Design of frequency invariant beamformer for broadband arrays

W. Liu, S. Weiss

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Abstract

A simple method for the design of a class of arrays with frequency invariant beam patterns is proposed. Starting from the desired frequency invariant beam pattern of an n-D array, the proposed method uses a series of substitutions and an n-D inverse Fourier transform to obtain the desired frequency responses of the filters following each sensor. Given their desired frequency responses, these filters can be realized by either an analogue filter or a digital filter. Hence the proposed method can cover the design of broadband arrays with either analogue signals or discrete signals. Two design examples are provided, with one for a linear array and one for a planar array.
Original languageEnglish
Pages364-367
Number of pages4
DOIs
Publication statusPublished - 11 Jun 2007
EventInternational Workshop on Antenna Technology - Cambridge, United Kingdom
Duration: 21 Mar 200723 Mar 2007

Workshop

WorkshopInternational Workshop on Antenna Technology
Abbreviated titleiWAT 2007
CountryUnited Kingdom
CityCambridge
Period21/03/0723/03/07

Keywords

  • fourier transforms
  • array signal processing
  • antenna radiation patterns
  • broadband antennas
  • digital filters

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    Liu, W., & Weiss, S. (2007). Design of frequency invariant beamformer for broadband arrays. 364-367. Paper presented at International Workshop on Antenna Technology, Cambridge, United Kingdom. https://doi.org/10.1109/IWAT.2007.370150