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US3571702A Expired / Lapsed US ⏱️ 0.0 years remaining

Apparatus for the wide-band impedance measurement of micro-wave circuits in micro-wave multiple-pole arrangements

Assignee: Tavkoezlesi Kutato Intezet
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Filing: 1967-10-30
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Granted: 1971-03-23
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Expires: 1987-10-30
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Abstract

Abstract A process for the wideband measurement of the impedance of microwave current circuits in microwave multiple pole arrangements, i.e., N ports. Into at least one cavity resonator comprised by the N port to be measured a signal is introduced which is so reflected by adjustable reference planes that, in the event of resonance, the signal reflected via the N-port to be measured from the corresponding reference planes is compared with signals introduced into the individual cavity resonators. In the cavity resonators the geometrical spacings (electrical lengths) existing between any desired reference planes are transmitted in the form of electrical signal differences to the indicator apparatus of a synchro receiver system. By means of the tuning elements of the cavity resonators, which are moved in synchronism with the wobbulators energizing the cavity resonators, there is a flow through the corresponding frequency band such that the signals reflected by the reference planes of the cavity resonators are transformed with the aid of the systems assembled therewith (microwave, low frequency, electromechanical systems). The impedances to be measured are continuously indicated in dependency on the frequency.

Inventors

  • 👤 Laszlo Hartner

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 14:51
CPC Classifications
G; G01; G01R; G01R27/00; G01R27/28; G01R27/32

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 272 words
The apparatus for the wide band measurement of the impedance in a microwave N-port comprising: a generator system; a phase angle meter; a reflection coefficient meter; and an impedance meter; said generator system containing a wobbulator having a plurality of outputs, an automatic regulator, a detector, an amplifier, a servomotor, and a cavity resonator system having at least one cavity resonator element and a tuning element for each resonator element, one output of said wobbulator connected to the input of said automatic regulator, another output connected to the input of each resonator element, the automatic regulator, detector, amplifier and servomotor connected in series and the output of said servomotor system being connected to control each tuning element; said phase angle meter containing a synchro transmitter system, a detector, a comparator, an amplifier, a synchro receiver, a phase indicating element and a level regulator, the input to said transmitter being connected to said output of said servosystem and to said level detector, the detector of said transmitter, the comparator, the amplifier of said transmitter and said receiver being connected between said transmitter and said phase indicating element; said reflection coefficient meter containing a directional coupler pair and a ratio meter, said directional coupler adapted for coupling the impedance under test to the output of said cavity resonator system and said ratio meter connected to the outputs of said directional coupler pair; and said impedance meter containing a two-ray oscillograph having a pair of inputs, a further output of said ratio meter connected to one input of said oscillograph and the output of said receiver being connected to the other input of said oscillograph.
Claim 2
Independent Claim 272 words
The apparatus for the wide band measurement of the impedance in a microwave N-port comprising: a generator system; a phase angle meter; a reflection coefficient meter; and an impedance meter; said generator system containing a wobbulator having a plurality of outputs, an automatic regulator, a detector, an amplifier, a servomotor, and a cavity resonator system having at least one cavity resonator element and a tuning element for each resonator element, one output of said wobbulator connected to the input of said automatic regulator, another output connected to the input of each resonator element, the automatic regulator, detector, amplifier and servomotor connected in series and the output of said servomotor system being connected to control each tuning element; said phase angle meter containing a synchro transmitter system, a detector, a comparator, an amplifier, a synchro receiver, a phase indicating element and a level regulator, the input to said transmitter being connected to said output of said servosystem and to said level detector, the detector of said transmitter, the comparator, the amplifier of said transmitter and said receiver being connected between said transmitter and said phase indicating element; said reflection coefficient meter containing a directional coupler pair and a ratio meter, said directional coupler adapted for coupling the impedance under test to the output of said cavity resonator system and said ratio meter connected to the outputs of said directional coupler pair; and said impedance meter containing a two-ray oscillograph having a pair of inputs, a further output of said ratio meter connected to one input of said oscillograph and the output of said receiver being connected to the other input of said oscillograph.

References Cited (Backward Citations)

US2520604A Cited
US2682033A Cited
US3199024A Cited
US3398364A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-03-22 1974-09-21 1975-03-23 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-03-22 1978-09-21 1979-03-23 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-03-22 1982-09-21 1983-03-23 $7700.00 Window Closed / Lapsed

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