Multifunctional radio frequency device integrating dual-polarized patch antenna and filter

Abstract

The invention discloses a multifunctional radio frequency device integrating a dual-polarized patch antenna and a filter, and the device comprises three dielectric plates, wherein a parasitic patch isarranged on the upper surface of the top dielectric substrate; the upper surface of the middle dielectric substrate is provided with a radiation patch and the lower surface of the middle dielectric substrate is provided with a cross-shaped feeder line; the tail end of the cross-shaped feeder line is connected with the radiation patch; the upper surface of the bottom dielectric substrate is provided with a floor, and the lower surface of the bottom dielectric substrate is provided with a short-circuit branch line and a matching network; the short-circuit branch line and the cross-shaped feederline form a band-pass filter; the parasitic patch, the radiation patch and the cross-shaped feeder line form a dual-polarized antenna. The dual-polarized antenna has two working modes: the dual-polarized antenna and the band-pass filter, the working modes can be adjusted as required without changing the circuit structure, and the two working modes are independent.

Description

technical field [0001] The invention relates to the field of antenna research in the field of wireless mobile communication, in particular to a multifunctional radio frequency device in which a dual-polarization patch antenna and a filter are integrated. Background technique [0002] With the research of the next generation of intelligent systems and automation equipment, more and more attention has been paid to reconfigurable devices. Reconfigurable devices can be used in combination with programmable components to realize a controllable multi-mode working mode, which can not only realize multiple functions of the system, but also reduce the number of system components used and realize the effect of miniaturization of the system. [0003] Filters and antennas are two important components of the RF front-end, and researchers have devoted a lot of energy to the reconfigurable research of filters and antennas. Among them, the reconfigurable filter includes switchable working ...

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Problems solved by technology

[0005] At this stage, some multifunctional microwave components or programmable microwave components have been developed. The existing literature records that by using a dual-function cavity resonator, a two-in-one design of filter and antenna integration is proposed, and three Filtering and radiation operations in different frequency bands, but the bandwidth is only 0.33%; there are also literatures using patch or dielectric resonators as radiators and filters at the same frequency, and the radiators only have single-polarization applications; and in these designs, Filters and antennas share resonators, so their center frequencies or bandwidths cannot be tuned independently, and their antennas cannot be dual-polarized at the same frequency

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