Home Products Waveguides Twists & Taper Transitions

Twists & Taper Transitions

We have a range of waveguide components include Precision Twists and Taper transitions. Customised products made to individual customer requirements are available on request. Twists Precision Twists The precision twists... Read full description

SKU: Twists/tapers

Categories: Waveguides

Description Specifications Reviews Enquire

Description

We have a range of waveguide components include Precision Twists and Taper transitions. Customised products made to individual customer requirements are available on request.

Twists

Precision Twists

The precision twists have been designed and precisely assembled to offer the optimum performance based on an average length and twist angle. They are available in clockwise and anticlockwise orientations.

Precision Twist diagram

Standard Rectangular

Specification:
V.S.W.R: Values for through flanges and up to 90 degree twists
Power: Values at F = 1.5 Fc for 90 degree twists
Material: Aluminium, Copper
Finish: Blue Paint, Iridited aluminium flanges

Operating Frequency Band (GHz)	Waveguide Designation			Max V.S.W.R.	Max Power K Watts	Length "A" (mm)
Operating Frequency Band (GHz)	UK WG	IEC R	E.I.A. WR	Max V.S.W.R.	Max Power K Watts	Length "A" (mm)
2.60 - 3.95	10	32	284	1.05	2230	458
3.30 - 4.90	11A	40	229	1.05	1500	356
3.95 - 5.85	12	48	187	1.05	990	305
4.90 - 7.05	13	58	159	1.05	775	248
5.85 - 8.20	14	70	137	1.05	520	217
7.05 - 10.0	15	84	112	1.05	345	179
8.20 - 12.40	16	100	90	1.05	225	140
10.0 - 15.0	17	120	75	1.07	175	115
12.4 - 18.0	18	140	62	1.07	120	100
15.0 - 22.0	19	180	51	1.11	80	51
18.0 - 26.5	20	220	42	1.11	46	71
22.0 - 33.0	21	260	34	1.11	46	71
26.5 - 40.0	22	320	28	1.11	24	39

* S = clockwise, A = anticlockwise (as viewed through the waveguide).
** Twist in degrees. Standard Twist 30, 45 and 90 degrees.
*** For 3 Digit Rectangular Flange part number, refer to the Flange Catalogue, or consult our sales team.

Alternative lengths or alternative angles of twist (anti-clockwise) available on request.

Double Ridge

Specification:
V.S.W.R: Values for through flanges and up to 90 degree twists
Power: Values at F = 1.5 Fc for 90 degree twists
Material: Aluminium
Finish: Blue Paint, iridited aluminium flanges

Operating Frequency Band (GHz)	Waveguide Designation	Max V.S.W.R.	Max Power K Watts	Length "A" (mm)
4.75 - 11.0	WRD475 D24	1.10	80	229
5.8 - 16.0	WRD580 D28	1.12	30	114
6.5 - 18.0	WRD650 D28	1.12	20	114
7.5 - 18.0	WRD750 D24	1.12	30	114
18.0 - 40.0	WRD180 C24	1.15	5	51

Ordering information

Example: PT 16 S Q Z 402 402 B 90

PT
- Product code:
  PT = Precision Twist
16
- Waveguide size:
  British WG size for rectangular waveguide or MIL spec. WRD size for double ridge waveguide
  e.g. 16 = WG16; 750 = WRD750
S
- Type:
  S = clockwise
  A = anticlockwise
Q
- Paint:
  Q = TWS blue (preferred)
  B = black
  G = grey
Z
- Finish:
  Z = unplated (preferred for brass / copper)
  M = passivate (option for brass)
  F = Iridite (preferred for aluminium)
  H = chromate
  A = tin
  B = silver
402
- Flange type (end1):
  Last 3 digits from the flange part no.
  e.g. 402 = UBR flange
402
- Flange type (end2):
  Last 3 digits from the flange part no.
  e.g. 402 = UBR flange
B
- Material:
  A = aluminium
  B = brass (rectangular wg only)
  C = copper (rectangular wg only)
90
- Angle:
  30 = 30 deg (standard)
  45 = 45 deg (standard)
  60 = 60 deg (standard)
  90 = 90 deg (standard)

Notes
1) Bend angles between 0 and 180 deg available on request.
2) Flange and tube materials should match.

Micro-Twists

Micro-twist

A range of micro twists are ideal for applications where space is at a premium.

The machined micro twist is ideal for applications needing a 90 degree twist in polarisation in a small space. It is particularly useful at lower frequencies where the saving in weight and space can be significant. The machined twist typically covers half a waveguide band. Please contact our sales team for ordering information.

Taper transistions

Standard Rectangular to Rectangular

Taper transition diagram

Specification:
VSWR: Please refer to table
Material: Copper electroform or machined aluminium / brass fabrication
Finish: Blue paint, unplated (preferred for brass/ copper) / silver / iridite (preferred for aluminium) flanges

lapping Frequency Band (GHz)	Waveguide Designation						TWS PART NUMBER	Max V.S.W.R.	Material	Overall Length “A” (mm)
	UK WG		IEC R		E.I.A. WR
	From	To	From	To	From	To
2.60 – 3.30	9A	10	26	32	340	284	TT 9A –SQB-(*-*)-B-10	1.05	Brass	261
2.60 – 3.95	10F	10	F32	32	-	284	TT 10F –SQB-(*-*)-B-10	1.05	Brass	153
2.60 – 3.95	10M	10	M32	32	-	284	TT 10M–SQB-(*-*)-B-10	1.05	Brass	203
3.30 – 3.95	10	11A	32	40	284	159	TT 10–SQB-(*-*)-B-11A	1.05	Brass	102
3.95 – 4.90	11A	12	40	48	229	187	TT 11A –SQB-(*-*)-C-12	1.05	Copper	222
3.95 – 4.90	11A	12	40	48	229	187	TT 11A–SQB-(*-*)-B-12	1.05	Brass	102
4.90 – 5.85	12	13	48	58	187	159	TT 12–SQB-(*-*)-C-13	1.05	Copper	191
4.90 – 5.85	12	13	48	58	187	159	TT 12 –SQB-(*-*)-B-13	1.05	Brass	102
5.85 – 7.05	13	14	58	70	159	137	TT 13 –SQB-(*-*)-C-14	1.05	Copper	168
5.85 – 7.05	13	14	58	70	159	137	TT 13 –SQB-(*-*)-B-14	1.05	Brass	102
7.05 – 8.20	14	15	70	84	137	112	TT 14 –SQB-(*-*)-C-15	1.05	Copper	140
7.05 – 8.20	14	15	70	84	137	112	TT 14 –SQB-(*-*)-B-15	1.05	Brass	102
8.20 – 10.00	15	16	84	100	112	90	TT 15 –SQB-(*-*)-C-16	1.05	Copper	121
8.20 – 10.00	15	16	84	100	112	90	TT 15 –SQB-(*-*)-B-16	1.05	Brass	101
8.20 – 12.40	16M	16	M100	100	-	90	TT 16M –SQB-(*-*)-B-16	1.05	Brass	153
10.00 -12.40	16	17	100	120	90	75	TT 16–SQB-(*-*)-C-17	1.05	Copper	61
10.00 -12.40	16	17	100	120	90	75	TT 16 –SQB-(*-*)-B-17	1.05	Brass	38
12.40 -15.00	17	18	120	140	75	62	TT 17 –SQB-(*-*)-C-18	1.05	Copper	61
12.40 -15.00	17	18	120	140	75	62	TT 17 –SQB-(*-*)-B-18	1.05	Brass	38
15.00 -18.00	18	19	140	180	62	51	TT 18 –SQB-(*-*)-B-19	1.075	Brass	38
18.00 -22.00	19	20	180	220	51	42	TT 19 –SQB-(*-*)-B-20	1.10	Brass	38
22.0 - 26.50	20	21	220	280	42	34	TT 20 –SQB-(*-*)-B-21	1.10	Brass	38
26.5 -33.00	21	22	280	320	34	28	TT 21 –SQB-(*-*)-B-22	1.10	Brass	38
33.0 - 40.00	22	23	320	400	28	22	TT 22 –SQB-(*-*)-C-23	1.10	Copper	38
Standard Rectangular to Rectangular WR102
7.05 –10.00	15	99	84	-	112	102	TT 15 –SQB-(*-*)-B-99	1.05	Brass	102
8.20 – 11.00	16	99	100	-	90	102	TT 16 –SQB-(*-*)-B-99	1.05	Brass	102

*** For 3 Digit Rectangular Flange part number, refer to the Flange Catalogue, or consult our sales team.
***** For 5-digit non-standard part numbers speak to our sales team.
H = Half Height Waveguide
F = Quarter Height Waveguide
99 = Non Standard Waveguide Size

Standard Rectangular to Double Ridge

Specification:
VSWR: Please refer to table
Material: machined aluminium or brass fabrication
Finish: Blue paint, silver or chromated / iridited flanges

y Band (GHz)	Waveguide Designation						TWS PART NUMBER	Max V.S.W.R.	Material	Overall Length “A” (mm)
	From	To	From	To	From	To
	UK WG	WRD	IEC R	WRD	EIA WR	WRD
4.75 – 5.85	12	475	48	475	187	475	TT 12 – SQB-(*-*)-B-475	1.05	Brass	140
5.85 – 8.20	14	350	70	350	137	350	TT 14 – SQH-(*-*)-A-350	1.05	Aluminium	89
5.85 – 8.20	14	475	70	475	137	475	TT 14 – SQB-(*-*)-B-475	1.05	Brass	89
5.85 – 8.20	14	580	70	580	137	580	TT 14 – SQH-(*-*)-A-580	1.05	Aluminium	116
6.50 – 8.20	14	650	70	650	137	650	TT 14 – SQB-(*-*)-B-650	1.05	Brass	89
7.05 – 10.00	15	650	84	650	112	650	TT 15 – SQB-(*-*)-B-650	1.05	Brass	89
7.5 – 10.00	15	750	84	750	112	750	TT 15 – SQB-(*-*)-B-750	1.05	Brass	89
8.20 – 11.00	16	475	100	475	90	475	TT 16 – SQB-(*-*)-B-475	1.05	Brass	89
8.20 – 12.40	16	650	100	650	90	650	TT 16 – SQH-(*-*)-A-650	1.05	Aluminium	89
8.20 – 12.40	16	750	100	750	90	750	TT 16 – SQH-(*-*)-A-750	1.05	Aluminium	89
10.00 -15.00	17	580	120	580	75	580	TT 17 – SQH-(*-*)-A-580	1.05	Aluminium	103
12.40 -18.00	18	750	140	750	62	750	TT 18 – SQH-(*-*)-A-750	1.075	Aluminium	51
15.00 -22.00	19	180	180	180	51	180	TT 19 – SQB-(*-*)-B-180	1.10	Brass	51
17.7 - 26.50	20	180	220	180	42	180	TT 20 – SQH-(*-*)-A-180	1.10	Aluminium	51
22.33 - 40.0	21	180	320	180	28	180	TT 21 – SQB-(*-*)-B-180	1.10	Brass	51
26.5 - 40.00	22	180	260	180	34	180	TT 22 – SQH-(*-*)-A-180	1.10	Aluminium	51

*** For 3 Digit Rectangular Flange part number, refer to the Flange Catalogue, or consult our sales team.

Standard Double Ridge to Double Ridge

Specification:
VSWR: Please refer to table
Material: machined aluminium
Finish: Blue paint, chromated / iridited flanges

Overlapping Frequency Band (GHz)	Waveguide Designation		TWS PART NUMBER	Max V.S.W.R.	Material	Overall Length “A” (mm)
Overlapping Frequency Band (GHz)	From	To	TWS PART NUMBER	Max V.S.W.R.	Material	Overall Length “A” (mm)
6.50 – 11.00	WRD 475 D24	WRD 650 D28	TT 475 –SQG-(*-*)-A-650	1.05	Aluminium	76
7.50 – 11.00	WRD 475 D24	WRD 750 D24	TT 475 –SQG-(*-*)-A-750	1.05	Aluminium	76
6.50 – 16.00	WRD 580 D28	WRD 650 D28	TT 580 –SQG-(*-*)-A-650	1.05	Aluminium	76
7.50 – 16.00	WRD 580 D28	WRD 750 D24	TT 580 –SQG-(*-*)-A-750	1.05	Aluminium	76
7.50 – 18.00	WRD 650 D28	WRD 750 D24	TT 650 –SQG-(*-*)-A-750	1.05	Aluminium	76

*** For 3 Digit Rectangular Flange part number, refer to the Flange Catalogue, or consult our sales team.

Ordering information

Example: TT 16 A Q Z 402 402 402 402 B 40

TT
- Product code:
  TT = taper transition
16
- Waveguide size:
  British WG size for rectangular waveguide or MIL spec. WRD size for double ridge waveguide
  e.g. 16 = WG16; 750 = WRD750
S
- Type:
  S = Standard
Q
- Paint:
  Q = TWS blue (preferred)
  B = black
  G = grey
Z
- Finish:
  Z = unplated (preferred for brass / copper)
  M = passivate (option for brass)
  F = Iridite (preferred for aluminium)
  H = chromate
  A = tin
  B = silver
402
- Flange type (end1):
  Last 3 digits from the TWS flange part no.
  e.g. 402 = UBR flange
402
- Flange type (end2):
  Last 3 digits from the TWS flange part no.
  e.g. 402 = UBR flange
B
- Material:
  A = aluminium
  B = brass (rectangular wg only)
  C = copper (rectangular wg only)
17
- Secondary waveguide size
  “British WG size for rectangular waveguide or MIL spec. WRD size for double ridge waveguide
  e.g. 17 = WG17; 750 = WRD750