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Manual Tuners / Impedance Tuners

Slide Screw Tuners - Standard Matching Ranges & Wide Matching Range

Standard Matching Ranges


Description

Slide screw tuners are particularly suited to establishing impedances for device characterization or any other application requiring a precisely repeatable mismatch condition. This is due to the precision with which a specific matching condition can be repeated if the tuner has calibrated position indicators. The models described here feature a guaranteed minimum matching range of 6:1 (equivalent VSWR). For higher matching ranges, please see our wide matching range units. These units are provided with micrometer driven probes and, except as noted, vernier readout of carriage position (the 3.5mm tuner has a micrometer driven carriage).

Position locks are provided on both the probe micrometers and the carriage mechanism. Units with sexed connectors have a female connector on one end and a male on the other.

Frequency
Range (GHz)
Matching Range1
Connector - Model
Body Length
Type N2
7mm3
3.5mm4
0.9 - 12.4
6:1 (minimum)
1643C
2640C
8045C
10.5 in (26.7cm)
1.8 - 18.0
6:1 (minimum)
1643D
2640D
8045D
7.5 in (19.1cm)
12.0 - 26.5
6:1 (minimum)
---
---
8041B
2.9 in (7.4cm)
     
Power Handling5
CW
50 watts
25 watts
Peak
0.5 kW
0.25 kW
1 Equivalent VSWR.
2 Precision stainless steel type N per Maury data sheet 5E-049.
3 Precision 7mm (APC7) per Maury data sheet 5E-060.
4 Precision 3.5mm per Maury data sheet 5E-062.
5 Within rated matching range.

Slide Screw Tuners - Wide Matching Range


Description

The tuners in this series are similar to those with Standard Matching Range; however, the mechanical characteristics are optimized for increased matching ranges. These tuners also utilize the slab-line transmission structure for broad frequency range. The probes are designed to be very close to one-quarter wavelength in the linear dimension at the mid-band of each range. Since each tuner has two probes, this results in improved matching characteristics for each unit. An additional feature of this series of tuners is the use of a LCD position readout of the carriage position on those units operating below 18 GHz. Higher frequency tuners utilize a micrometer carriage drive. These are noted in the model chart below.

The positional repeatability and high matching range of these tuners are ideally suited to applications like device characterization. Such measurements depend upon the ability of the tuner to establish impedances out near the edge of the Smith chart and to reproduce the electrical characteristics as a function of mechanical position. Slide screw tuners are also easy to use due to the almost independent electrical results of the mechanical motions. The depth of penetration of the probe into the transmission line determines the magnitude of the reflection, while the position of the probe along the line determines the phase. While there is some interaction, the effects are almost independent of each other.



Available Models

MODEL
 FREQUENCY
RANGE (GHz)		 CONNECTOR
TYPE		 VSWR
MATCHING
RANGE		 MAXIMUM LOSS
WITH PROBES
RETRACTED		 PROBE
CROSSOVER
FREQUENCY		 POWER HANDLING WITHIN 
RATED MATCHING RANGE
(AVE/PK WATTS)		 CARRIAGE TRAVEL
(MAXIMUM)
INCHES (CM)		 OVERALL LENGTH
(CONNECTOR - CONNECTOR)
INCHES (CM)
7941A
 12.0 - 50.0 2.4mm1 10:1 1.0 dB 21.5 GHz 15/150 0.417 (1.059) 4.62 (11.735)
8041C
 12.0 - 34.0 3.5mm2 10:1 0.7 dB 16.0 GHz 15/150 0.417 (1.059) 4.95 (12.573)
1643L
 0.6 - 6.0 Type N2 10:1 0.5 dB 1.9 GHz 50/500 13.3 (33.8) 17.0 (43.2)
8045D1
2640D1
1643D1
 1.8 - 18.0 3.5mm2
7mm3
Type N4		 12:1 0.4 dB 5.5 GHz 25/500
50/500
50/500		 3.400 (8.636)
3.400 (8.636)
3.400 (8.636)		 8.94 (22.708)
8.88 (22.555)
8.92 (22.657)
8045P
2640P
1643P
 0.8 - 18.0 3.5mm2
7mm3
Type N4		 10:1 0.6 dB 4.6 GHz 25/500
50/500
50/500		 7.800 (19.812)
7.800 (19.812)
7.800 (19.812)		 13.32 (33.833)
13.32 (33.833)
13.32 (33.833)
1643N
 0.8 - 2.5
2.5 - 8.0		 Type N4 25:1
18:1		 0.5 dB 2.8 GHz 50/500 7.800 (19.812) 13.32 (33.833)
2640 N
 0.8 - 2.5
2.5 - 8.0		 7mm3 25:1
18:1		 0.5 dB 2.8 GHz 50/500 7.800 (19.812) 13.28 (33.731)
8045N
 0.8 - 2.5
2.5 - 8.0		 3.5mm2 25:1
18:1		 0.5 dB 2.8 GHz 25/500 7.800 (19.812) 13.34 (33.884)
2740B
2440B
 0.8 - 8.0 7-165
14mm6		 35:1 0.1 dB 2.8 GHz 250/2500 7.880 (20.015)
7.880 (20.015)		 14.48 (36.779)
13.07 (33.198)
2740C
2440C
 0.4 - 4.0 7-165
14mm6		 25:1 0.1 dB 1.4 GHz 250/2500 14.95 (37.973)
14.95 (37.973)		 22.76 (57.810)
21.35 (54.229)
1 Precision 2.4mm per Maury data sheet 5E-064.
2 Precision 3.5mm per Maury data sheet 5E-062.
3 Precision 7mm (APC7) per Maury data sheet 5E-060.
4 Precision stainless steel type N per Maury data sheet 5E-049.
5 Precision 7-16 per Maury data sheet 5E-066.
6 Precision 14mm (GR900 equiv.) per Maury data sheet 5E-068.

Application Notes and Data Sheets

• 2G-035 Wideband Manual Tuners

• Maury Application Notes Library Maury Software and System Application Notes.

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