In a switching circuit, low insertion loss and enough isolation can be ensured at a desired frequency at the same time. An inductor is externally connected in parallel with the path between the drain and source of each of field-effect transistors built in a switching integrated circuit, and the inductor...http://www.google.com/patents/US5969560?utm_source=gb-gplus-sharePatent US5969560 - Switching circuit at high frequency with low insertion loss
