Abstract: A radio frequency antenna system is provided and can include a radio printed circuit board, a first antenna element located proximate an edge of the radio printed circuit board, a second antenna element located proximate the edge of the radio printed circuit board, and a cancelation circuit located on the radio printed circuit board and connected to feeding points of the first antenna and the second antenna, wherein the cancelation circuit can provide a cancelation effect at output ports of the cancelation circuit with respect to signals broadcast by the first antenna element and the second antenna element over air.

Abstract: A radio frequency antenna system is provided and can include a radio printed circuit board, a first antenna element located proximate an edge of the radio printed circuit board, a second antenna element located proximate the edge of the radio printed circuit board, and a cancelation circuit located on the radio printed circuit board and connected to feeding points of the first antenna and the second antenna, wherein the cancelation circuit can provide a cancelation effect at output ports of the cancelation circuit with respect to signals broadcast by the first antenna element and the second antenna element over air.

Abstract: A radio frequency antenna system is provided and can include a radio printed circuit board, a first antenna element located proximate an edge of the radio printed circuit board, a second antenna element located proximate the edge of the radio printed circuit board, and a cancelation circuit located on the radio printed circuit board and connected to feeding points of the first antenna and the second antenna, wherein the cancelation circuit can provide a cancelation effect at output ports of the cancelation circuit with respect to signals broadcast by the first antenna element and the second antenna element over air.

Abstract: A radio frequency antenna system is provided and can include a radio printed circuit board, a first antenna element located proximate an edge of the radio printed circuit board, a second antenna element located proximate the edge of the radio printed circuit board, and a cancelation circuit located on the radio printed circuit board and connected to feeding points of the first antenna and the second antenna, wherein the cancelation circuit can provide a cancelation effect at output ports of the cancelation circuit with respect to signals broadcast by the first antenna element and the second antenna element over air.

Abstract: Circuit board antenna structures and systems are described herein. One circuit board antenna structure, includes a circuit board, a u-shaped antenna body having a first elongate portion and a second elongate portion separated by a short portion and arranged such that the first elongate portion is positioned closer to the circuit board, the second elongate portion being longer than the first elongate portion and having a feeding probe extending from the second elongate portion and attached to the circuit board, and the second elongate portion also having a grounding probe extending from the second elongate portion and attached to the circuit board.

Abstract: For individual reception of signals of television, radio and other services provided for by means of geostationary telecommunication satellites there is designed a change-over switch of external units of fixed aerials with a system of individual switches controlled by means of standard pulses generated by a satellite receiver. The change-over switch is provided with a command decoding unit (7), having an input (71) being connected to an output terminal (4) for connection to a satellite receiver and outputs (72) being connected to control inputs of individual switches, while the command decoding unit (7) is provided with a circuitry for a transfer of mechanical positioning equipment standard control commands to pulses controlling individual switches (2).

Abstract: For individual reception of signals of television, radio and other services provided for by means of geostationary telecommunication satellites there is designed a change-over switch of external units of fixed aerials with a system of individual switches controlled by means of standard pulses generated by a satellite receiver. The change-over switch is provided with a command decoding unit (7), having an input (71) being connected to an output terminal (4) for connection to a satellite receiver and outputs (72) being connected to control inputs of individual switches, while the command decoding unit (7) is provided with a circuitry for a transfer of mechanical positioning equipment standard control commands to pulses controlling individual switches (2).