H - Electricity – 04 – B
Patent
H - Electricity
04
B
H04B 1/10 (2006.01) H03G 3/30 (2006.01)
Patent
CA 2194535
An anti-saturation circuit controls the gain of a variable-gain element in the front-end section of a receiver, responsive to a desired signal strength indicated by an indicator signal. The gain of the variable-gain element varies monotonically over a certain range, being reduced as the desired signal strength increases, in order to avoid intermodulation of the desired signal with an interfering signal. If the receiver also has an automatic-gain-control circuit, the automatic-gain-control signal is adjusted to compensate for the changing gain of the variable-gain element.
ircuit antisaturation contrôlant le gain d'un élément à gain variable dans la partie frontale d'un récepteur, sensible à une force de signal utile indiquée par un signal indicateur. Le gain de l'élément à gain variable varie de façon monotone sur une certaine plage, étant réduit lorsque la force du signal utile augmente, afin d'éviter l'intermodulation du signal utile avec un signal brouilleur. Si le récepteur est en outre muni d'un circuit de réglage automatique du gain, le signal de réglage automatique du gain est ajusté de façon à compenser le changement de gain de l'élément à gain variable.
Fetherstonhaugh & Co.
Oki Electric Industry Co. Ltd.
LandOfFree
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