The Design And Implementation Of A Preselection Filter For Ultrashort Wave Wideband Receiver

In the course of research,ultra-wideband wideband receivers mainly develop in the direction of higher performance,higher stability,and higher sensitivity.To achieve this goal of ultra-wideband wideband receivers,we must choose to have Wide frequency coverage,and has a strong anti-jamming capability of ultra-shortwave wideband receiver reselection filter to achieve.Because it is necessary to design an ultra-wideband wideband receiver pre-filter that can switch frequencies freely so that it can be applied in a strong electromagnetic interference environment,the self-adaptation of the ultra-shortwave wideband receiver itself can mean that it can self-determine signals of different frequencies.The recognition of adaptation means that the quality of the signal on the entire transmission link can be comprehensively analyzed and evaluated through real-time channel estimation,while using its own algorithm to avoid blocked transmission channels and interfered frequency bands,and to select the appropriate frequency to establish.A complete signal link,but currently only relying on frequency adaptive technology can no longer meet the application requirements of ultra-wideband wideband receivers in the design process.With the continuous development of scientific information technology,other adaptive technologies have emerged gradually.Including encoding,transmission rate,power and modulation and demodulation,so in the process of designing ultra-wideband wideband receiver reselection filter,the application of full adaptive technology as an important aspect to design and analysis.The ultra-shortwave wideband receiver reselection filter designed in this topic will be applied in the aerospace,aviation and military fields in the future,and it can also be applied in the field of civil communications,which will bring great improvements to civilian communications.This article discusses the implementation of a pre-filter radio IF receiver module for an ultra-wideband wideband receiver.The topic firstly analyzes the research background and research significance of the pre-filter of the ultra-wideband wideband receiver,and analyzes the research status of the subject both at home and abroad,and then gives a detailed description of the research content of the topic.A comprehensive analysis of the technology used in the design of pre-filters for ultra-wideband wideband receivers was performed,ultra-shortwave communication technology and wireless receiver technology.The model of the filter in the preselected filter of the ultra short wave wideband receiver is analyzed in detail.First,the type of the filter is described,then the principle and characteristics of the wideband bandpass filter are described.Finally,the pre selected filter and the PIN switch are designed and designed in detail and test.In the fourth part of the dissertation,the specific design and simulation verification of the pre-filter of UWB wideband receiver is carried out.Firstly,the structure of the reselection filter is designed,then the AWR tool is used to assist the design,and the filter is verified by simulation.Finally,the pre-filters of ultra-wideband wideband receivers are tested and analyzed in detail by the system test tools,verifying that the design of the system meets the predetermined design requirements.In this study,a reselection filter for an ultra-wideband wideband receiver will be fabricated through a PIN single-switch and LC filter scheme.According to the current situation of LC filters at home and abroad,the frequency production to 3000 MHz is also a technical breakthrough,and it has the effect of filling in the blank for high-frequency LC filters.The UHF communication terminal studied in this project supports data communication and facilitates the transmission of various information.It has certain social significance and economic value.The research and development of ultra-shortwave communication terminals have been completed.Certain reference significance.