Abstract:
The invention relates to an integrated electronic circuit with a semiconductor substrate and at least one inductor that is characterized in that below said inductor at least one silicide layer (30) is located.
Abstract:
VCO (voltage controlled oscillator) circuits can be manufactured with integrated semiconductor circuits which contain electrical resonant circuits, the resonance behaviour of which may be altered by means of a varactor (2), in other words, a capacitor with variable capacitance. Varactors (2) are nowadays produced with a MOSFET structure, thus comprising a gate electrode (3) and one source- (6) and one drain-implant (7) each, where the latter are electrically short-circuited and, together with the semiconductor substrate beneath the gate electrode (3), form one of the two capacitor plates. According to the invention, the capacitance ratio of the maximum capacitance to the minimum capacitance of such a varactor (2) may be increased, whereby the source- and drain-implants (6, 7) are arranged completely outside the base surface (8) of the layer stack (5) of the gate electrode (3) in the lateral direction and the semiconductor substrate (1), beneath the gate oxide layer (4), between the source-implant (6) and the drain-implant (7) is homogeneously doped in the lateral direction.
Abstract:
Disclosed is an integrated tuneable capacitor provided with a semiconductor area (2) which is preferably N-doped and formed in a semiconductor body (1); an insulating thick oxide area (4) whose surface borders on the main side (3) of the semiconductor body (2); and a thin oxide area (5) which is also adjacent to the main side (3) and which is arranged on the above the semiconductor area (2) in addition to having a lower layer thickness than the thick oxide area (4). A gate electrode (6) is placed on the thin oxide area (5) and connection areas (7) are provided in the semiconductor area (2). The inventive capacitor has a greater tuning range in comparison with transistor varactors. The integrated tuneable capacitor can be used, for instance, in LC oscillators in integrated VCOs.
Abstract:
The invention relates to an integrated electronic circuit, comprising a semiconductor substrate and at least two inductors. According to the invention, the integrated electronic circuit is characterised in that the inductors have axes extending essentially parallel to at least one structural plane of the semiconductor substrate.
Abstract:
The invention relates to a circuit arrangement (300). The circuit arrangement (300) contains a load element (302) and a clock pulse generator (301) which is configured in such a way that it can provide the load element (302) with a clock pulse signal. The circuit arrangement (300) also contains at least one injection locked oscillator circuit which is arranged between the clock pulse generator (301) and the load element (302).
Abstract:
Disclosed is an integrated circuit (100) comprising a mixer circuit and a transformer (101). Said mixer circuit is provided with an active mixer unit (102), a signal-amplifying unit (103), two reference oscillator connections (LO+, LO-), two high-frequency connections (RF+, RF-), and two intermediate-frequency connections (IF+, IF-). The inventive integrated circuit (100) is arranged such that the transformer (101) galvanically isolates the two high-frequency connections (RF+, RF-) from the active mixer unit (102).<>
Abstract:
Oszillator, welcher Folgendes umfasst:eine Tankschaltung undeine Oszillatorkernschaltung, welche mehrere über Kreuz geschaltete Verbundtransistoren umfasst, die mit der Tankschaltung gekoppelt sind, wobei jeder der mehreren Verbundtransistoren einen Bipolartransistor und einen Feldeffekttransistor (FET) mit einer Source-Elektrode, welche mit einer Basis des Bipolartransistors gekoppelt ist, umfasst, wobei eine Drain-Elektrode des FETs mit einem Kollektor des Bipolartransistors gekoppelt ist.
Abstract:
Ein Pulsweitenmodulationssystem umfasst eine analoge Komponente und eine digitale Komponente. Die analoge Komponente wird betrieben, um ein Lokaloszillatorsignal mit unterschiedlichen Phasenverschiebungen zu trennen und einen Versatz (d. h. eine Zeitverzögerung) zu analogen Signalen einzuführen, die an einem Eingang empfangen werden, mit einem Abstimmungsbetrieb, der die analogen Signalen in dem analogen (kontinuierlichen Zeit-)Bereich feinabstimmt. Die analoge Komponente umfasst eine Mehrzahl von analogen Verzögerungsleitungen, die jeweils Trägersignale mit unterschiedlichen Phasenverschiebungen verarbeiten. Digitale Verzögerungsleitungen wandeln die analogen Signale zu digitalen Rechteckwellen mit der gleichen Zeitverzögerung und mit der gleichen Auflösung wie das analoge Ausgangssignal um.