Circuit boards and antenna assemblies compatible with digital circuits and RF circuits

Abstract

The invention discloses a circuit board and an antenna device which can be compatible with digital circuits and radio frequency circuits. The circuit board capable of being compatible with digital circuits and radio frequency circuits includes a substrate and a panel. The substrate includes a plurality of substrate core boards and a substrate insulating layer arranged between adjacent substrate core boards. The top of the substrate has a recessed area, and the recessed area faces the substrate. The interior extends to the substrate insulating layer; the thickness of the panel matches the depth of the recessed area, the panel is arranged in the recessed area, and the bottom base copper of the panel is located in the level where the substrate insulating layer is located. The circuit board compatible with the digital circuit and the radio frequency circuit of the present invention has both the signal quality of the digital and the radio frequency part, improves the reliability of the product, and occupies less space, can make the product more compact and delicate, and is helpful for the adjustment of the size of the product. The design of wireless products with higher requirements, and at the same time, the cost is lower, and the purpose of cost control can be achieved.

Description

technical field [0001] The present invention relates to the field of communication technologies, and in particular, to a circuit board and an antenna device that are compatible with digital circuits and radio frequency circuits. Background technique [0002] The RRU (Remote Radio Unit, remote radio unit) module in the existing 5G equipment has digital circuits and radio frequency circuits on its PCB (Printed Circuit Board, printed circuit board). The RRU needs to use optical fiber to communicate with the uplink equipment BBU (Building Base Band Unite, indoor baseband processing unit). Usually, the digital signal rate here is often very high, and the PCB needs to use high-speed boards, while for RF circuits, high-speed boards are often not required. Instead, use high-frequency boards. [0003] At present, there are two main ways to realize the mixed design of digital circuit and RF circuit of RRU: [0004] First, the digital circuit and the RF circuit of the RRU are separat...

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Problems solved by technology

[0004] One is that the digital circuit and the radio frequency circuit of the RRU are separated, and each is made of a PCB board. They communicate through a high-speed connector. This method increases the cost of the connector and takes up a lot of space. For small devices, the whole machine The size is very limited, and there is not enough space for optimization;

[0005] The second is the common board design of the two, but the performance is traded off. Generally, high-speed boards are selected, and the performance of the RF signal is sacrificed appropriately, or the performance of the RF signal is guaranteed by adding devices in the RF part. This method also increases the cost of materials and PCB. the cost of

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