MICROWAVE DIODE SHUNT-FED ANTENNA POLYPLEXER Russian patent published in 2005 - IPC

FIELD: polyplexers built around pin-diodes.

SUBSTANCE: proposed polyplexer designed for alternate connection of receiver and transmitter to multielement transceiving antenna such as phased array has its pin-diodes connected in series-parallel circuit of transmission line incorporating quarter-wavelength sections for on-off operation in transmit-receive mode without feeding control currents; switching section of transmission line such as that of microstrip feeder line of phased array is connected in composite four-channel circuit where transmitter output is connected through quarter-wavelength matching transformer and common microwave power distribution point to four antenna radiators, respectively, using diode shorted out by compensating inductance coil and series-connected between common point of microwave power distribution and antenna radiator, one diode per radiator; each antenna radiator is connected, in its turn, to respective input of receiver through two quarter-wavelength microstrip sections provided with grounded diodes parallel-connected at boundary of each section, one diode per radiator, two microstrip components such as those in the form of feeder line sections of wave impedance higher by 20 - 30% than that of main feeder line being separated symmetrically with respect to point of connection of each diode to boundary of quarter-wavelength section of two microstrip components.

EFFECT: reduced mass and size, enhanced operating reliability due to simplified multichannel circuit arrangement of device, facilitated wiring of feeder with more than four switching channels.

1 cl, 1 dwg