Symmetrical polyphase networks utilizing constant reactances

Claim 2

A symmetrical polyphase network comprising: N single-phase networks, a different one coupled to each phase of an N-phase input signal, where N is an integer greater than one; each of said single-phase networks including at least one constant reactance so that said polyphase network responds differently to input signals of negative and positive frequencies, the reactance value of said constant reactance being different than zero.

Claim 3

A polyphase network according to claim 1, wherein each of said constant reactances includes an N-port symmetrical gyrator, each of said N ports being coupled to a different one of said single-phase networks.

Claim 4

A polyphase network according to claim 1, wherein each of said constant reactances includes an N-phase l to j impedance transformer, where j is equal to -

Claim 5

A polyphase network according to claim 3, wherein said impedance transformer includes N circuits each having a transistor with its collector-emitter circuit connected in series between the input and output terminals of its associated one of said circuits, and its base coupled to the collector of said transistor in another one of said circuits.

Claim 6

A polyphase network according to claim 4, wherein N is equal to four; and the base of said transistor in one of said circuits is directly connected to the collector of said transistor in another of said circuits receiving as an input signal a signal lagging in phase with respect to the phase of the input signal coupled to said one of said circuits.

Claim 7

A polyphase network according to claim 4, wherein N is equal to two; said transistor of one of said circuits includes a first transistor; and said transistor of the other of said circuits includes a second transistor, the base of said second transistor being directly connected to the collector of said first transistor; and further including a third transistor network coupling the base of said first transistor to the collector of said second transistor.

Claim 8

A polyphase network according to claim 6, wherein said third transistor network includes a third transistor, an electrical power supply, a first resistor coupling the emitter of said third transistor to one terminal of said power supply providing a given potential, means directly connecting the collector of said third transistor to the base of said first transistor, a second resistor coupling the collector of said third transistor to the other terminal of said power supply providing a potential lower than said given potential, and means directly connecting the base of said third transistor to the collect or of said second transistor. 8 A polyphase network according to claim 4, wherein N is equal to three; and further including a fourth transistor network couPling the collector of said transistor of each of said circuits to the base of said transistor of an adjacent one of said circuits.

Claim 9

A polyphase network according to claim 8, wherein said fourth transistor network coupled to two adjacent ones of said circuits includes an electrical power supply, a fourth transistor having its base directly connected to the collector of said transistor in one of said two adjacent ones of said circuits and its collector directly connected to one terminal of said power supply providing a given potential, a first resistor coupled between the emitter of said fourth transistor and the other terminal of said power supply providing a potential greater than said given potential, and a potentiometer coupled between the emitter of said fourth transistor and the base of said transistor in the other of said two adjacent ones of said circuits, said potentiometer including a second resistor having a first terminal connected to the emitter of said fourth transistor and a second terminal, and a third resistor having a first terminal directly connected to said second terminal of said second resistor and a second terminal connected to the emitter of a transistor included in said fourth transistor network coupled to another two adjacent ones of said circuits, said second resistor having a value one-half of the value of said third resistor, the base of said transistor in said other of said two adjacent ones of said circuits being directly connected to said second terminal of said second resistor and said first terminal of said third resistor.

Claim 10

A polyphase network according to claim 3, wherein N is equal to two; and said impedance transformer includes two circuits each having a transistor with its emitter-base circuit connected in series between the input and output terminals of its associated one of said circuits; the base of said transistor in one of said circuits being directly connected to the collector of said transistor in the other of said circuits; and a third transistor network coupling the base of said transistor in said other of said circuits to the collector of said transistor in said one of said circuits.

Claim 11

A polyphase network according to claim 10, wherein said third transistor network includes a third transistor, an electrical power supply, a first resistor coupling the emitter of said third transistor to one terminal of said power supply providing a given potential, means directly connecting the base of said third transistor to the collector of said transistor of said one of said circuits, a second resistor coupling the base of said third transistor to the other terminal of said power supply providing a potential higher than said given potential, and means directly connecting the collector of said third transistor to the base of said transistor in said other of said circuits.

Claim 12

A polyphase according to claim 1, wherein each of said constant reactances includes an N phase 1 to -j impedance transformer, where j is equal to -1.

Claim 13

A polyphase network according to claim 12, wherein N is equal to four; and said impedance transformer includes four circuits each having a transistor with its collector-emitter circuit coupled in series between the input and output terminals of its associated one of said circuits and its base connected to the collector of said transistor in an adjacent one of said circuits receiving as an input signal a signal leading in phase with respect to the phase of the input signal coupled to said associated one of said circuits.

Claim 14

A polyphase network according to claim 12, wherein N is equal to three; and said impedance transformer includes three circuits each having a transistor with its collector-emitter circuit coupled in series between the input and output terminals of its associated one of said Circuits, and a fourth transistor network coupling the base of said transistor of said associated one of said circuits to the collector of said transistor of said associated one of said circuits.

Claim 15

A polyphase network according to claim 14, wherein said fourth transistor network includes an electrical power supply, a fourth transistor, means directly connecting the base of said fourth transistor to the collector of said transistor of said associated one of said circuits, means directly connected to one terminal of said power supply providing a given potential, a first resistor coupling the emitter of said fourth transistor to the other terminal of said power supply providing a potential higher than said given potential, a second resistor coupling the emitter of said fourth transistor to the base of said transistor of said associated one of said circuits, and a third resistor coupling the junction of said second resistor and the base of said transistor of said associated one of said circuits to the emitter of a transistor included in said fourth transistor network of an adjacent one of said circuits, the value of said third resistor being one-half the value of said second resistor.

Claim 16

A polyphase network according to claim 1, wherein N is equal to three; and said constant reactance includes a three-phase impedance transformer of one of a three-phase l to h impedance transformer and a three-phase l to 1/h impedance transformer, where h is equal to e j2 3.

Claim 17

A polyphase network according to claim 16, wherein both of said l to h and l to 1/h impedance transformers include three circuits each having a transistor with its collector-emitter circuit coupled in series between the input and output terminals of its associated one of said circuits and its base directly connected to the collector of said transistor of an adjacent one of said circuits; a source of voltage V coupled to the first of said circuits; a source of voltage Vh coupled to the second of said circuits; and a source of voltage Vh2 coupled to the third of said circuits.

Claim 18

A polyphase network according to claim 17, wherein said 1 to h impedance transformer includes in each of said circuits the base of said transistor in said associated one of said circuits being directly connected to the collector of said transistor in an adjacent one of said circuits receiving as an input signal a signal leading in phase with respect to the phase of the input signal coupled to said associated one of said circuits.

Claim 19

A polyphase network according to claim 17, wherein said l to 1/h impedance transformer includes in each of said circuits the base of said transistor in said associated one of said circuits being directly connected to the collector of said transistor in an adjacent one of said circuits receiving as an input signal a signal lagging in phase with respect to the phase of the input signal coupled to said associated one of said circuits.