of our IT services. These services are available at your office, from our offices, or even on-line.

  • Stock Market Analysis
  • On-Line Stock Picks
  • We provide some very specific stock market investing services. We continuously perform stock market analysis to identify individual stocks that may have rapid appreciation in the short-term. We make these results available to the investor through on-line


  • Patent, Copyright, Trademark Portfolio Development & Strategy
  • On-Line Legal Research Services
  • Expert Consultants & Expert Witnesses
  • Licensing, Acquisitions, & Divestitures
  • Pre-Litigation Analyses & Opinions
  • Lawsuit Management
  • Medical Malpractice & Personal Injury
  • IP & Legal Seminars
  • We provide a variety of intellectual property services for patents, trademarks, copyrights, and trade secrets. Our complete patent services range from initial patent searches through patent licensing, infringement analysis, and lawsuit management. We provide the same services for trademarks, copyrights, and trade secrets. We also provide other legal services involving medical malpractice and personal injury resulting from nursing home neglect. Our expert consultants, expert witnesses, and lawyers can provide pre-litigation analyses and opinions. They can also manage lawsuits and litigation. For clients wanting training assistence for their IP and legal support staff, we provide seminars on all of our IP and legal services. Legal reference service is available online.


  • On-Line Book Order
  • Adaptive & Digital Filters
  • Signal Filtering
  • Papers
  • Theses & Dissertations
  • On-Line Publishing Information
  • We provide on-line ordering capability for Dr. Lindquist's signal processing and filtering textbooks. Also provided is a list of reference papers, theses, and dissertations to provide additional resource materials. On-line answers to book writing, editing, typesetting, printing, publishing, distribution, and other questions are available.

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