Sampling system, pulse generation circuit and sampling circuit suitable for use in a sampling system, and oscilloscope equipped with a sampling system
First Claim
1. A sampling system comprising, a sampling circuit having a signal input for supplying a signal to be sampled and having a first and second pulse input for respectively supplying a first sampling pulse and a second sampling pulse in phase opposition, first and second sampling diodes coupling said signal input to a signal output of the sampling circuit, a pulse generation circuit, coupled to the sampling circuit via the pulse inputs, for generating the first and second sampling pulse, and means for balancing the sampling system, said balancing means comprising a microstrip transmission line symmetrically coupled between said first and second pulse inputs and said first and second sampling diodes.
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Accused Products
Abstract
A sampling system (1) comprises a sampling circuit (2) for supplying a signal to be sampled and a pulse generation circuit (3) for generating two sampling pulses, which are opposite in phase, for the sampling circuit (2). In order to achieve as good a balance as possible and in order to minimize the influence of parasitic effects which affect the balance, charge storage components are formed as the distributed capacitance of a symmetrically coupled microstrip transmission line (pt11). Triggering and DC biasing of a step recovery diode (D3) in the pulse generation circuit is carried out outside of the characteristic environment of the step recovery diode (D3) at a potential node (e3) of a reflection transmission line (rt11, rt12).
111 Citations
14 Claims
- 1. A sampling system comprising, a sampling circuit having a signal input for supplying a signal to be sampled and having a first and second pulse input for respectively supplying a first sampling pulse and a second sampling pulse in phase opposition, first and second sampling diodes coupling said signal input to a signal output of the sampling circuit, a pulse generation circuit, coupled to the sampling circuit via the pulse inputs, for generating the first and second sampling pulse, and means for balancing the sampling system, said balancing means comprising a microstrip transmission line symmetrically coupled between said first and second pulse inputs and said first and second sampling diodes.
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9. A sampling system comprising;
- a sampling circuit which comprises a signal input for supplying a signal to be sampled and having a first and second pulse input for respectively supplying a first sampling pulse and a second sampling pulse in phase opposition, a pulse generation circuit, coupled to the sampling circuit via the pulse inputs, for generating the first and second sampling pulse, said sampling circuit further comprising;
a first and a second sampling diode coupled to the signal input and first and second charge storage components, coupled to the first and the second sampling diode, for storing charge corresponding to the signal to be sampled, and means for balancing the system which comprise the charge storage components which are formed by a first coupled planar transmission line and a ground plane disposed opposite the first planar transmission line, a first end of the first planar transmission line being coupled to the first and the second sampling diode and a second end of said transmission line being coupled to the first and second pulse input. - View Dependent Claims (10, 11)
- a sampling circuit which comprises a signal input for supplying a signal to be sampled and having a first and second pulse input for respectively supplying a first sampling pulse and a second sampling pulse in phase opposition, a pulse generation circuit, coupled to the sampling circuit via the pulse inputs, for generating the first and second sampling pulse, said sampling circuit further comprising;
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12. A sampling system comprising;
- a sampling circuit having a signal input for supplying a signal to be sampled and having a first and second pulse input for respectively supplying a first sampling pulse and a second sampling pulse in phase opposition, a pulse generation circuit, coupled to the sampling circuit via the pulse inputs, for generating the first and second sampling pulse, wherein the pulse generation circuit comprises a step recovery diode triggered by a control circuit for forming a first and a second step-shaped signal, a first and a second reflection transmission line, coupled to the step recovery diode, for reflecting the step-shaped signals, and a first and second output coupling transmission line coupled to the step recovery diode, and means for balancing the sampling system which comprise the step recovery diode which is connected to a coupled planar transmission line and is situated between a first and a second end of the planar transmission line, the first end of the planar transmission line being coupled to the control circuit, the second end being coupled to a first and a second pulse output, the reflection transmission lines being formed by a section of the planar transmission line between the first end and the step recovery diode, and the output coupling transmission lines being formed by a section of the planar transmission line between the step recovery diode and the second end.
- View Dependent Claims (13, 14)
Specification