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Couplers (Broadwall, Sidewall, Crossguide & Loop)

We offer a range of directional broad wall, side wall and cross guide couplers in 3 and 4 port configurations. All couplers have been designed to offer low VSWR, flat... Read full description

SKU: couplers

Categories: Waveguides

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Description

We offer a range of directional broad wall, side wall and cross guide couplers in 3 and 4 port configurations. All couplers have been designed to offer low VSWR, flat response and high directivity over the entire designated waveguide band. Improvements in directivity and coupling value tolerances can be made for specified narrow band applications. The CC and DC series of couplers are manufactured with the full range of international flange styles as shown in our Flange Catalogue with alternative plating and paint finishes on request.

Cross Guide Couplers (3 Port)

Standard Rectangular

Specification:
Standard Coupling Values: 20dB, 30dB, 40dB
Nominal accuracy: ±.1dB, ±.1.5dB, ±.1.5dB
V.S.W.R.: 1.32max, 1.22max, 1.06max
Directivity: 20dB typical
Material: Brass
Finish: Blue Paint
3 port couplers have an internal load to give the best directivity performance.

Operating Frequency Band (GHz)	Waveguide Designation			Dimension (mm)
Operating Frequency Band (GHz)	UK WG	IEC R	E.I.A. WR	A	B	C	D
2.60 – 3.95	10	32	284	334	204	36	229
3.30 – 4.90	11A	40	229	288	153	31	212
3.95 – 5.85	12	48	187	248	153	24	172
5.85 – 8.20	14	70	137	192	102	17	141
7.05 – 10.0	15	84	112	167	102	14	116
8.20 – 12.40	16	100	90	141	76	12	103
10.0 – 15.0	17	120	75	121	76	11	82
12.4 – 18.0	18	140	62	111	76	9	73
18.0 – 26.5	20	220	42	81	57	5	54
26.5 – 40.0	22	320	28	79	51	5	54

Available in 20, 30, and 40 dB Coupling only.
For other Coupling values contact our sale team.
Please state the frequency bandwidth you require when ordering.

Cross Guide Couplers (4 Port)

Standard Rectangular

Specification:
Standard Coupling Values: 20dB, 30dB, 40dB
Nominal accuracy: ±.1dB, ±.1.5dB, ±.1.5dB
V.S.W.R.: 1.29max, 1.17max, 1.06max
Directivity: 20dB typical
Material: Brass
Finish: Blue Paint
The installed directivity of 4 port couplers depends on the match seen at the opposite arm.

Operating Frequency Band (GHz)	Waveguide Designation			Dimension (mm)
Operating Frequency Band (GHz)	UK WG	IEC R	E.I.A. WR	A	B	C
2.60 – 3.95	10	32	284	204	204	36
3.30 – 4.90	11A	40	229	153	153	31
3.95 – 5.85	12	48	187	153	153	24
5.85 – 8.20	14	70	137	102	102	17
7.05 – 10.0	15	84	112	102	102	14
8.20 – 12.40	16	100	90	76	76	12
10.0 – 15.0	17	120	75	76	76	11
12.4 – 18.0	18	140	62	76	76	9
18.0 – 26.5	20	220	42	57	57	5
26.5 – 40.0	22	320	28	51	51	5

Available in 20,30, and 40 dB Coupling only.
For other Coupling values contact our sales team.
Please state the frequency bandwidth you require when ordering.

Ordering information

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

FA
- Product code:
  CC = cross guide coupler
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:
  A = standard 3 port
  B = standard 4 port
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 (through arm - input arm):
  Last 3 digits from the TWS flange part no.
  e.g. 402 = UBR flange
402
- Flange type (through arm - output):
  Last 3 digits from the TWS flange part no.
  e.g. 402 = UBR flange
402
- Flange type (coupled arm):
  Last 3 digits from the TWS flange part no.
  e.g. 402 = UBR flange
402
- Flange type (reverse coupled) - 4 port coupler only):
  Last 3 digits from the TWS flange part no.
  e.g. 402 = UBR flange
B
- Material:
  A = aluminium
  B = brass
40
- Coupling Value
  20 = 20dB
  30 = 30dB
  40 = 40dB

Directional Couplers (3 Port) broadwall

Standard Rectangular

Specification:
Standard Coupling Values: 10dB, 20dB, 30dB, 40dB
Nominal accuracy: ±.1.5dB, ± 1.5dB, ±.2dB, ± 2dB, WG20 -WG22 ±.2dB
Return loss secondary arm: 27dB min
Flatness: ±.1dB
Directivity
WG 10 - 18 : 35dBmin over 75% bandwidth
WG 20 - 22 : 30dBmin over 50% bandwidth
full band spec. : see table
Material: Brass
Finish: Blue Paint

Operating Frequency Band (GHz)	Waveguide Designation			Directivity Minimum (dB) (2)	Return Loss (Primary) (dB)	Dimension (mm)
Operating Frequency Band (GHz)	UK WG	IEC R	E.I.A. WR	Directivity Minimum (dB) (2)	Return Loss (Primary) (dB)	A	B	C
2.60 – 3.95	10	32	284	25	32	826	77	171
3.30 – 4.90	11A	40	229	25	32	718	57	181
3.95 – 5.85	12	48	187	25	32	635	51	153
4.90 – 7.05	13	58	159	25	32	546	32	133
5.85 – 8.20	14	70	137	25	32	554	43	127
7.05 – 10.0	15	84	112	25	32	395	28	77
8.20 – 12.40	16	100	90	25	32	287	33	67
10.0 – 15.0	17	120	75	25	32	289	22	69
12.4 – 18.0	18	140	62	25	32	249	19	60
18.0 – 26.5	20	220	42	15	32	158	19	38
26.5 – 40.0	22	320	28	15	32	162	19	35

Available in 10, 20, 30 and 40 dB Coupling values.
Narrow band designs for 3, 6, 10 and 12 dB are available, however other electrical and mechanical parameters may change.
Please contact our sales team for further details.
Please state the frequency bandwidth you require when ordering.

Directional Couplers (4 Port) broadwall

Standard Rectangular

Directivity
WG 10 - 18 : 35dBmin over 75% bandwidth
WG 20 - 22 : 30dBmin over 50% bandwidth
Full band specifications: see table

Material: Brass
Finish: Blue Paint

Please note that this style of broadwall coupler is unsuitable for reflectometer applications as the directivities are dependant on the match seen on the opposite arms.

Operating Frequency Band (GHz)	Waveguide Designation			Directivity Minimum (dB)	Return Loss (Primary) (dB)	Dimension (mm)
Operating Frequency Band (GHz)	UK WG	IEC R	E.I.A. WR	Directivity Minimum (dB)	Return Loss (Primary) (dB)	A	B	C
2.60 – 3.95	10	32	284	25	32	718	77	171
3.30 – 4.90	11A	40	229	25	32	673	57	181
3.95 – 5.85	12	48	187	25	32	566	51	153
4.90 – 7.05	13	58	159	25	32	501	33	132
5.85 – 8.20	14	70	137	25	32	467	43	127
7.05 – 10.0	15	84	112	25	32	298	28	76
8.20 – 12.40	16	100	90	25	32	163	33	67
10.0 – 15.0	17	120	75	25	32	247	22	64
12.4 – 18.0	18	140	62	25	32	206	22	60
18.0 – 26.5	20	220	42	15	32	152	22	38
26.5 – 40.0	22	320	28	15	32	127	16	38

High Directivity Directional Couplers (3 Port) broadwall

Standard Rectangular High Directivity

Specification:
Mean Coupling: ±.0.5dB over the respective bandwidth for all standard coupling values
Coupling sensitivity: ±.0.75dB about the mean coupling value over the specified frequency band
Return loss: secondary arm 27dB min
Material: Brass
Finish: Blue Paint, Silver plated flanges

Operating Frequency Band (GHz)	Waveguide Designation			Directivity Minimum (dB)	Return Loss (Primary) (dB)	Dimension (mm)
Operating Frequency Band (GHz)	UK WG	IEC R	E.I.A. WR	Directivity Minimum (dB)	Return Loss (Primary) (dB)	A	B	C
2.60 – 3.95	10	32	284	40	34	1753	76	173
3.30 – 4.90	11A	40	229	40	34	1613	57	181
3.95 – 5.85	12	48	187	40	36	1194	51	139
5.85 – 8.20	14	70	137	40	40	1035	44	127
7.05 – 10.0	15	84	112	40	33	737	28	76
8.20 – 12.40	16	100	90	40	34	609	33	67
10.0 – 15.0	17	120	75	40	35	584	22	63
12.4 – 18.0	18	140	62	38	35	533	19	60
18.0 – 26.5	20	220	42	35	30	432	19	38
26.5 – 40.0	22	320	28	35	30	292	19	38

* Mean Coupling value is defined as the average coupling value (in dB’s) across the specified frequency range.

High directivity designs shown are available in 10, 20, 30 and 40dB.
Please contact our sales team for further details.
Please state the frequency bandwidth you require when ordering.

Ordering information

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

FA
- Product code:
  DC = directional broadwall coupler
  SC = directional sidewall coupler
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:
  A = standard 3 port
  B = standard 4 port
  D = high directivity 3 port
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 (through arm - input arm):
  Last 3 digits from the TWS flange part no.
  e.g. 402 = UBR flange
402
- Flange type (through arm - output):
  Last 3 digits from the TWS flange part no.
  e.g. 402 = UBR flange
402
- Flange type (coupled arm):
  Last 3 digits from the TWS flange part no.
  e.g. 402 = UBR flange
402
- Flange type (reverse coupled) - 4 port coupler only):
  Last 3 digits from the TWS flange part no.
  e.g. 402 = UBR flange
B
- Material:
  A = aluminium
  B = brass
40
- Coupling Value
  20 = 20dB
  30 = 30dB
  40 = 40dB

Sidewall Couplers

A variety of sidewall couplers with different layouts are available depending on application. These can be designed to customer specifications / layouts. Please contact our sales team with the specification and frequency range required.

Sidewall coupler