Rigid Waveguide straights, twists and Bends

Precision Straights

A range of standard length waveguide straights in a variety of materials. The high performance is based on the use of selected, sized, tube, careful assembly and selective tuning where necessary.

Precision Bends

The precision bends have been designed to offer the optimum performance based on an average length and bend radius. All bends are precisely assembled to ensure the highest performance.

Compact Bends

A set of specifications has been provided to offer the minimum radius bend available for both "E" and “H” plane bends in the respective frequency range.

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 Straight

Standard Rectangular
Specification:
V.S.W.R	Values for through flanges only
Power	Values at F = 1.5 Fc
Material:	Brass, Aluminium or Copper
Finish:	Blue Paint, Chromated / iridited / unplated flanges

Operating Frequency Band (GHz)	Waveguide Designation			TWS PART NUMBER	Max V.S.W.R.	Insertion Loss dB’s per metre	Max Power K Watts
Operating Frequency Band (GHz)	UK WG	IEC R	E.I.A. WR	TWS PART NUMBER	Max V.S.W.R.	Insertion Loss dB’s per metre	Max Power K Watts
1.70 – 2.60.	8	22	430	PS 08 –SQZ- (*-)-B-M(*)	1.03	0.010	5900
2.20– 3.30	9A	26	340	PS 9A –SQZ- (*-)-B-M(*)	1.03	0.015	3800
2.60 – 3.95	10	32	284	PS 10 –SQZ- (*-)-B-M(*)	1.03	0.019	2430
3.30 – 4.90	11A	40	229	PS 11A –SQZ- (*-)-B-M(*)	1.03	0.025	1600
3.95 – 5.85	12	48	187	PS 12 –SQZ- (*-)-B-M(*)	1.03	0.036	1040
4.90 - 7.05	13	58	159	PS 13 –SQZ- (*-)-B-M(*)	1.03	0.043	806
5.85 – 8.20	14	70	137	PS 14 –SQZ- (*-)-B-M(*)	1.03	0.058	544
7.05 – 10.0	15	84	112	PS 15 –SQZ- (*-)-B-M(*)	1.03	0.079	355
8.20 – 12.40	16	100	90	PS 16 –SQZ- (*-)-B-M(*)	1.03	0.11	229
10.0 – 15.0	17	120	75	PS 17 –SQZ- (*-)-B-M(*)	1.05	0.13	178
12.4 – 18.0	18	140	62	PS 18 –SQZ- (*-)-C-M(*)	1.05	0.18	123
15.0 – 22.0	19	180	51	PS 19 –SQZ- (*-)-C-M(*)	1.08	0.24	83
18.0 – 26.5	20	220	42	PS 20 –SQZ- (*-)-C-M(*)	1.08	0.37	48
22.0 – 33.0	21	260	34	PS 21 –SQZ- (*-)-C-M(*)	1.08	0.37	48
26.5 – 40.0	22	320	28	PS 22 –SQZ- (*-)-C-M(*)	1.08	0.58	25
Length in millimetres. Lengths up to 3 metres available as standard. * For 3 Digit Rectangular Flange part number, refer to the TWS Flange Catalogue, or consult the factory.

Double Ridge
Specification:
V.S.W.R	Values for through flanges only
Power	Values at F = 1.5 Fc
Material:	Aluminium
Finish:	Blue Paint, Chromated / iridited aluminium flanges

Operating Frequency Band (GHz)	Waveguide Designation	TWS PART NUMBER	Max V.S.W.R.	Insertion Loss dB’s per metre	Max Power K Watts
4.75 – 11.0	WRD475 D24	PS 475 - SQH- (*-)-A –M(*)	1.06	0.161	83
5.8 – 16.0	WRD580 D28	PS 580 - SQH- (*-)-A –M(*)	1.08	0.305	32
6.5 – 18.0	WRD650 D28	PS 650 - SQH- (*-)-A –M(*)	1.08	0.348	23
7.5 – 18.0	WRD 750 D24	PS 750 - SQH- (*-)-A –M(*)	1.08	0.315	33
18.0 – 40.0	WRD180 C24	PS 180- SQH- (*-)-A –M(*)	1.11	1.18	5.3
Length in millimetres. Lengths up to 3 metres available as standard. * For 3 Digit Rectangular Flange part number, refer to the TWS Flange Catalogue, or consult the factory.

Precision Twists

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
Finish:	Blue Paint, Chromated / iridited / aluminium flanges

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

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, Chromated / iridited / aluminium flanges

Operating Frequency Band (GHz)	Waveguide Designation	TWS PART NUMBER	Max V.S.W.R.	Max Power Watts C.W.	Length “A” (mm)
4.75 – 11.0	WRD475 D24	PT 475 –()QH-(-)-A-(*)	1.10	80	229
5.8 – 16.0	WRD580 D28	PT 580 –()QH-(-)-A-(*)	1.12	30	114
6.5 – 18.0	WRD650 D28	PT 650 –()QH-(-)-A-(*)	1.12	20	114
7.5 – 18.0	WRD750 D24	PT 750 –()QH-(-)-A-(*)	1.12	30	114
18.0 – 40.0	WRD180 C24	PT 180 –()QH-(-)-A-(*)	1.15	5	51
* 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 TWS Flange Catalogue, or consult the factory.


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

Micro Twists


	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.

Precision Bends

Standard Rectangular
Specification:
V.S.W.R	Values for through flanges and up to 90 degree bends
Power	Values at F = 1.5 Fc for 90 degree bends
Material:	Aluminium, Brass or Copper
Finish:	Blue Paint,

Operating Frequency Band (GHz)	Waveguide Designation			TWS PART NUMBER	V.S.W.R. Max	Max Power K Watts	Dim A (mm)	Bend Radius (mm) approx
Operating Frequency Band (GHz)	UK WG	IEC R	E.I.A. WR	TWS PART NUMBER	V.S.W.R. Max	Max Power K Watts	Dim A (mm)	Bend Radius (mm) approx
2.60 – 3.95	10	32	284	PB 10 –SQZ- (*-)-B-()-()	1.05	2230	153	90
3.30 – 4.90	11A	40	229	PB 11A –SQZ- (*-)-B-()-()	1.05	1500	153	85
3.95 – 5.85	12	48	187	PB 12–SQZ- (*-)-B-()-()	1.05	1005	150	75
4.90 – 7.05	13	58	159	PB 13 –SQZ- (*-)-B-()-()	1.05	775	140	80
5.85 – 8.20	14	70	137	PB 14 –SQZ- (*-)-B-()-()	1.05	520	125	60
7.05 – 10.0	15	84	112	PB 15 –SQZ- (*-)-B-()-()	1.05	345	100	45
8.20 – 12.40	16	100	90	PB 16 –SQZ- (*-)-B-()-()	1.05	225	75	40
10.0 – 15.0	17	120	75	PB 17–SQZ- (*-)-B-()-()	1.07	175	65	22
12.40 – 18.0	18	140	62	PB 18 –SQZ- (*-)-C-()-()	1.07	120	50	22
15.0 – 22.0	19	180	51	PB 19 –SQZ- (*-)-C-()-()	1.11	80	50	20
18.0 – 26.5	20	220	42	PB 20 –SQZ- (*-)-C-()-()	1.11	46	50	20
22.0 – 33.0	21	260	34	PB 21 –SQZ- (*-)-C-()-()	1.11	46	50	20
26.5 – 40.0	22	320	28	PB 22 –SQZ- (*-)-C-()-()	1.11	24	40	15
* E or H Plane bend (add “E” or “H”), when included in the above table, the dimensions refer specifically to either E or H Plane bends. Angle of bend in degrees. Standard Bends 30, 45, 60 and 90 degrees, alternative angles available on request. * For 3 Digit Rectangular Flange part number, refer to the TWS Flange Catalogue, or consult the factory. Cast Bends may be offered as an alternative.

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, Chromated / iridited / aluminium flanges

Operating Frequency Band (GHz)	Waveguide Designation	TWS PART NUMBER	Max V.S.W.R.	Max Power Watts C.W.	Dim A (mm)	Bend Radius (mm) approx
4.75 – 11.0	WRD475 D24	PB 475 –SQH- (*-)-A-()-()	1.10	80	110	50
5.8 – 16.0	WRD580 D28	PB 580 –SQH- (*-)-A-()-()	1.12	30	110	35
6.5 – 18.0	WRD650 D28	PB 650 –SQH- (*-)-A-()-()	1.12	20	70	28
7.5 – 18.0	WRD750 D24	PB 750 –SQH- (*-)-A-()-()	1.12	30	70	28
18.0 – 40.0	WRD180 C24	PB 180 –SQH- (*-)-A-()-()	1.15	5	60	20
* E or H Plane bend (add “E” or “H”), when included in the above table, the dimensions refer specifically to either E or H Plane bends. Angle of bend in degrees. Standard Bends 30, 45, 60 and 90 degrees, alternative angles available on request. * For 3 Digit Rectangular Flange part number, refer to the TWS Flange Catalogue, or consult the factory.

Compact Bends

Standard Rectangular
Specification:
V.S.W.R	Values for through flanges and up to 90 degree bends
Power	Values at F = 1.5 Fc for 90 degree bends
Material:	Aluminium, Brass or Copper
Finish:	Blue Paint,

Operating Frequency Band (GHz)	Waveguide Designation			TWS PART NUMBER	V.S.W.R. Max	Max Power K Watts	Dim A (mm)	Bend Radius (mm) approx
Operating Frequency Band (GHz)	UK WG	IEC R	E.I.A. WR	TWS PART NUMBER	V.S.W.R. Max	Max Power K Watts	Dim A (mm)	Bend Radius (mm) approx
2.60 – 3.95	10	32	284	PB 10 –CQZ- (*-)-B-(*)-E	1.15	2200	74	45
2.60 – 3.95	10	32	284	PB 10 –CQZ- (*-)-B-(*)-H	1.15	2200	93	45
3.30 – 4.90	11A	40	229	PB 11A –CQZ- (*-)-B-(*)-E	1.15	1490	84	58
3.30 – 4.90	11A	40	229	PB 11A –CQZ- (*-)-B-(*)-H	1.15	1490	91	50
3.95 – 5.85	12	48	187	PB 12 –CQZ- (*-)-B-(*)-E	1.15	995	81	58
3.95 – 5.85	12	48	187	PB 12 –CQZ- (*-)-B-(*)-H	1.15	995	90	55
4.90 – 7.05	13	58	159	PB 13 –CQZ- (*-)-B-(*)-E	1.15	770	72	50
4.90 – 7.05	13	58	159	PB 13 –CQZ- (*-)-B-(*)-H	1.15	770	77	45
5.85 – 8.20	14	70	137	PB 14 –CQZ- (*-)-B-(*)-E	1.15	518	69	40
5.85 – 8.20	14	70	137	PB 14 –CQZ- (*-)-B-(*)-H	1.15	518	73	34
7.05 – 10.00	15	84	112	PB 15 –CQZ- (*-)-B-(*)-E	1.15	343	50	22
7.05 – 10.00	15	84	112	PB 15 –CQZ- (*-)-B-(*)-H	1.15	343	61	25
8.20 – 12.40	16	100	90	PB 16 –CQZ- (*-)-B-(*)-E	1.15	222	42	16
8.20 – 12.40	16	100	90	PB 16 –CQZ- (*-)-B-(*)-H	1.15	222	55	22
10.0 – 15.00	17	120	75	PB 17 –CQZ- (*-)-B-(*)-E	1.18	172	39	13
10.0 – 15.00	17	120	75	PB 17 –CQZ- (*-)-B-(*)-H	1.18	172	47	16
12.40 –18.00	18	140	62	PB 18 –CQZ- (*-)-C-(*)-E	1.18	119	37	13
12.40 –18.00	18	140	62	PB 18 –CQZ- (*-)-C-(*)-H	1.18	119	44	15
15.0 –22.00	19	180	51	PB 19 –CQZ- (*-)-C-(*)-E	1.20	77	26	12
15.0 –22.00	19	180	51	PB 19 –CQZ- (*-)-C-(*)-H	1.20	77	29	12
18.0 – 26.50	20	220	42	PB 20 –CQZ- (*-)-C-(*)-E	1.25	44	25	12
18.0 – 26.50	20	220	42	PB 20 –CQZ- (*-)-C-(*)-H	1.25	44	28	12
22.0 – 33.00	21	260	34	PB 21 –CQZ- (*-)-C-(*)-E	1.25	44	25	12
22.0 – 33.00	21	260	34	PB 21 –CQZ- (*-)-C-(*)-H	1.25	44	28	12
26.5 – 40.00	22	320	28	PB 22 –CQZ- (*-)-C-(*)-E	1.25	22	25	12
26.5 – 40.00	22	320	28	PB 22 –CQZ- (*-)-C-(*)-H	1.25	22	27	12
Angle of bend in degrees. Standard Bends 30, 45, 60 and 90 degrees, alternative angles available on request. * For 3 Digit Rectangular Flange part number, refer to the TWS Flange Catalogue, or consult the factory. Cast Bends may be offered as an alternative option.

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

Operating Frequency Band (GHz)	Waveguide Designation	TWS PART NUMBER	Max V.S.W.R.	Max Power Watts C.W.	Dim A (mm)	*Bend Radius (mm) approx
4.75 – 11.0	WRD475 D24	PB 475 –CQH- (*-)-A-(*)-E	1.15	78	48	30
4.75 – 11.0	WRD475 D24	PB 475 –CQH- (*-)-A-(*)-H	1.15	78	55	30
5.80 – 16.0	WRD580 D28	PB 580 –CQH- (*-)-A-(*)-E	1.15	28	41	25
5.80 – 16.0	WRD580 D28	PB 580 –CQH- (*-)-A-(*)-H	1.15	28	46	25
6.5 – 18.0	WRD650 D28	PB 650 –CQH- (*-)-A-(*)-E	1.20	18	35	20
6.5 – 18.0	WRD650 D28	PB 650 –CQH- (*-)-A-(*)-H	1.20	18	40	20
7.5 – 18.0	WRD750 D24	PB 750 –CQH- (*-)-A-(*)-E	1.20	28	35	20
7.5 – 18.0	WRD750 D24	PB 750 –CQH- (*-)-A-(*)-H	1.20	28	40	20
18.0 – 40.0	WRD180 C24	PB 180 –CQH- (*-)-A-(*)-E	1.25	4.5	25	12
18.0 – 40.0	WRD180 C24	PB 180 –CQH- (*-)-A-(*)-H	1.25	4.5	27	12
* The bend radius indicated are approximate please consult the factory for actual values for your application. Angle of bend in degrees. Standard Bends 30, 45, 60 and 90 degrees, alternative angles available on request. * For 3 Digit Rectangular Flange part number, refer to the TWS Flange Catalogue, or consult the factory.

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