Ferrite sheet for rfid nfc antenna ferrite sheet

By attached between the antenna and the back metal, forming a magnetic conduction channel, which can eliminate the interfere to antenna from metal (Or other sources of interference) , Enable the antenna to transmit a signal normally.


Penghui NFS20 series RF absorption chip / RF diaphragm products as one of Shenzhen Penghui used in RF, favored by the majority of customers. The thickness is 0.15mm, 0.2mm, 0.3mm, 0.5mm, 1.0mm (if customer usage is particularly large, other special thickness that can be customized). This product is widely used in RFID labels, smart card, PCB antenna, flexible antenna, mobile phone shell, in the card packages and other products, can help customers to solve the interference of the use environment (common interference source is metal, it can also be a PCB, components, etc.) and cause the product can not be used normally problems. We are a professional nfc absorber manufacturer, if you are interested in our products, you are welcome to contact us.


The industry has also reached a consensus on the frequency standards of RFID. At present, the international frequency of 13.56MHz,13.56MHz high-frequency RFID technology is widely used in terms of the stable performance and reasonable price, so it is widely used in bus card and mobile phone payment, especially in South Korea, Japan and other places. The RFID electronic tag is often used in the metal environment. When the RFID electronic tag is close to the metal, the metal is strongly reflective to the electromagnetic waves, so it will be accompanied by the signal weakening, the card reading distance will become closer, and even serious interference will appear the card reading failure. The current general solution is to attach a layer with RF suction on the back of the electronic label.


RF wave absorbing sheet is a magnetic functional material with magnetic conductivity, usually with some absorbers evenly filled on the polymer material, and made by a special process. Compared with the traditional wave absorption materials, the performance characterization and use principle of the class 13.56MHz high-performance wave absorption materials are different. The traditional wave-absorbing materials are mainly used in the military confrontation, some aircraft, warships and armored tanks that cover up and confuse the other side of the radar reconnaissance, with microwave segments with very high use frequency, and the use of analysis is also a far-field model. The RF absorbing chip produced by Penghui is mainly aimed at the conductive magnet used in civil electronic equipment to provide the path for the magnetic field. It has the characteristics of high magnetic conductivity and low magnetic loss at the use frequency. However, the loss will increase when the use frequency is higher than the use frequency, and has the nature of low-pass filter. But due to its flexible, convenient installation and other advantages, it has been favored by more and more research and development engineers.


Penghui NFS20 series RF suction / RF diaphragm appearance structure


Penghui NFS20 series RF absorbing chip / RF diaphragm features

  1. Composite material is made of iron-based alloy soft magnetic powder environmental protection polymer material, which is soft, easy to cut, and can be processed into the required shapes and sizes according to customer requirements;
  2. One or two-sided non-conductive double-sided adhesive, which is easy to fit and install when used;
  3. A thin thickness that can be used in a narrow space;
  4. The surface is smooth and smooth, no powder, not rotten edge;
  5. Can improve the RFID electronic labels, antenna, reader, IC card, bus card and other radio frequency electronic products in the problem of reading and writing failure when encountering metal, play a role of anti-metal interference;
  6. The price is very low, which can ensure the low cost and profit space of customers’ products, and is suitable for large-scale goods distribution;
  7. Through the ROHS, HF certification, with aging resistance characteristics.


Penghui NFS20 series RF absorbing chip / RF diaphragm specifications


  1. The product is kept at room temperature to avoid direct sunlight and high temperature and high humidity;
  2. The above data are averaged from the multiple actual tests of the company, and the company has the right to make the final interpretation;
  3. The buyer must determine whether the product is suitable for a specific use and whether it is suitable for the buyer’s application mode. Many factors will affect the performance of the product for a specific use. If you have any questions about the company’s products, please contact the company personnel, so that we can better serve you.


The purpose of nfc absorber:

  1. Absorb electromagnetic radiation and interference.
  2. Isolate the coupling interference caused by the segment between two adjacent elements.
  3. Reduce the instability caused by radiation interference.
  4. Prevent electromagnetic wave leakage.
  5. Reduce the surface current induced by the shield.
  6. It is used to isolate or block interference on circuits such as motherboards, high-frequency electronic components, communication products, GPS, notebook computers, and TVs.


What can nfc absorber do?

Like RFID, nfc absorber information is also transmitted by electromagnetic induction coupling in the radio frequency part of the spectrum, but there is still a big difference between the two.

First of all, nfc absorber is a wireless connection technology that provides easy, safe and rapid communication. Its transmission range is smaller than that of RFID. The transmission range of RFID can reach several meters or even tens of meters. However, due to the signal attenuation technology adopted by nfc, it is relatively for RFID, nfc absorber has the characteristics of short distance, high bandwidth and low energy consumption.

Ferrite wave absorbing material is a kind of flexible absorber material, usually a roll material. It is thin, soft, and flexible. One side is covered with adhesive. After peeling off the release paper, it can be directly and conveniently attached to the product

According to the different fields of use, it can be divided into absorbing materials, absorbing sheets, ferrite sheets, magnetic insulating sheets, etc., which are respectively used in electronic equipment to absorb noise and eliminate electromagnetic interference in the equipment, so as to achieve electromagnetic compatibility.

Used for nfc antenna or RFID antenna to prevent metal interference to electromagnetic waves and improve reading sensitivity.

It is used on the transmitter and receiver coils of wireless chargers to prevent the coils from heating and wasting electric energy during charging.


Features of nfc absorber:

  1. Soft with excellent flexibility and processability;
  2. Lightweight and can be installed in a small space;
  3. Large absorption attenuation and small reflection attenuation;
  4. Easy to use, just stick the product in the proper position in the device;

NFC absorber can be used as noise absorber for mobile device notebook computers, tablet computers, digital cameras, mobile phone FPC/FPC; it can reduce electromagnetic radiation of various electronic devices (noise generated by CPU, etc.) and reduce EMI (resonance, crosstalk, etc.) inside the shielding frame ) can be used in LCD color TV, DVD, DVB, all-in-one computer, TV tuner, GPS navigator and other anti-electromagnetic.

About Company

PH mainly produces absorbing sheet, EMI suppression sheet, sintered ferrite sheet, electromagnetic shielding coating and other electromagnetic functional materials. It is the first national high-tech enterprise in China that focuses on the R&D, production and sales of sheet absorbing materials and electromagnetic shielding coatings. The products are sold to all over the world and are well received by the industry.

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