A new Ka-band doubly balanced mixer based on Lange couplers

作者：Lai Yu Ann^*; Lin Chih Ming; Lin Che Hung; Wang Yeong Her

来源：IEEE Microwave and Wireless Components Letters, 2008, 18(7): 458-460.

DOI：10.1109/LMWC.2008.925110

• doubly balanced mixer
• Lange coupler
• phase
• PHEMT

A compact Ka-band doubly balanced diode mixer with new phase relationships is demonstrated. In this design, a novel configuration was employed to have good performance while keeping compact size and simple intermediate frequency (IF) extraction. It is flexible not only in layout design, but also in the reduction of IF inductance. The chip dimension is as small as 0.85 x 1.35 mm(2), implemented by using a 0.15 mu m PREMT technology. This mixer has a conversion loss between 9 to 12 dB, a dc-3.5 GHz IF bandwidth, and a good port-to-port isolation in Ka band.

• 出版日期2008-7