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Title Control Driver Designing and Programming for Very Large Order RF-MEMS Switch Matrices
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Abstract For telecommunication systems in space very large order switching matrices are
needed, where a great number of inputs are connected with the corresponding outputs.
Requirements for such a switching matrix are low insertion loss, high isolation with
low coupling between the various transmission channels, low power consumption and a
symmetrical transmission behavior. Radio Frequency Micro-electro-mechanical
Systems (RF-MEMS) represent an attractive technology for satellite applications
thanks to their low insertion loss in the transmission path, low power consumption,
compact size and weight and high integrality.4945
To control switching matrices, hundreds of RF-MEMS switches should be
simultaneously controlled according to the permutation. In this paper, the literature
research on state-of-the-art control algorithms for Benes networks is done. Suitable
algorithms are realized for the normal RF-MEMS switch matrices and a new algorithm
is created for the potential arbitrary number of input-output Benes network using
Matlab and its GUI (Graphical User Interface). Moreover, the layout for the complete
DC control network on a multilayer LTCC board is designed by ADS.
Keywords RF-MEMS Switch matrices Benes network
Contents
1 Introduction . 2
1.1 Background .. 2
1.2 Project Description .. 3
2 Looping Algorithm for 16×16 Benes Network ... 5
2.1 Benes network.. 5
2.2 Advantages of using Benes network 6
2.3 Looping Algorit 6
2.4 Looping Algorithm for 16×16 Benes network . 9
3 Looping Algorithm for 12×12 Benes Network 12
3.1 Construction Strategy 12
3.2 Looping Algorithm for 12×12 Benes network ... 14
3.3 Another Switch control algorithm for 12×12 Benes network 16
3.3.1 Construction Strategy . 16
3.3.2 Switch control algorithm for 6×6 Benes network ... 18
3.4 Compare two algorithms 18
4 Realization of Switch Control Algorithm Using Matlab GUI .. 20
4.1 Description of program design .. 20
4.1.2 Determination of input-output connection requirement . 22
4.1.3 Switch control function ... 23
4.1.4 Output the result.. 25
4.2 Examination of software for switch control .. 25
4.2.2 Examination of 16×16 Benes network switch contro1 GUI ... 25
5.1.2 Examination of 12×12 Benes network switch contro1 GUI .. 29
5 DC Layout Board Design . 33
5.1 The principle of DPDT .. 33
5.2 The necessary of DC layout Board 34
5.3 The Design of DC layout Board 35
5.3.1 The Design of DC layout Board for part 1 . 36
5.3.2 The Design of DC layout Board for part 2 and 3 38
6 DC Layout Designed by ADS ... 40
6.1 Design requirement 40
6.2 Design result .. 40
7 Program Modification according to Switches Network Layout Board 43
Conclusion ... 47
Acknowledgement ... 48
Reference . 49
Appendix .. 51
1 Introduction
1.1 Background
Micro-electro-mechanical Systems (MEMS) is the integration of mechanical elements,
actuators, sensors and electronics, which is typically fabricated on a common substrate
through the micro-fabrication technology. A device with MEMS technology is relatively
small, has virtually no mass and is not sensitive to acceleration, consumes no DC power,
which can be manufactured on low-cost silicon or glass substrates. Compared with other