Features

• • Models 90 GHz to 500 GHz
  • Thru-Reflect-Line (TRL) Calibration

• 3⁄4 λg or 5/4 λg lines
• 3 Grades
  • Bronze Grade (Series 704)
  • Sliver Grade (Series 721)
  • Gold Grade (Series 741)
• National Physical Laboratory Technology Applied

At millimeter wave frequencies the quarter wavelength lines required to carry out a TRL calibration become so thin as to become fragile and prone to damage and distortion.

By using multiple 1⁄4 λg lines the need to use very thin, fragile sections is negated, ensuring a more reliable and repeatable calibration.

Flann millimeter wave calibration kits have been designed in close co-operation with NPL and incorporate 3⁄4 λg or 5⁄4 λg sections. Flann has been awarded a licence by NPL to manufacture devices using this technology.

Further information on this calibration technique can be found from:

21st International Symposium on Space Terahertz Technology, Oxford, 23-25 March 2010.

 

Ordering
Please specify the following:

 

 

 

 

 

Standard Kit Contents

2 x Fixed Terminations
2 x Flush Shorts
2 x Waveguide Sections
2 x 3/
4λg or 3 x 5/
4λg Lines
Set of flange bolts
Precision flange dowels
Torque driver
USB data stick
Hardwood case
Handbook

 

Microwave Specifications

Waveguide Designation				Frequency (GHz)	Termination VSWR (max)
WM	WG	R	WR
2032	28	1200	8	90- 140	1.04
1651	29	1400	6	110 - 170	1.05
1295	30	1800	5	140 - 220	1.06
1092	31	2200	4	170 - 260	1.08
864	32	2600	3	220 - 330	1.1
710	-	-	2.8*	260 - 400	1.12
570	-	-	2.2*	330 - 500	1.15

* Designation not formally standardised

 

Dimensional Specifications

WG	WM*	Waveguide Dimensions (microns)	Dimensional Tolerances from Nominal (microns)									Flush Short Flatness better than (microns)
			Waveguide Aperture			Line Length			Waveguide Section Overall Length
			Bronze	Silver	Gold	Bronze	Silver	Gold	Bronze	Silver	Gold	Bronze	Silver	Gold
28	2032	2032 x 1016	12	8	4	18	9	4.5
29	1651	1651 x 826	10	6	3	15	7.5	4
30	1295	1295 x 648	8	5	2.5	12	6	3
31	1092	1092 x 546	6.5	4.5	2.5	9.5	5	2.5	20	10	5	12	6	3
32	864	864 x 432	5	3.5	2 .0	7	3.5	2
-	710	710 x 355	4	3	1.5	6.5	3	1.5
-	570	570 x 285	3.5	2.5	1.2	5	2.5	1.5

WM* – IEEE 1785.1:2012 Standard for Rectangular Metallic Waveguides and Their Interfaces for Frequencies of 110 GHz and Above.

 

WG	WM*	Line	Nominal Length (mm ± 0.01)	Line Changeover Frequency (GHz)	Measured Length (Microns ±)
28	2032	1	3.39	108
		2	2.31
29	1651	1	2.81	131
		2	1.91
30	1295	1	2.22	168
		2	1.47
31	1092	1	1.74	203
		2	1.24
32	864	1	1.29	260
		2	1.00
-	710	1	2.10	291
		2	1.61	334
		3	1.26
-	570	1	1.74	362
		2	1.33	416
		3	1.02