Research Of Design Millimeter-wave Solid-state Transceiver Module And Power Combiner

Millimeter-wave refers to the electromagnetic wave wavelength between 1-10 mm.Millimeter wave can be widely used in military and civil radar systems,radio astronomy and space,and short distance wireless high-speed transmission and other fields.MMIC based on GaAs and InP has been applied in military radar and satellite communication in millimeter-wave,but the cost is high.Due to cost and volume constraints,MMW products have not yet been fully commercialized.With the development of millimeter wave radar technology and anti-radar technology,millimeter wave transceiver,solid-state devices and other millimeter wave systems will be developed towards miniaturization,low cost,systematization,high integration and good stability.Based on the design index of main parameters,this paper designed the system scheme of Ka band transceiver module,and investigated domestic and foreign semiconductor chip manufacturers and selected appropriate microwave monolithic integrated circuit chip to build the entire transceiver module.The main research work was as follows:(1)By analyzing microstrip line theory,the relationship among impedance,material and size of microstrip line is analyzed and optimized.At the same time,the effects between the gold bonds number,the bonding materials,the different substrate materials and the interconnection properties are analyzed.Therefore,the transmission line interconnection structure can have good transmission coefficient,high reflection coefficient in the Ka band,which lays a foundation for the implementation of transceiver module circuit.(2)Through the analysis and elaboration of the principle of E-Y and E-T power division structure,the Ka-band three-way power divider/combiner based on E-Y structure and the Ku band five-way power divider/combiner based on E-Y and E-T structure are designed,and the odd-path power distribution/synthesis network is analyzed and simulated.At the same time,the five-way power divider is processed and its back-to-back structure is tested The test results show that,in the frequency band of 12-18 GHz,the measured return loss is better than 20 dB,and the measured insertion loss is less than 0.35 dB.The simulation and the measured curve have a good coincidence.The combination of odd-number power dividers and traditional power dividers can realize arbitrary power divider so as to improve the synthesis efficiency and lay a foundation for the transceiver module of any channel.(3)By investigating and analyzing the principle and specific implementation form of the transceiver module,and combining with the main parameters and technical indexes of the transceiver module,the overall structure design scheme of this topic's ka-band solid-state transceiver module is proposed by using the superheterodyne structure of two frequency conversion.At the same time,according to the given parameters and technical indicators,appropriate microwave monolithic integrated circuit chips were selected from domestic and foreign semiconductor chip manufacturers.Then,according to the overall structure scheme,the cascade software was used for system simulation of its transceiver components.The simulation results show that the receiving branch of the transceiver is within the RF frequency band of 27.5-31 GHz,and the receiving power is less than-15 dBm,the noise coefficient is 3.79 dB,and the small signal gain of the channel is more than 35 dB.In the RF frequency band of 27.5-31 GHz,the transmitting output power is about 10 dBm,and the spurious suppression degree is greater than 35 dBc.The feasibility of designing the transceiver module in this subject is confirmed by meeting the pre-goal.