Patent ID: 8155602
Filing Date: 2012-04-10
Classification: H01P

Abstract:
1. Circulator with at least three ports (p.sub. 1 , p.sub. 2 , p.sub. 3 ), an input port (p.sub. 1 ) for receiving a radio frequency signal (input signal) to be transmitted to a port (p.sub. 2 ) designed to be connected to a transmit/receive antenna (A) called the antenna port, an output port (p.sub. 3 ) capable of being connected to a receiving device or a load, comprising: a. a first and a second microswitches (MEMS b. the antenna and output ports being placed on a main signal line, the input port being situated on a secondary signal line; c. the first microswitch being placed so as to connect the main signal line and the secondary signal line by self-actuation of the first membrane under the effect of an input signal power; d. the second microswitch having a second membrane making it possible to connect the main line to ground planes by self-actuation of the membrane under the effect of an input signal power; and e. the microswitches being separated by a distance of the order of a quarter of the wavelength corresponding to the frequency of the input signal.