A modal composite transmission line with a transition structure
A transitional structure and transmission line technology, applied in the direction of waveguide, circuit, electrical components, etc., can solve the problems of single, difficult processing, no feeding structure, etc., to achieve the effect of improving crosstalk, reducing processing cost, and widening relative bandwidth
Pending Publication Date: 2018-12-18
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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However, the relevant literature does not propose an effective feed structure that excites the two modes separately
(Y-J Li and J-H Wang, "Dual-Band Leaky-Wave Antenna Based on Dual-Mode Composite Microstrip Line for Microwave and Millimeter-Wave Applications," IEEE Trans. Antennas Propag., vol.66, no.4, pp.1660–1667 ,Apr.2018.) The above two modes of composite transmission lines are multi-layer structures, which are more difficult to process than single-layer structures, and both modes require a separate feed structure
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[0016] Such as figure 1 As shown in the structural diagram of a mode composite transmission line with a transition structure, a mode composite transmission line with a transition structure includes a microstrip conductor 11, a microstrip floor 12, a substrate integrated waveguide 2, and conductor planes on both sides 3. Interdigitated capacitor transition structure 4, microstrip gradient line transition structure 5 and dielectric substrate 6, the mode composite transmission line with transition structure adopts a low-loss Rogers 5880 substrate with a thickness of 0.508mm, and the microstrip conductor 11 is located at The upper surface of the dielectric substrate 6; the microstrip line floor 12 is located on the lower surface of the dielectric substrate 6; the conductor planes 3 on both sides are located on both sides of the substrate integrated waveguide 2 on the lower surface of the dielectric substrate 6 and are not in direct contact with the substrate integrated waveguide 2 ...
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The invention discloses a mode composite transmission line with a transition structure, comprising a microstrip line conductor, a microstrip line floor, a substrate integrated waveguide, two side conductor planes, an interdigital capacitor transition structure, a microstrip gradual line transition structure and a dielectric substrate. The invention can be used in microwave and millimeter wave broadband and multi-frequency systems, and has the advantages that only a single-layer substrate is required to realize low cost, the transition structure has wide relative bandwidth, and the two modes can work under the condition of large frequency difference, and the isolation degree between the low-frequency and the high-frequency modes is high and the crosstalk is small due to the isolation between the transmission modes due to the physical structure.
Description
technical field [0001] The invention belongs to the technical field of microwave and millimeter wave transmission lines, and relates to a mode composite transmission line. Background technique [0002] The mode compound transmission line is a new type of transmission line structure composed of multiple transmission line structures, with structure multiplexing and mode compounding. Compared with multiple transmission lines used alone, it has the characteristics of miniaturization and multi-mode transmission, so it is especially suitable for miniaturization, multi-band, and multi-functional microwave systems. However, since the modal composite transmission line is composed of multiple transmission lines, solving the mutual coupling between different types of transmission lines and the feeding of various transmission lines will be the difficulty and key to the design of the modal composite transmission line. Therefore, it is very valuable to design a mode composite transmissio...
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Login to View More IPC IPC(8): H01P3/00
CPCH01P3/00Y02D30/70
Inventor 林先其苏一洪于家伟樊勇
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA