The Design And Research Of Equipment And Antenna For Microwave Hyperthermia

Cancer treatment has been a worldwide problem all along, surgery, radiotherapy and chemotherapy treatment is still the main means, although the traditional method of treatment has been developed by a large scale, but the effect of the treatment is hanging back all the time, high costly treatment and the injure patients suffered in the therapeutic process, has still hindered the development of cancer treatment in the bottlenecks. In recent years, compared with surgery, radiotherapy and chemotherapy, by mean of its non-invasive, the technology of microwave hyperthermia has been applied more and more extensively in cancer clinical treatment. Whether from the heat biology or the equipment, microwave hyperthermia has made a great progress, and after clinical verification, it has got a perfect result, and became a new development direction in the cancer therapies.Because microwave hyperthermia treatment for cancer has non-invasive, less side effects, relatively safe and effective, thus its development can utilize microwave effectively to cure cancer, its clinical application, is playing a big role in improving the survival rate of cancer patients, to extend patients' life and improve the quality of life. Aiming at the treatment for superficial muscle tissue, a microwave hyperthermia hardware and software systems was designed, and applied to the superficial muscle tissue, a microwave hyperthermia antenna was also designed.In the system of microwave hyperthermia for tumor which was designed in this paper, the hardware system includes a main system based on the MCU of AT89C52 and a subordinate system based on the AT89C2051, the main system is for the operating of the interface and the running of the system, subordinate system is for the regulating and maintaining the stability of the microwave power output. Software Features: software system can make the entire system flexible, the treatment time, power and other parameters easy to set, and made the interaction of the microwave hyperthermia and the interface easier. Under final test, the microwave hyperthermia system was stable and reliable.By means of the HFSS software, the antenna was simulated and designed in this paper. The elementary antenna equiangular spiral antenna and the array antenna were designed, for the superficial muscle tissue, its reflection coefficient is smaller and the electric field distribution is better. The elementary antenna and the array antenna's electric field distribution and S₁₁ was analyzed and compared, and the antenna which electric field distribution was reasonable in the Working frequency and the S₁₁ which was smaller has been given finally.