A Compact, Single-Layer Substrate Integrated Waveguide (SIW) Cavity-Backed Active Antenna Oscillator

Francesco Giuppi*, Apostolos Georgiadis, Ana Collado, Maurizio Bozzi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

39 Citations (Scopus)


This letter presents the design and implementation of a single-layer, cavity-backed antenna oscillator based on substrate integrated waveguide (SIW) technology. The proposed antenna topology is particularly suitable for two-dimensional array configurations. The active circuit and the radiator are placed on opposite sides of the substrate and within the cavity area, allowing for a compact implementation. An X-band prototype was designed and fabricated, and it features frequency-tuning capability introduced by employing a varactor diode in the active circuit. The measurements showed 11.87-12.36 GHz tuning range, phase noise better than -107 dBc/Hz at 1 MHz offset, and 7% DC-to-RF conversion efficiency.

Original languageEnglish
Pages (from-to)431-433
Number of pages3
JournalIEEE Antennas and Wireless Propagation Letters
Publication statusPublished - 2012


  • Active antenna
  • antenna oscillator
  • cavity-backed antenna
  • substrate integrated waveguide SIW


Dive into the research topics of 'A Compact, Single-Layer Substrate Integrated Waveguide (SIW) Cavity-Backed Active Antenna Oscillator'. Together they form a unique fingerprint.

Cite this