Low cost microwave oscillator using substrate integrated waveguide cavity

By Y. Cassivi, Ke Wu. IEEE Microwave and Wireless Components Letters, 2003

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Current and Future Research Trends in Substrate Integrated Waveguide Technology (2009, background): “In particular, a feedback oscillator was proposed in [27]: it operates at 12 GHz and is based on an SIW cavity that acts as a frequency selector as well as a feedback-coupling device.”
Eight-Way Substrate Integrated Waveguide Power Divider With Low Insertion Loss (2008, background): “Recently, a new concept of a substrate integrated waveguide (SIW) technique has been proposed, and a number of microwave and millimeter-wave components have already been studied and realized including numerous transitions, filters, antennas , and oscillators [1]–[10].”
Modeling of Conductor, Dielectric, and Radiation Losses in Substrate Integrated Waveguide by the Boundary Integral-Resonant Mode Expansion Method (2008, methodology): “…waveguide [4] for feeding networks in antenna arrays, substrate integrated waveguide technology has been applied to several microwave and millimeter-wave components, including post filters [5], cavity filters [6], directional couplers [7], oscillators [8], slot array antennas [9], six-port…”
The substrate integrated circuits - a new concept for high-frequency electronics and optoelectronics (2003, methodology): “An SIW resonator was used to design an oscillator at 12GHz [23].”