928mhz RF module with onboard pcb antenna
A PCB antenna and radio frequency module technology, applied in the field of 928MHz radio frequency module, can solve the problems of low production cost, high profile, low gain, etc., and achieve the effects of improving uniform symmetry, improving communication distance, and stable and reliable performance.
Active Publication Date: 2016-06-08
ZKS SHAOXING IOT IT CO LTD
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Problems solved by technology
Now PCB printing board (printed circuit board) is used as the radiation unit structure, which uses a solid planar vibrator arm, which has the following problems: low gain, narrow bandwidth, high profile, unsatisfactory third-order intermodulation index, these problems As a result, the communication quality in the service area cannot be guaranteed
[0006] In a low-power, short-distance wireless sensor network system or active RFID system, because of the small size of the product, an antenna design with a small system, low price, and a communication distance as far as possible is required. The PCB antenna has the largest volume among the above-mentioned antenna types. Small, low production cost, but the communication distance is generally smaller than other antennas
Method used
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Embodiment 1
[0027] In the warehousing active RFID identification system, each warehouse is generally divided into cargo storage areas and aisles. Forklifts can pass through the aisles, and the radio frequency module installed on the forklift can communicate with a radio frequency module mounted on each item to achieve fast The function of stocktaking and looking for goods; before the present invention was implemented, the radio frequency module on the forklift in the aisle could only communicate with the radio frequency module mounted on the goods within 20m. After adopting the technical solution of the present invention, due to the antenna gain Increase, effectively increase the communication distance, the radio frequency module installed on the forklift can communicate with the module within 30m, so that the system can adapt to larger and higher warehouses.
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The invention relates to a PCB and especially to a 928MHz radiofrequency module of a board-mounted PCB antenna. The 928MHz radiofrequency module of a board-mounted PCB antenna comprises a PCB substrate on which a radiofrequency transmitting-receiving module, a balanced-unbalanced circuit, an antenna, and an antenna gain module are disposed. The radiofrequency transmitting-receiving module is connected with the antenna gain module via the balanced-unbalanced circuit. The antenna gain module is connected with the antenna. The 928MHz radiofrequency module of a board-mounted PCB antenna changes the number of units in order to achieve different gains and has characteristics of high efficiency, stable and reliable performance, and low cost.
Description
technical field [0001] The invention relates to a PCB circuit board, in particular to a 928MHz radio frequency module with a board-mounted PCB antenna. Background technique [0002] The functions of PCB (Printed Circuit Board, printed circuit board) generally include: 1. Provide mechanical support for fixing and assembling various electronic components such as integrated circuits; 2. Realize wiring and electrical connections between various electronic components such as integrated circuits (signal transmission) or electrical insulation. Provide the required electrical characteristics, such as characteristic impedance, etc. [0003] An antenna is a transducer. When transmitting, it converts the high-frequency current of the transmitter into space electromagnetic waves; when receiving, it converts the electromagnetic waves intercepted from space into high-frequency currents and sends them to the receiver. Antenna design is an important part of designing a low-power, short-r...
Claims
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IPC IPC(8): H01Q1/24H01Q23/00
Inventor 林克坚蔡旭东姜惠启许广俊
Owner ZKS SHAOXING IOT IT CO LTD