It is reported that the Nokia X6 (2018) is not a flagship machine, but a mid-range mobile phone. The news said that the Nokia X6 (2018) is equipped with a 5.8-inch 19:9 screen, equipped with Snapdragon 636, 6GB memory, and MediaTek P60, 4GB memory. The version, the back panel or glass, with a vertical double lens, both models will be equipped with Android 8.0 Oreo system. The price is about 1,800 yuan and 1,600 yuan. From April 27th to May 2nd, Nokia mobile phone held the Nokia X new product out of the box in Sanlitun, and also showed the Nokia X new product (or Nokia X6) mobile phone. The machine uses a special-shaped full screen and a narrow chin. Nokia mobile phone officially announced that Nokia X will be officially released on May 16. The back of the Nokia X new product is equipped with a ZEISS-certified dual-lens lens. Below is fingerprint recognition. The reporter reported that the HMD new machine appeared on the national 3C certification website, which is considered to be the Nokia X6 (2018), including TA-1099 and TA-1109, supporting China Mobile's TD-LTE network, and some charging information. It is reported that the Nokia X6 (2018) is not a flagship machine, but a mid-range mobile phone. The news said that the Nokia X6 (2018) is equipped with a 5.8-inch 19:9 screen, equipped with Snapdragon 636, 6GB memory, and MediaTek P60, 4GB memory. The version, the back panel or glass, with a vertical double lens, both models will be equipped with Android 8.0 Oreo system. The price is about 1,800 yuan and 1,600 yuan. With the rapid development of wireless sensing technology, 433 MHz wireless communication devices have been more widely used in portable devices, vehicle-mounted terminals, intelligent locks and other fields [1]. As an important part of wireless communication equipment, antenna is a key component that affects the overall performance of the communication system [2]. 433MHZ Rubber Antenna,433Mhz Patch antenna,433MHZ antenna with magnetic base,433MHZ Yagi Antenna Yetnorson Antenna Co., Ltd. , https://www.xhlantenna.com
Domestic and foreign scholars have been exploring the 433 MHz printed antenna with high gain and miniaturization for many years. However, there are two main trends in the design of 433 MHz printed antenna by previous scholars: one is to sacrifice size to ensure high gain, such as the structural scheme in literature [3]; The other is to sacrifice gain to ensure size miniaturization, such as the scheme in reference [4].
Taking into account the effective size and gain characteristics of the antenna is the difficulty in the design of 433 MHz miniaturized printed antenna. Based on the research experience of domestic and foreign scholars on 433 MHz printed antenna, a 433 MHz miniaturized spiral printed antenna is designed based on the 1/4 wavelength monopole antenna. The simulation results show that the antenna occupies only 20×35 mm2 and the effective gain is -4.14 dB.