Array of Laminated Waveguides for Implementation in LTCC Technology


  1. Clénet, M.
  2. Antar, Y.M.M.
  3. Lee, D.
Corporate Authors
Defence R&D Canada - Ottawa, Ottawa ONT (CAN);Royal Military Coll of Canada, Kingston ONT (CAN);Communications Research Centre, Ottawa ONT (CAN)
This document reports on the study of a five-element array prototype developed for communications in K-band and suitable for LTCC technology. The radiating element is an open waveguide realised in laminated technology. A novel coaxial-to-waveguide transition has also been designed as feed port for measuring the prototypes. The design, analysis, fabrication process and measurement of this antenna element were described in a previous report. To summarize, the element exhibits a 1 GHz bandwidth around a 20.7 GHz centre frequency. The element radiation pattern indicates a gain of 2.7 dBi. This new antenna is suitable for brick architecture array configuration. In an array configuration the input impedance of each radiating element is slightly perturbed by the proximity of the other antennas. The mutual coupling between the elements, however, remains below –20 dB across the bandwidth. The simulated boresight radiation pattern of a five-element array is stable over the bandwidth and the gain reaches 9.2 dBi at 20.7 GHz. These results are confirmed by the measurement. The scanned radiation patterns obtained by simulation show a good behaviour of this array for scan angles up to 50°. The measured radiation patterns for several scan angles demonstrate the scanning capability of this array.

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Report Number
DRDC-OTTAWA-TM-2006-227 — Technical Memorandum
Date of publication
01 Nov 2006
Number of Pages

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