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This paper proposed a high frequency spurious suppression 60GHz transceiver, which is composed by single module. It works in the 59–64GHz RF frequency with two 2.16GHz bandwidth IF communication channels in the 8.64GHz. The cavity band pass filters are added in the output of the TX and the LO link to realize the high sideband reject and low spurious. This kind of capacity-loading filter can realize...
Micro Electro Mechanical Systems (MEMS) are systems based on a diversity of technologies whereby tiny mechanical elements with excellent system properties can be implemented. The substrate properties such as relative permittivity, relative permeability and electrical conductivity is varied and its effects on electric field distribution, displacement and potential is analyzed in MEMS EVA tunable filters...
The prediction of peak voltages in high-power bandpass filters is presented using a new method in order to overcome the limitations of previously reported techniques. The concepts of coupling matrix, frequency transformation, and resonator stored energy are used to arrive at a compact formulation, which accounts for both circuital and electromagnetic (EM) filter characteristics. The resulting expression...
This paper studies a case where a modern RF communications system require internal EMC filtering and shielding up to frequencies of 20GHz or more even when the operating frequencies of the system are only around 2GHz. The results of this study pinpoint the importance of system co-design with mechanics, filtering and related electromagnetic phenomena taken into consideration as key drivers for high...
This paper provides the first study of electromechanical non-linearities of MEMS tunable bandstop filters. The studied non-linearity sets a limit on the power handling capability of such filters. A two-pole MEMS tunable evanescent-mode (EVA) bandstop filter is fabricated and measured to validate the non-linear circuit modeling. Good agreement is observed between measurement and modeling. The fabricated...
System-on-Package (SOP) is presently the most effective method for realizing the miniaturization of wireless front-end applications. Band pass filter is one of the most important components in the SOP. In this paper, a 5-pole band pass cavity filter consisting of via walls was designed as a system-on-package solution for RF front-end modules at 34GHz, adopting low-temperature co-fired ceramics (LTCC)...
In order to develop the system of satellite communication and its new technology in the laboratory, an S-Ku band up-conversion and down-conversion sections is designed by the combination of microwave PLL synthesizer, S band cavity filter, Ku band cavity filter and RF mixer in this paper. 30 MHz bandwidth for the input signal of simulate transponder is realized. Furthermore, an S band coaxial cavity...
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