Method and apparatus for electrically adjusting delay in...

H - Electricity – 04 – B

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H04B 3/04 (2006.01) H01P 1/22 (2006.01) H01P 5/12 (2006.01) H03H 7/18 (2006.01)

Patent

CA 2538969

An apparatus and method for providing an electrically adjustable RF delay in which a splitter splits an input signal into two signal paths, one signal path providing a delay fixed at an integral number of wavelengths of a desired center frequency and both signal paths providing electrically adjustable attenuation. A combiner combines the signals passing through the signal paths, such that the sum of the electrically-adjustable attenuation provided by the signal paths adds to unity, whereby the input signal is delayed by an adjustable time depending upon the attenuations provided by the signal paths.

L'invention concerne un appareil et un procédé pour produire un retard RF pouvant être réglé électriquement, dans lesquels un diviseur divise un signal d'entrée en deux chemins de signal, l'un des chemins produisant un retard fixe à un nombre entier de longueurs d'onde d'une fréquence centrale voulue, et les deux chemins produisant une atténuation pouvant être réglée électriquement ; un combineur combine les signaux parcourant les chemins de signal, de sorte que la somme de l'atténuation réglable électriquement produite par les chemins de signal égale un, le signal d'entrée étant retardé d'une valeur temporelle réglable qui dépend des atténuations produites par les chemins de signal.

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