射频开关基础知识
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同轴开关基础知识
定义：同轴开关可通过电压或计算机编程自动控制，在微波电路中做切换用。分类：按照实现方式可分为三类
同轴开关，又称电磁开关、射频开关、机电开关
PIN开关，又称电子开关
MEMS开关，又称微电子开关
同轴开关和PIN开关有什么不同？
同轴开关操作原理是供电实现机械动作，而PIN开关则不需要。
同轴开关实物较大，PIN开关可以做的很小
同轴开关开关时间慢，隔离度、插损、驻波性能好，耐受功率高
PIN开关开关时间快，隔离度、插损、驻波性能差，耐受功率低
Qualwave Inc main products:
Amplifiers:9kHz-110GHz,Power amplifiers,Low noise amplifiers
Cables/Assemblies:DC-110GHz,Ultra Low Loss&Phase Stable
Coaxial Adapters:DC-110GHz,Low VSWR
Fixed Attenuators:DC-67GHz,0.5W-500W
Terminations:DC-67GHz,0.5W-500W
Coaxial Switches:DC-67GHz,SPDT-SP20T,DPDT,2P3T
DC Blocks:0.01-67GHz
Detectors:0.01-110GHz
Couplers:100KHz-67GHz,90°/180°Hybrid Couplers,Directinal Couplers,Dual Directional Couplers
Power Dividers/Combiners:DC-67GHz,2,3,4,6,8,16Ways
Circulators/Isolators:56MHz-40GHz,Octave&Multi-Octave
Filters:DC-67GHz,Low Pass Filters,High Pass Filters,Band Pass Filters,Band Reject Filters Frequency Sources:DC-40GHz
Phase Shifters:DC-40GHz
Horn Antennas:up to112GHz
Etc.
开关主要系列：
Part Number Frequency
(GHz)
Switch Type
Switching Time
(mS,max.)
Operation Life
(cycles)
Connectors
Lead Time
(weeks)
QMS2V DC~67GHz SPDT201M 1.85mm2~4 QMS62DC~50GHz SP4T201M 2.4mm2~4 QMSD22DC~40GHz DPDT201M 2.4mm2~4 QMS2K DC~40GHz SPDT155M 2.92mm2~4 QMS2KT DC~40GHz SPDT(Terminated)155M 2.92mm2~4 QMS6K DC~40GHz SP3T~SP6T153M 2.92mm2~4
QMS6KT DC~40GHz SP3T~SP6T(Terminated)152M 2.92mm2~4 QMSD2K DC~40GHz DPDT152M 2.92mm2~4 QMSD3K DC~40GHz2P3T155M 2.92mm2~4 QMS10K DC~26.5GHz SP7T~SP10T153M 2.92mm2~4 QMS10KT DC~26.5GHz SP7T~SP10T(Terminated)152M 2.92mm2~4 QMS2S DC~18GHz SPDT155M SMA2~4 QMS2ST DC~18GHz SPDT(Terminated)155M SMA2~4 QMS6S DC~18GHz SP3T~SP6T153M SMA2~4 QMS6ST DC~18GHz SP3T~SP6T(Terminated)152M SMA2~4 QMS8S DC~18GHz SP7T~SP8T152M SMA2~4 QMS8ST DC~18GHz SP7T~SP8T(Terminated)152M SMA2~4 QMS10S DC~18GHz SP9T~SP10T153M SMA2~4 QMS10ST DC~18GHz SP9T~SP10T(Terminated)152M SMA2~4 QMSD2S DC~18GHz DPDT152M SMA2~4 QMSD3S DC~18GHz2P3T155M SMA2~4 QMS12S DC~15GHz SP11T~SP12T152M SMA2~4 QMS2N DC~12.4GHz SPDT152M N2~4 QMS6N DC~12.4GHz SP3T~SP6T152M N,SC2~4 QMS2E DC~8GHz SPDT152M SC2~4 QMS18S DC~6GHz SP13T~SP18T152M SMA2~4
QMSD2N DC~6GHz DPDT152M N2~4