Abstract
This paper describes technique for the design of Substrate Integrated Waveguide (SIW) filter using multilayer Low Temperature Co-fired Ceramic (LTCC) technology at Q-band frequency region. The design is based on a circular cavity structure operating at TM 010 mode. A single order filter is chosen to demonstrate the feasibility of using in-house LTCC fabrication technology. Measured insertion loss of −1.954 dB and passband return loss of more than 10 dB at 38 GHz were achieved. Good filtering response is observed which shows that SIW filter using LTCC technology is a suitable candidate for implementation of filtering devices for a millimeter-wave uplink/downlink Remote Antenna Unit for a Radio-over-Fibre (RoF) system.
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