Extended range composite head power sensor with three circuit branches having a common node
AssigneeLucas Weinschel, Inc.
InventorStephen F. Adam
Life of this patent
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Abstract
A probe for sensing radio frequency power, utilizing two independently-driven radio frequency-sensitive diodes. The two diodes are driven through a common RF input, through a branch network which separates and feeds the probe RF power to each diode independently. The diodes are unequally padded from the RF input, to provide an extended sensitivity range for the probe. One diode, therefore, operates in a lower dBm range, while the other diode operates in a higher dBm range. Two separate outputs are provided from the probe to supply a common power meter which monitors the appropriate output for the present power level of the radio frequency input.
Claims14
A power sensor for detecting the power of a signal from a signal source, comprising:
- (a) circuit means for dividing said signal having first, second and third branches having a common node,
- said first branch comprising first and second resistors, said first branch extending between the node and input means for receiving said signal,
- said second branch comprising a third resistor connected in series with a first diode for conduction of a signal within a first predetermined power range,
- said third branch comprising fourth and fifth resistors connected with a second diode for conduction of a signal within a second predetermined power range;
- and
- (b) said second and third branches extending from said node to output means responsive to the signals on said second and third branches for providing an output signal characteristic of the power level of the signal from the signal source.
A power sensor for determining the power level of a signal from a signal source, comprising:
- (a) input means for receiving the signal from said signal source;
- (b) circuit means for dividing the power of the signal having first, second and third branches having a common node,
- said first branch coupled to said input means and comprising first and second resistors,
- said second branch comprising a third resistor connected in series with first diode for conduction of a signal within a first predetermined power range,
- said third branch comprising fourth and fifth resistors connected with a second diode for conduction of a signal within a second predetermined power range;
- and
- (c) output means electrically connected to said second and third branches for providing an output signal characteristic of the power level of the signal produced by the signal source.
A power sensor for determining the power level of a signal from a signal source, comprising:
- (a) input means for receiving the signal from said signal source,
- (b) circuit means for dividing the power of the signal produced by the signal source having first, second and third branches having a common node, said first branch coupled to said input means and comprising first and second resistors,
- said second branch comprising third and fourth resistors connected with a first diode for conduction of a signal within a first predetermined power range,
- said third branch comprising fifth, sixth and seventh resistors connected with a diode for conduction of a signal within a second predetermined frequency range,
- (c) output means electrically connected to said fourth and seventh resistors whereby said fourth and seventh resistors provide an indication to the output means of the specific ranges of power across said second and third branches.
Dependencies are inferred from the claim text.