New product development of organic magnetic materials and their application in high-frequency microwave electronic devices Lin Yun\ Lin Zhanru2, Gan Jiuzhi2 (1. Shenzhen Kangyuan Organic Magnet Industry Company, Shenzhen 518038, China; 2. Department of Chemistry, Sichuan Normal University, Chengdu, Sichuan 610066) Irradiation resistance and anti-aging performance, can be used to make high-performance high-frequency, microwave electronic devices, such as directional couplers (a splitter), two 90* power dividers/combiners and band-pass filters, etc. Compared with the traditional ferrite devices, the overall performance in a certain frequency band is better. 1 Introduction Modern electronic devices are moving toward lightweight, miniaturization and planarization, ie, light, small and thin. Although ferrite has been widely used in electronic devices, it is relatively large, easily broken and difficult to process, and it is difficult to adapt to certain special requirements of aerospace and military. In order to seek a new generation of magnetic materials that are lightweight, easy to process and have good impact resistance, in recent years, we have developed a synthetic route that is different from that of the United States, Japan, and Russia by combining domestic conditions, using domestically produced raw materials and unique synthetic methods. Developed a series of stable organic magnetic materials at room temperature. These materials have been physically treated and chemically blended to become a new class of lightweight, lightweight, organic magnetic materials with good impact, radiation, and aging resistance. With the assistance of many electronics experts in Chengdu, a series of properties have been developed. Excellent high frequency, microwave devices. It is expected that it will be widely used in military, aerospace and civil high-tech fields. 2 Preparation of Materials and Devices and Performance Testing 2.1 Preparation of Materials and Devices First of all, according to our patent, high-purity nitrogen or argon is used, and ferrocene is used as raw material to synthesize organic magnetic material precursor (non-magnetic) by multi-step reaction. The self-made transition metal magnetizer reacts to form a normally stable black organic magnetic material powder. Finally, in the presence of a Coupling agent, the additive is blended and modified, and then hot-pressed into an organic magnetic rod, a magnetic ring, or a magnetic plate for manufacturing an electronic device. 2.2 Performance testing The intrinsic magnetic parameters are opened by the National Institute of Physics, Chinese Academy of Sciences, by 10%. However, the intrinsic magnetic parameters are basically unchanged. The measurement of a naturally aged sample with a zero table for four years shows that the zero value of the organic magnetic material increases by 10% after natural air aging for four years, as shown in Table 2. Using the HP4272A instrument to measure 10kHz 10MHz 0 / law is basically the same. Comparing the comprehensive performance of shock-resistant, radiation-resistant organic magnetic materials with NiZn ferrite, it can be seen that the organic magnetic material is not as good as NiZn ferrite in the low frequency range below 100 MHz, but in the wide frequency range of 1003500 MHz, it is NiZn ferrite has many advantages, as shown in Table 3. 4 Development of high-frequency microwave electronics 4.1 Directional coupler Transformer-type directional coupler (a splitter) is a circuit in which a certain number of turns of a coil is wound on a magnetic core and forms a certain type of circuit with resistors and capacitors for directional power. Sampling, signal source and dynamic monitoring, signal branching, feedback from power amplifiers, and “1â€, “â€, and, as a function of frequency (total radiation dose 15000 MGy) Pre-irradiation, post-irradiation, pre-irradiation, post-irradiation, post-irradiation, pre-irradiation, post-irradiation, magnetic materials and devices, October 2002 Table 2. g-valued Zn-containing samples containing Zn, Pb, Co organic magnetic samples naturally aged Pb Samples with Co Samples Table 3 Comparison of Organic Magnetic Materials with NiZn Ferrites Magnetic Properties Organic Magnetic Materials Applicable Temperature Range/°C Temperature Change Rate/% Applicable Frequency f/MHz Note: Normally NiZn Ferrous Oxide in Magnetic Materials Handbook The magnetic permeability of the body and tg5/f only list the data below 300 MHz, and the ferrite above 300 MHz in the table is calculated (supplied). Comparison of Organic Magnetic and Ferrite Directional Couplers Models and Manufacturers Frequency Range/MHz Insertion Loss/dB Branch Loss/dB Reverse Isolation/dB Reflection Loss/dB (Beijing Institute) (A Factory in Chengdu) 25 30 (Chengdu A plant) 23 organic magnetic * (Sichuan Normal University) * measured data, other manufacturers data taken from the product catalog, Table 5, Table 6 same. Insertion Loss (A) and Branch Loss (B) vs. Frequency of Organic Magnetic Alignment Splice Devices Insertion Loss (A) of Organic Magnetic Directional Couplers and the Relationship of Reverse Isolation and Frequency Giant Chengdu Plant Sichuan Normal University Magnetic (No. 2) Frequency Range/MHz Isolation/dB Insertion Loss/dB Amplitude Unbalance/dB Phase Unbalance/Table 6 Organic Magnetic and Ferrite Power Distribution/Synthesizer (Two 90°) Performance Comparing (b) a large factory in Chengdu, Sichuan Normal University, the organic magnetic (No. 2 magnetic powder) frequency range / MHz isolation / dB insertion loss / dB amplitude imbalance / dB phase imbalance / number of other treatment. The directional coupler made of the double-hole magnetic core made of 07X2mm organic magnetic material has better frequency bandwidth and better performance than the ferrite similar products made by famous domestic manufacturers, as shown in Table 4. The relationship between the performance of the organic magnetic directional coupler and the frequency is shown in FIG. 4.2 Organic Magnetic Power Distribution/Synthesizer (Two-way 90*) The power distribution/combining device is widely used in electronic systems and test equipment. It can accurately perform power distribution and synthesis, power monitoring, signal source isolation and transmission testing, etc. A number of functions, using a high-impact organic core with special circuit design and power distribution / synthesizer, have obvious superior performance compared with similar products at home and abroad. As shown in Tables 5 and 6. The relationship between organic power distribution/combiner performance and frequency is shown. 5 Conclusions The black powder of organic magnetic material has good resistance to temperature, vibration and impact resistance by blending and modification. Long-term high-dose 60Co-Y-ray continuous irradiation and natural aging tests have shown that organic magnetic materials have good resistance to radiation and natural aging resistance. Magnetic materials and devices In October 2002, directional couplers, power dividers/combiners (two-way 90*) and band-pass filters made of organic magnetic materials were significantly better than ferrites in their overall performance at a certain frequency. Good development value and development prospects. Acknowledgements: I would like to express my sincere gratitude to Wang Pei and Lou Songlin, Senior Engineer of Chengdu 970 Factory, Zhong Chengde Gaogong and Lu Xiangming, Engineers of 57 School of General Staff and Electronics Industry of the Ministry of Information Industry, Li Zhilin, for assisting in the manufacture of electronic devices using organic magnetic materials. To test their performance, with their great assistance, the organic magnetic materials we developed are likely to become commercialized.
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