Ultrahigh frequency smart tag chip with built-in antenna

A technology with built-in antenna and smart label, which is applied in the direction of antenna support/mounting device, record carrier used by machines, instruments, etc., and can solve the problems that the antenna cannot be matched to the resonant frequency, the inductance of the antenna is reduced, and miniaturization cannot be realized. , to avoid quality degradation, improve quality, and save production materials

Inactive Publication Date: 2012-08-01
上海祯显电子科技有限公司
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  • Abstract
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Problems solved by technology

From the perspective of reducing the size of the RF antenna, after reducing the size of the RF antenna, the inductance of the antenna will decrease, and the length of the antenna cannot match the requirements of the resonance frequency. In the case of matching the input capacitance of the same chip, it is necessary to add an external matching capacitor. In order to reach the resonant frequency of 860-960MHz
[0006] From another perspective, the most important thing is that there is a physical connection between the antenna and the chip, so the overall size quotient cannot achieve true miniaturization

Method used

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  • Ultrahigh frequency smart tag chip with built-in antenna
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  • Ultrahigh frequency smart tag chip with built-in antenna

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Embodiment Construction

[0034] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0035] The present invention aims at problems such as high production cost, cumbersome manufacturing process, relatively poor reliability in use, and large product volume in the conventional production process of ultra-high frequency micro-smart labels, and provides a technical solution , the implementation is as follows:

[0036] see figure 2 The internal structure, working principle block diagram and application schematic diagram of a traditional UHF smart label chip. The part inside the dotted line box 1 is the chip body, which consists of antenna input ports (Ant1 and Ant2), power management circuit (Power Management), modulation and demodulation circuit (Modulator / Demodulator), control circuit (Controller) and data memory circuit (Data M...

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Abstract

The invention discloses an ultrahigh frequency (UHF) smart tag chip with a built-in antenna. The UHF smart tag chip comprises the UHF antenna, a power management circuit, a modulation-demodulation circuit, a control circuit and a memory circuit, wherein the UHF antenna is a monopole UHF antenna arranged on a semiconductor substrate through using a lithography process and comprises a spiral radiation unit, an impedance balance unit, a feeder line, signal ports and a grounding metal surface. The UHF smart tag chip with the built-in antenna, which is disclosed by the invention, is a subminiaturized UHF chip-level intelligent tag.

Description

technical field [0001] The invention relates to the field of ultra-high frequency radio frequency communication and the field of ultra-high frequency smart label chips, in particular to an ultra-high frequency smart label chip with a built-in antenna. Background technique [0002] In recent years, due to the continuous development of radio frequency electronic technology, especially the wide application of radio frequency smart labels, people's way of life is gradually changing. Common radio frequency electronic tags are divided into two categories: active and passive in terms of power supply; in terms of carrier frequency, there are 125KHz (130KHz) low-frequency bands, 13.56MHz high-frequency bands, 433MHz, 860~960MHz ultra-high Frequency band, 2.4GHz, 5.8GHz microwave frequency band; the application of electronic tags is ubiquitous, so there are various shapes and products suitable for different application requirements, making people's life more convenient and efficient. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K19/077H01Q1/22
Inventor 陆红梅
Owner 上海祯显电子科技有限公司
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