| At present, Multi-channel receiver module is more and more important in the millimeter-wave systems, the main direction of which is amplitude-phase-matched, stability and miniaturization. Low Temperature Co-fired Ceramic (LTCC) technology is a highly integrated and high-performance packaging technology. Passive components can be embedded in LTCC substrate, which provides an effective way for Multi-channel receiver module miniaturized.In this paper, a miniaturized multi-channel receiver module is designed by LTCC, which is used in Ka-wave band.Firstly, the analysis and architecture of the single-channel receiver chain and the local oscillator chian are proposed based on technical indicators and practical application. Then we propose the design plan of multi-channel receiver module and demonstrate the important indicators, such as gain, spurious. In order to achieve miniaturization of the receiver module, passive components required to be buried in the substrate. Based on this conceivability and LTCC technology, some passive components like power divider, filter, waveguide-microstrip transition are designed in this paper. For the multi-layer wiring of LTCC, a vertical interconnect structure is proposed. And the feasibility of interconnection of module’s external interface is analyzed. Based on the consistency of channel phase and amplitude, the cavity and LTCC substrate are designed and processed. The final step is testing.The Dimension of the millimeter-wave miniaturized multi-channel receiver module is55mm×39mm×15mm. The testing results are as follows:the phase consistency is less than150, the magnitude consistency is less than2dB. In500MHz bandwidth, the gain flatness is less than2.5dB. The channel gain is more than32dB, the input range of the module is-71dBm-～-10dBm. |
