Circuit and IoT terminal with antenna function and button function

Abstract

The invention discloses a circuit with antenna function and button function and an Internet of Things terminal, wherein the circuit with antenna function and button function includes a function button, a connection line, a filter circuit, a button detection circuit and a radio frequency transceiver circuit. The function key is connected with the filter circuit through the connection line, and the key detection circuit and the radio frequency transceiver circuit are respectively connected with the filter circuit. The function key is used to generate a key signal when it is triggered by pressing. Connecting lines for passing key signals to filter circuits and receiving / transmitting RF signals. The filter circuit separates and processes the key signal or radio frequency signal. The invention uses the connection line between the function key and the filter circuit as an antenna to receive or radiate electromagnetic waves, realizes the key function of the connection line, and also achieves the effect of the antenna, reduces assembly space, and saves material costs.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a circuit with an antenna function and a button function and an Internet of Things terminal. Background technique [0002] Nowadays, IoT terminals with wireless networking such as Bluetooth, WIFI and Zigbee are becoming more and more popular. Various smart home devices, wearable smart hardware, smart office products and other IoT terminal devices have high requirements for size, networking stability, and cost. [0003] The connection lines of the existing Internet of Things terminal equipment are usually led from the flexible printed circuit board (FPC, Flexible Printed Circuit) to the inner surface of the device casing. Usually, the connection line between the power-on button and the inner surface of the casing will occupy a certain amount of space. Space, space utilization rate is low. [0004] Among them, the antenna is an important part that cannot be ignored...

AI Technical Summary

Problems solved by technology

[0004] Among them, the antenna is an important part that cannot be ignored in wireless signal transmission. An antenna with high-quality performance can ensure the reliability of networking, but the antenna will occupy a certain amount of space in the device. Sometimes in order to achieve good performance, the appearance of the product has to be sacrificed to install a large The size of the antenna, so as to meet the needs of users for wireless networking, and reduce the industrial aesthetics of the product

At the same time, high-quality antennas have high material costs, which affect the convenience of IoT terminal equipment, and the high price is not conducive to the popularization of IoT terminal equipment.

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