MICROSTRIP ANTENNA SWITCHING DEVICE (MASD) Russian patent published in 2012 - IPC H01Q23/00 

FIELD: radio engineering.

SUBSTANCE: device comprises a transmitting, a receiving and a transceiving sections of a transmission line, a T-shaped branching with a quarter-wave-length section in the arm of a transmitter and two controlled diodes, one of which is included into the arm of the receiver, and the other one, via the second quarter-wave-length section, into the arm of the transmitter, a switching section is added, as well as two directional coupler with matched resistors and three matching sections. All elements of the device, apart from the controlled diodes, are arranged on the upper side of a microprinted circuit board, the reverse side of which is fully or partially metallised and grounded, and controlled diodes are installed near the microprinted circuit board on a separate plank.

EFFECT: development of a multifunctional antenna switching device with improved technical and operational characteristics in part of isolation between transmitting and receiving channels, loss of power during transmission and reception, reliability, ability to control capacity of the transmitter and tune the receiver, included into a transceiving module, during its adjustment and operation.

2 dwg