Pulse generating circuit and sampling circuit
AssigneeAdvantest Corporation
InventorAkihiro Kawata
Life of this patent
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Abstract
There is provided a pulse generating circuit, which generates two pulses having a sign of amplitude different from each other, including: a step recovery diode of which electric potential of an anode and a cathode is respectively output as the pulses; a bias unit operable to select either a forward bias or a backward bias according to a given control signal and apply the selected bias to the step recovery diode; a forward current source operable to prescribe a forward current to be supplied to the step recovery diode when the forward bias is applied to the step recovery diode; and a backward current source operable to prescribe a backward current to be supplied to the step recovery diode when the backward bias is applied to the step recovery diode.
Claims10
A pulse generating circuit that generates two pulses having sign of amplitude different from each other, comprising:
- a step recovery diode of which electric potential of anode and cathode is respectively output as the pulses;
- a bias unit operable to select either a forward bias or a backward bias according to a given control signal and apply the selected bias to said step recovery diode;
- a forward current source operable to prescribe a forward current to be supplied to said step recovery diode when the forward bias is applied to said step recovery diode;
- and
- a backward current source operable to prescribe a backward current to be supplied to said step recovery diode when the backward bias is applied to said step recovery diode.
A sampling circuit that samples given input signals, comprising:
- a pulse generating circuit operable to generate two pulses having sign of amplitude different from each other, for sampling the input signals;
- and
- a sampling unit operable to receive the input signals and the pulses and sample the input signals based on the pulses, wherein
- said pulse generating circuit comprises:
- a step recovery diode of which electric potential of anode and cathode is respectively output as the pulses;
- a bias unit that applies a forward bias or a backward bias to the step recovery diode;
- a forward current source that prescribes a forward current supplied to the step recovery diode when the forward bias is applied to the step recovery diode;
- and
- a backward current source that prescribes a backward current to be supplied to the step recovery diode when the backward bias is applied to the step recovery diode.
Dependencies are inferred from the claim text.