D-band LNA Chip Packaging Technology Based on LTCC Process
摘要
This study introduces a low-temperature co-fired ceramic (LTCC) packaging structure for D-band LNA chips and an LTCC antenna implemented based on this structure. The LTCC packaging structure includes a dielectric waveguide composed of via arrays, probes made of metal patches and bonding wires, and an electromagnetic bandgap (EBG) structure laid to suppress resonance. By adjusting the dimensions of the bonding wires and metal patches, the signal transmission performance from GSG to the dielectric waveguide can be effectively improved. The LTCC antenna incorporates a variable resistor filter and an LTCC horn structure at the dielectric waveguide. Through theoretical analysis and full-wave simulations, this paper explains the working principles of the LTCC packaging and antenna, along with their design processes. Simulation results show that the LTCC packaging achieves an average insertion loss below 0.5dB and return loss better than 15dB in the D-band, while the LTCC antenna demonstrates a return loss below 10dB with an average gain of 9.45dBi in the same band. This study proves the feasibility of applying this technology to advanced wireless systems in the D-band.