Abstract: One embodiment discloses an antenna structure. An antenna structure comprises: a ground plane; a transmit balanced to unbalanced (BALUN) circuit comprising a first transmit connector coupled to a combined transmit port, and a second transmit connector coupled to the combined transit port; a receive BALUN circuit comprising a first receive connector coupled to a combined receive port, and a second receive connector coupled to the combined receive port; a transmit antenna element comprising a first transmit antenna sub-element coupled to the first transmit connector and a second transmit antenna sub-element coupled to the second transmit connector; a receive antenna element independent from the transmit antenna element and comprising a first receive antenna sub-element coupled to the first receive connector and a second receive antenna sub-element coupled to the second receive connector, wherein the transmit antenna element and the receive antenna element are orthogonally-polarized with respect to each other.

Abstract: One embodiment discloses an antenna structure. An antenna structure comprises: a ground plane; a transmit balanced to unbalanced (BALUN) circuit comprising a first transmit connector coupled to a combined transmit port, and a second transmit connector coupled to the combined transit port; a receive BALUN circuit comprising a first receive connector coupled to a combined receive port, and a second receive connector coupled to the combined receive port; a transmit antenna element comprising a first transmit antenna sub-element coupled to the first transmit connector and a second transmit antenna sub-element coupled to the second transmit connector; a receive antenna element independent from the transmit antenna element and comprising a first receive antenna sub-element coupled to the first receive connector and a second receive antenna sub-element coupled to the second receive connector, wherein the transmit antenna element and the receive antenna element are orthogonally-polarized with respect to each other.

Abstract: One embodiment discloses an antenna structure. An antenna structure comprises: a transmit antenna element comprising a plurality of transmit antenna sub-elements; a receive antenna element comprising a plurality of receive antenna sub-elements, wherein the transmit antenna element and the receive antenna element are orthogonally-polarized with respect to each other; a ground plane defining a reflector for the antenna structure; at least one electronic component coupled with the ground plane, the at least one electronic component comprising: a transmit balanced to unbalanced (BALUN) circuit configured to split a transmit signal from a transmitter into two balanced transmit signals, wherein the plurality of transmit antenna sub-elements are coupled to the transmit BALUN; and a receive BALUN circuit configured to combine feeds from the plurality of receive antenna sub-elements into a receive single output to a receiver.

Abstract: One embodiment discloses an antenna structure. An antenna structure comprises: a transmit antenna element comprising a plurality of transmit antenna sub-elements; a receive antenna element comprising a plurality of receive antenna sub-elements, wherein the transmit antenna element and the receive antenna element are orthogonally-polarized with respect to each other; a ground plane defining a reflector for the antenna structure; at least one electronic component coupled with the ground plane, the at least one electronic component comprising: a transmit balanced to unbalanced (BALUN) circuit configured to split a transmit signal from a transmitter into two balanced transmit signals, wherein the plurality of transmit antenna sub-elements are coupled to the transmit BALUN; and a receive BALUN circuit configured to combine feeds from the plurality of receive antenna sub-elements into a receive single output to a receiver.

Abstract: A program for partitioning a centrally developed industrial control program into component that may be download to distributed devices for execution and control of an industrial process divides elements of the control program into spatially linked elements which are associated with physical devices that have defined locations and spatially independent elements that have no defined location within the control structure. The spatially linked elements are grouped together according to their proximity and the spatially independent elements are assigned to those groupings so as to minimize communications between the various links. The cost of the grouping, the band width of the signals and the capabilities of the modules are also considered.

Abstract: A highly distributed industrial control system employs a number of separate control modules communicating together on a shared communications medium. Each module emulates one or more basic electrical parts having electrical terminals, such as switches and relays, and transmits production messages indicating the state of the parts, such as conducting current or not. A connection list for each part in each control module defines message identifiers of other parts whose production messages are received by the control module and interpreted as current flow to one or more of its parts. The control system is programmed by generating a schematic on a programming terminal showing connections of terminals on symbols of the parts such as would represent actual wiring of the emulated parts. A parts layout diagram is used in conjunction with the schematic to identify each part to a physical module.