a. Two-hole directional coupler
b. Four-hole directional coupler
c. Reverse-coupling
directional coupler
d. Bethe-hole directional coupler
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RF MODULE-XBEE :
zigbee module XBee and XBee-PRO Modules were engineered to meet ZigBee/IEEE 802.15.4 standards and support the unique needs of low-c...
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