Amplification Device Incorporating Limiting
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Accused Products
Abstract
An amplification device (100) comprises an amplifier circuit (110) and a limiter (120). The amplifier circuit (110) comprises a signal input (111) for an input signal to be amplified and a first signal output (112) for a first output signal. The limiter (120) comprises a differential amplifier (125) comprising a first differential amplifier input (129) for a threshold control signal, a second differential amplifier input (113) for a feedback signal, and a differential amplifier output (124) for a threshold signal indicative of a difference between the threshold control signal and the feedback signal. The limiter (120) also comprises a first diode (121) having a first anode (122) coupled to the first signal output (112) and a first cathode (123) coupled to the differential amplifier output (124), and a feedback stage (128) coupled between the differential amplifier output (124) and the second differential amplifier input (113). The feedback stage (128) is arranged to generate the feedback signal dependent on the threshold signal.
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Citations
36 Claims
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1-18. -18. (canceled)
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19. An amplification device, comprising:
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an amplifier circuit comprising a signal input for an input signal to be amplified and a first signal output for a first output signal; and a limiter, wherein the limiter comprises; a differential amplifier comprising; a first differential amplifier input for a threshold control signal; a second differential amplifier input for a feedback signal; and a differential amplifier output for a threshold signal indicative of a difference between the threshold control signal and the feedback signal; a first diode having a first anode coupled to the first signal output and a first cathode coupled to the differential amplifier output; and a feedback stage coupled between the differential amplifier output and the second differential amplifier input, wherein the feedback stage is configured to generate the feedback signal dependent on the threshold signal. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. A receiving apparatus, comprising:
an amplification device, the amplification device comprising; an amplifier circuit comprising a signal input for an input signal to be amplified and a first signal output for a first output signal; and a limiter, wherein the limiter comprises; a differential amplifier comprising; a first differential amplifier input for a threshold control signal; a second differential amplifier input for a feedback signal; and a differential amplifier output for a threshold signal indicative of a difference between the threshold control signal and the feedback signal; a first diode having a first anode coupled to the first signal output and a first cathode coupled to the differential amplifier output; and a feedback stage coupled between the differential amplifier output and the second differential amplifier input, wherein the feedback stage is configured to generate the feedback signal dependent on the threshold signal.
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35. A radio communication apparatus, comprising:
a receiving apparatus comprising an amplification device, the amplification device comprising; an amplifier circuit comprising a signal input for an input signal to be amplified and a first signal output for a first output signal; and a limiter, wherein the limiter comprises; a differential amplifier comprising; a first differential amplifier input for a threshold control signal; a second differential amplifier input for a feedback signal; and a differential amplifier output for a threshold signal indicative of a difference between the threshold control signal and the feedback signal; a first diode having a first anode coupled to the first signal output and a first cathode coupled to the differential amplifier output; and a feedback stage coupled between the differential amplifier output and the second differential amplifier input, wherein the feedback stage is configured to generate the feedback signal dependent on the threshold signal. - View Dependent Claims (36)
Specification