DE1273615C2 - NON-RECIPROCAL REACTANCE AMPLIFIER ARRANGEMENT - Google Patents

Description

60 marked two terminals is the input side

The invention relates to a non-reciprocal signal circle and to the right of the terminal designated by 2

Reactance amplifier arrangement, preferably for Mimens the signal circuit on the output side. The signal source

krowellen, consisting of a chain circuit of a 6 _S with its internal resistance R _s is in the

Up and a down mixer, the non-F i g. 1 shown equivalent circuit inductively to the

linear conductance achieved by capacitance diodes 65 coupled to the signal circuit on the input side. This one will

which are pumped in different phases, being formed by the π-element with the series inductance

the two mixers have a common resonance system L ₇ -, and the two transverse capacitances C _ri in connection

is that for the purpose of performance adjustment and connection with the induction circuit effective in the input circuit

activity L _{1 of} the coupling of the signal source. The signal circuit on the output side is structured in the same way. It consists of the inductance L _Ts arranged in the series branch and the two transverse capacitances C _{T 2} , which, with L ₇ -, form a π element which is inductively coupled to the load cell R _{L via L 2.} In between is the common auxiliary circle. With regard to the auxiliary circuit, the signal circuits with their conductance values between terminals 1-1 and 2-2 at the pump frequency f _b and the two auxiliary frequencies f _{b + s} and / ₆ _ _{s can be} regarded as a short circuit.

With this assumption, this follows in FIG. 2 represented substitute image of the auxiliary circuit for the two auxiliary frequencies and the pump frequency. The two parallel nonlinear conductance values D ₁ and D ₂ are connected in parallel by the two-pole Y and the pump generator, represented by the pump source S ₆ and the associated internal resistor 3 _ft. The conductance of the capacitance diode, denoted _{by D 1} in FIG. 1, has a junction capacitance Cj ₁ , a series inductance L ₅ , and a series resistance R _Sl . The series connection of these three elements has the corresponding housing capacitance C ₀ , in parallel. Correspondingly, the elements of the non-linear second conductance D ₂ , which is also formed by a capacitance diode, are denoted by R _Ss , C ₁ , L ₅₂ and the housing capacitance lying parallel to this is denoted _{by C 02.} Under certain conditions, namely when the sizes of the non-linear conductance values formed by the diodes have certain favorable values, the two-pole Y can only consist of an inductance and a capacitance for neutralization. In general, however, there will be a susceptibility in connection with a frequency-dependent conductance. The mentioned frequency-dependent conductance can be realized, for example, by the internal conductance of the pump generator coupled via a reactance.

In FIG. 3 shows a possible embodiment of the amplifier according to the invention in section. The construction was carried out coaxially, with / representing the inner conductor and M the outer sheath that shields it. The input E of the arrangement, like the output A , is designed in a known manner with the aid of a coupling loop which is passed through the jacket M and is insulated. The required non-linear conductance values D ₁ and D ₂ are inserted into the train of the inner conductor /. The input and output-side signal circuit of the arrangement is denoted by _{S 1} and S _a. To block the pumping and auxiliary frequencies, low-pass filters T ₁ and T _{2 are inserted between the DC voltage supply Z 1} and Z. and the two diodes D ₁ and D ₂ , which in the illustrated embodiment are formed by disc-shaped thickenings of the inner conductor /. As already described at the beginning, a neutralization of the reaction

IS conductance of the arrangement made. In the embodiment of the invention shown in FIG. 3, this is effected, inter alia, by a neutralization capacitor C _n. This capacitor is located between the jacket M of the

ao coaxial arrangement and the common connection point of the two mixer diodes D ₁ and D ₂ . The connection line of this neutralization capacitor C ^ with the common point of the two diodes D ₁ and D ₂ is in this case designed as an inductance L at the same time. This overall arrangement represents the passive two-terminal circuit denoted by Y in the equivalent circuit diagram in FIGS. 1 and 2. The above-mentioned neutralization of the retroactive conductance is thus effected in the described arrangement by a T-circuit in which the neutralization capacitor C _{n forms} the shunt arm. Notwithstanding this, it is also possible to neutralize the retroactive conductance by means of a .7 circuit, as has already been suggested elsewhere.

The pump oscillator P with its internal resistance Rj is in the illustrated embodiment of FIG. 3 via a coupling inductance L ₁ , coupled to the common point of the two mixer diodes D ₁ and D _2.

The invention also has the advantage that the product of bandwidth times gain becomes a maximum, which is desirable in such amplifiers.

For this purpose 2 sheets of drawings

Claims (4)

Reinforcement for both the Patent applications for the same level as for the operation ^F * auxiliary frequency required in frequency reversal : 1. Shows non-reciprocal reactance or even stronger arrangement resonance behavior, where the preferably for microwaves, consisting of 5 conductivity of the mixer chain between input and outlet a glue circuit of an upward and a gear through a linear, passive and reciprocal a down mixer whose non-linear LeH two-pole is neutralized. ...... values are realized by varactor diodes, a non-reciprocal amplifier circuit of this type that are pumped in different phases, whereby a resonance system has become common to both mixers through the German patent specification 1107 297, whereby one mixer is emen sam, which is non-linear for the purpose of power adjustment real conductance, the other mixer and amplification both in the case of the non-linear susceptibility value for operation 15 stronger arrangement, consisting of the chain circuit, feedback conductance of the mixer chain between two parametric or tunnel diode mixers, input and output through a linear, pas- which of different-phase pump voltages sive and reciprocal two-pole neutral is alized, durchgesteueit is further characterized by the German that this patent 1112140 is previously known. .
Diodes (D ₁ , D ₂ ), which with respect to the auxiliary frequency ao by the DT-AS 11 75 294 is also already a zen parallel and to which the two-pole (Y) parametric amplifier is previously known, which is connected from two in parallel, in such a way arranged and di- arranged capacitance in a bridge damage are dimensioned that their parasitic elements, diodes and in which the frequency of the differences is essentially their series inductances (L _Sl , reference frequency oscillations due to the natural resonance L ₅₂ ), housing _{capacitances (Q 1} , C _C2 ) and Series »5 of the circle with capacitance diodes is established.
resistances (R _Sv /? _s "), together with the each- Through the BE-PS 6 31541 is also a lingering barrier layer capacitances (C ,,, C,") the stronger circuit with a single non-linear required, at the auxiliary frequencies resonance reactance known, which form a system capable of acting as a reflection amplifier, and that the pump frequency and an input and an output circuit are selected in such a way that they require the resonance of the series. The output circuit is formed by the circle (Ä _Sl , C _n , L _Sl ; Ä _Sa , Cy ₂ , L ₅₂ ) of the diodes natural resonance of the diode, which _{corresponds to the (D 1} , D ₂ ) and that for setting the middle Barrier layer capacitance and the series circuit different-phase pumping, the barrier layering of the self inductance and the housing capacitance (C _h , C ₁₂ ) are detuned in such a way that the diode is given
that the phase difference is achieved (Fig. 2). 35 The aim of the present invention is the initially 2. Arrangement according to claim 1, characterized in that the reactance amplifier arrangement described is such that, in the course of a coaxial expansion, the diodes (D ₁ , D ₂ ) make do with a part of the inner elements with a minimum of scltialtformation. Conductor (/) form that the two-pole (Y) consists of a starting from the non-inductance described above, which is achieved by the common 40 reciprocal reactive amplifier arrangement, this point of these diodes (D ₁ , D ₂ ) to the outer jacket according to the invention in that these diodes, (M) of the coaxial arrangement and one which are parallel with respect to the auxiliary frequencies and capacitance (Q) which is formed by the fact that the two-pole is connected in parallel with the end face of the inductance (L) being arranged and dimensioned opposite to that, that their parasi-outer sheath (M) is enlarged accordingly. 45 tary elements, essentially their series induction 3. Arrangement according to claim 2, characterized in that the inner conductor (/) between the voltage supply (Z ₁ , Z ₈ ) and the diodes the necessary resonance (D ₁ , D ₂ ) provided with such thickenings form capable system and that the pump frequency is such that this is selected as low-pass filters (T ₁ , T ₂ ) for the pump 50, that they serve the resonance of the series circuit frequency and auxiliary frequency (F i g. 3). corresponds to the diodes and that for setting the 4. Arrangement according to claim 2 or 3, since different-phase pumping the barrier layer characterized in that the pump oscillator (P) are muted in such a way that the phase difference is achieved via a common point of the two. This means that an additional inductance (L _p ) connected to the _{diode (D 1} , D ₂ ) is no longer required.
is coupled. In the following, the invention will be explained in more detail with reference to the figures. F i g. 1 shows the equivalent circuit of the amplifier with concentrated elements. On the left the one loaded with 1