# US 2014/0191820 A1 · Coaxial-impedance synthesizer

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- Number: US 2014/0191820 A1
- Document ID: US20140191820A1
- Status: Published application
- Kind: A1
- Application number: 14/005,539
- Filed: 2012-03-19
- Published: 2014-07-10
- Earliest claimed: 2011-03-18
- Inventors: Arnaud Curutchet
- Web page: https://patentgrep.com/patent/US20140191820A1

## CPC

- H03H 7/38: Impedance-matching networks
- H01P 5/04: with variable factor of coupling
- H03H 7/40: Automatic matching of load impedance to source impedance
- H03H: IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS (waveguides, resonators, lines or other devices of the waveguide type H01P)
- H01P: WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE (operating at optical frequencies G02B)

## Abstract

The invention relates to a coaxial-impedance synthesizer, comprising: a longitudinal central (0x) conductor (1); an outer conductive tube (2) arranged coaxially to the conductor (1); and at least one probe (4) mounted so as to longitudinally translate around the conductor (1), the coaxial-impedance synthesizer being characterized in that the outer tube (2) includes two separable half-tubes, such that the probe (4) is permitted to move longitudinally, relative to the central conductor (1), to a desired position when the two half-tubes are spaced apart from each other, and when the two half-tubes are near each other, the outer periphery of the probe (4) and the inner wall of the outer tube are in contact with each other.

## Claims

### Claim 1

A coaxial impedance synthesizer, comprising:
a central longitudinal conductor,
an outer conductive tube coaxial with the conductor,
at least one probe mounted around the conductor in longitudinal translation, wherein:
the outer tube comprises two separable half-tubes, so that:
the probe is allowed to move longitudinally relative to the central conductor to a desired position when the two half-tubes are in a position away from each other, and
when the two tubes are in a position of mutual proximity, the outer periphery of the probe and the inner wall of the outer tube are in contact.

### Claim 2 (depends on 1)

An impedance synthesizer according to claim 1, wherein the probe comprises two fastening legs each located in a space separating the two half-tubes.

### Claim 3 (depends on 1)

An impedance synthesizer according to claim 1, wherein the two half-tubes are separable, by translation along an axis perpendicular to the central longitudinal conductor, or by rotation about an axis perpendicular to the central longitudinal conductor, or by rotation around an axis parallel to the central longitudinal conductor.

### Claim 4 (depends on 3)

An impedance synthesizer according to claim 3, including an actuator for the mutual displacement of the two half-tubes.

### Claim 5 (depends on 1)

An impedance synthesizer according to claim 1, wherein the probe has at least two parts, releasably fixed to each other, so that the probe can be removably mounted around the conductor.

### Claim 6 (depends on 5)

An impedance synthesizer according to claim 5, including an actuator for the two parts.

### Claim 7 (depends on 2)

An impedance synthesizer according to claim 2, including an actuator acting at the fastening leg.

### Claim 8 (depends on 1)

An impedance synthesizer according to claim 1, wherein, when the two half-tubes are in a position of mutual proximity, the outer periphery of the probe and the inner wall of the outer tube are in contact along the entire periphery of the probe.

### Claim 9 (depends on 1)

An impedance synthesizer according to claim 1, including a plurality of probes.

### Claim 10 (depends on 9)

An impedance synthesizer according to claim 9, including a group of at least two probes sharing at least one common fastening leg.

### Claim 11 (depends on 1)

A method for synthesizing an impedance in an impedance synthesizer according to claim 1, comprising the steps of:
generating a mutual spacing away of the two half-tubes,
longitudinally moving the probe relative to the central conductor to a desired position,
positioning the two half-tubes in a position of mutual proximity, so as to cause the outer periphery of the probe to contact the inner wall of the outer tube, so as to provide an impedance synthesis.