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Bends (H & E plane)

The Rigid waveguide components include Precision Straight Waveguide, Precision and Compact Bends (E and H plane) and Precision Twists. Alternative designs for Twists, Bends and Straights to individual customer requirements... Read full description

SKU: Bends

Categories: Waveguides

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Description

Download the specifications for all our available bends or view the range below.

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.

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, aluminium - iridited, unplated flanges

Operating Frequency Band (GHz)	Waveguide Designation			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	Max V.S.W.R.	Insertion Loss dB's per metre	Max Power K Watts
1.70 - 2.60.	8	22	430	1.03	0.010	5900
2.20 - 3.30	9A	26	340	1.03	0.015	3800
2.60 - 3.95	10	32	284	1.03	0.019	2430
3.30 - 4.90	11A	40	229	1.03	0.025	1600
3.95 - 5.85	12	48	187	1.03	0.036	1040
4.90 - 7.05	13	58	159	1.03	0.043	806
5.85 - 8.20	14	70	137	1.03	0.058	544
7.05 - 10.0	15	84	112	1.03	0.079	355
8.20 - 12.40	16	100	90	1.03	0.11	229
10.0 - 15.0	17	120	75	1.05	0.13	178
12.4 - 18.0	18	140	62	1.05	0.18	123
15.0 - 22.0	19	180	51	1.08	0.24	83
18.0 - 26.5	20	220	42	1.08	0.37	48
22.0 - 33.0	21	260	34	1.08	0.37	48
26.5 - 40.0	22	320	28	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 Flange Catalogue, or consult our sales team.

Double Ridge

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

Operating Frequency Band (GHz)	Waveguide Designation	Max V.S.W.R.	Insertion Loss dB's per metre	Max Power K Watts
4.75 - 11.0	WRD475 D24	1.06	0.161	83
5.8 - 16.0	WRD580 D28	1.08	0.305	32
6.5 - 18.0	WRD650 D28	1.08	0.348	23
7.5 - 18.0	WRD 750 D24	1.08	0.315	33
18.0 - 40.0	WRD180 C24	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 Flange Catalogue, or consult our sales team.

Ordering information

Example: PS 16 S Q Z 402 402 B M500

PS
- Product code:
  PS = Precision Straight
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 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)
M500
- Length:
  "M" length in mm (preferred)
  "I" length in inches
  e.g. M500 = 500mm

Bends

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.

Precision Bend diagram

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			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	V.S.W.R. Max	Max Power K Watts	Dim A (mm)	Bend Radius (mm) approx
2.60 - 3.95	10	32	284	1.05	2230	153	90
3.30 - 4.90	11A	40	229	1.05	1500	153	85
3.95 - 5.85	12	48	187	1.05	1005	150	75
4.90 - 7.05	13	58	159	1.05	775	140	80
5.85 - 8.20	14	70	137	1.05	520	125	60
7.05 - 10.0	15	84	112	1.05	345	100	45
8.20 - 12.40	16	100	90	1.05	225	75	40
10.0 - 15.0	17	120	75	1.07	175	65	22
12.40 - 18.0	18	140	62	1.07	120	50	22
15.0 - 22.0	19	180	51	1.11	80	50	20
18.0 - 26.5	20	220	42	1.11	46	50	20
22.0 - 33.0	21	260	34	1.11	46	50	20
26.5 - 40.0	22	320	28	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 Flange Catalogue, or consult our sales team. Machined or 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, iridited aluminium flanges

Operating Frequency Band (GHz)	Waveguide Designation	Max V.S.W.R.	Max Power K Watts	Dim A (mm)	Bend Radius (mm) approx
4.75 - 11.0	WRD475 D24	1.10	80	110	50
5.8 - 16.0	WRD580 D28	1.12	30	110	35
6.5 - 18.0	WRD650 D28	1.12	20	70	28
7.5 - 18.0	WRD750 D24	1.12	30	70	28
18.0 - 40.0	WRD180 C24	1.15	5	60	20

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.

Compact bend diagram

Standard Rectangular

Operating Frequency Band (GHz)	Waveguide Designation			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	V.S.W.R. Max	Max Power K Watts	Dim A (mm)	Bend Radius (mm) approx
2.60 - 3.95	10	32	284	1.15	2200	74	45
2.60 - 3.95	10	32	284	1.15	2200	93	45
3.30 - 4.90	11A	40	229	1.15	1490	84	58
3.30 - 4.90	11A	40	229	1.15	1490	91	50
3.95 - 5.85	12	48	187	1.15	995	81	58
3.95 - 5.85	12	48	187	1.15	995	90	55
4.90 - 7.05	13	58	159	1.15	770	72	50
4.90 - 7.05	13	58	159	1.15	770	77	45
5.85 - 8.20	14	70	137	1.15	518	69	40
5.85 - 8.20	14	70	137	1.15	518	73	34
7.05 - 10.00	15	84	112	1.15	343	50	22
7.05 - 10.00	15	84	112	1.15	343	61	25
8.20 - 12.40	16	100	90	1.15	222	42	16
8.20 - 12.40	16	100	90	1.15	222	55	22
10.0 - 15.00	17	120	75	1.18	172	39	13
10.0 - 15.00	17	120	75	1.18	172	47	16
12.40 - 18.00	18	140	62	1.18	119	37	13
12.40 - 18.00	18	140	62	1.18	119	44	15
15.0 - 22.00	19	180	51	1.20	77	26	12
15.0 - 22.00	19	180	51	1.20	77	29	12
18.0 - 26.50	20	220	42	1.25	44	25	12
18.0 - 26.50	20	220	42	1.25	44	28	12
22.0 - 33.00	21	260	34	1.25	44	25	12
22.0 - 33.00	21	260	34	1.25	44	28	12
26.5 - 40.00	22	320	28	1.25	22	25	12
26.5 - 40.00	22	320	28	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 Flange Catalogue, or consult our sales team. Cast Bends may be offered as an alternative option.

Double Ridge

Double ridge compact bend diagram

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, iridited aluminium flanges

Ordering information

Example: PB 16 S Q Z 402 402 B 90 E

PB
- Product code:
  PB = Precision Bend
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:
  C= Compact
  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 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)
E
- Type:
  E = E plane
  H = H plane

Unflanged step bends Bends

This range was developed as a machined from solid replacement for cast bends - to avoid possible issues during brazing and with porosity

These step bends are machined from solid brass or aluminium.
They are available in 30, 45, and 90 degrees.

Ordering Information

Example: SB 16 90 E B

SB
- Product code:
  SB = Step Bend
16
- Waveguide size:
  British WG size for rectangular waveguide or MIL spec. WRD size for double ridge waveguide
  e.g. 16 = WG16; 750 = WRD750
90
- Angle:
  30 = 30 deg (standard)
  45 = 45 deg (standard)
  60 = 60 deg (standard)
  90 = 90 deg (standard)
E
- Type:
  E = E plane
  H = H plane
B
- Material:
  A = aluminium
  B = brass

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 Twists 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

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 waveguide

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.