A microwave/Millimeter Wave Compact and Broadband integrated Transition of Air-filled Waveguide to Laminated Waveguide
A novel compact and broadband integrated transition between a laminated waveguide and an air-filled rectangular operating in Ka band is proposed. The transition consists of side metal walls, which closely surround the input aperture of air-filled waveguide in a layered substrate, such as that of low-temperature co-fired ceramic (LTCC), and four interior stubs perpendicularly connected to the side walls. These stubs divide the interior of the transition into three0sub-zones, each of which can be regarded as triangular resonant cavities. The TE-10like modes in resonators are excited in phase. A three-pole filter equivalent circuit model is employed to interpret the working mechanism and to predict the performance of the transition. A back-to-back prototype of the proposed transition is designed and fabricated. Good agreement of the measured and simulated results is obtained. The measured result shows that the insertion loss of better than 0.35dB from 34.8 to .37.8GHz can be achieved. Its compactness and integrality with an integrated module make the novel polarized (CP) Ka band microstrip antenna array is demonstrated, showing great potential in future millimeter wave integrated system on package modules.
11/ENG/425
Inventor(s): Professor Ke Li WU, Department of Electronic Engineering Licensing Status: Available
香港
