STACKED MULTIBAND AND MICROSTRIP ANTENNA Russian patent published in 2008 - IPC H01Q1/38 H01Q5/01 

FIELD: antenna engineering; stand-alone receiving, transmitting, or transceiving multiband antenna or phased-array antenna.

SUBSTANCE: proposed antenna has first through fourth antenna elements. Each antenna element has printed conductor and insulating substrate. Separating board has two relatively insulated printed conductive pads and insulating substrate. There are also coaxial cable, transmitting line, first and second spikes, conductive screen, first and second high-frequency connectors. Each antenna element has central hole to pass coaxial cable and off-centered hole to pass first and second spikes, respectively. All four antenna elements and separating board are joined together and printed conductors of antenna elements are electrically connected in center to external conductors of coaxial cable which is electrically connected to conductive screen through first high-frequency connector. Internal conductor of coaxial cable is connected at one end to first high-frequency connector and at other end, to one end of transmitting line whose other end is connected to first spike; the latter is connected to first printed conductive pad on separating board. One end of second spike is connected to central conductor of second high-frequency connector, passed through holes in insulating substrates of third and fourth antenna elements in separating board and in printed conductors so that they have no electric contact with them and is connected to second printed pad on separating board. First and second high-frequency conductors are mounted on conductive screen and are used for connecting lead-in feeder to them. Transmitting line can be made in the form of asymmetric microstrip wherein printed conductor of first antenna element functions as ground strip. Transmitting line can be made in the form of coplanar line.

EFFECT: improved directivity pattern of multiband antenna, mainly in axial area, its outputs being highly isolated.

3 cl, 1 dwg