Waveguide Probe Coupler
A Waveguide Probe Coupler is a precision device used to couple a small amount of electromagnetic energy from a waveguide for measurement or monitoring purposes. It features high directivity and minimal insertion loss, making it essential for accurately sampling signals within microwave systems across various applications, including telecommunications, radar, and testing equipment.
Waveguide Probe Coupler for Precision Signal Sampling
Dolph Microwave waveguide probe couplers are built for controlled RF sampling in monitoring, test and calibration setups. The standard model table below covers 0.96–40 GHz with 20% operating bandwidth, 1.1:1 VSWR and 30–60 dB coupling, while the product range supports waveguide sizes from WR2300 to WR10 with N, TNC, 7-16, SMA, 2.92 mm, 2.4 mm and 3.5 mm connector options. Select cover, grooved or choke flanges, aluminum or copper construction, or request a custom configuration to match your waveguide interface and coupling requirement.
Specify the coupler around your waveguide interface
Core specification options
The probe coupler extracts a small portion of electromagnetic energy from the waveguide for signal monitoring and measurement while keeping the main signal path substantially undisturbed.
Waveguide Probe Coupler models
Compare the frequency range, waveguide size, VSWR, coupling, output connector, flange, material and finish for each listed model. On smaller screens, swipe horizontally to view every column.
| MODEL | FREQ. RANGE (GHz) | OPERATING BW | WG SIZE | VSWR | COUPLING (dB) | COUPLING OUTPUT | FLANGES TYPE | MATERIAL | FINISH | DATASHEET | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| COVER | GROOVED | STEP | ||||||||||
| DH-12WPC… | 0.96-1.46 | 20% | WR770 | 1.1:1 | 30-60 | N-K | UDR12 | PDR12 | Al | Chromate/Painted | STEP | |
| DH-14WPC… | 1.13-1.73 | 20% | WR650 | 1.1:1 | 30-60 | N-K | UDR14 | PDR14 | Al | Chromate/Painted | STEP | |
| DH-18WPC… | 1.45-2.2 | 20% | WR510 | 1.1:1 | 30-60 | N-K | UDR18 | PDR18 | Al | Chromate/Painted | STEP | |
| DH-22WPC… | 1.72-2.61 | 20% | WR430 | 1.1:1 | 30-60 | N-K | UDR22 | PDR22 | Al | Chromate/Painted | STEP | |
| DH-26WPC… | 2.17-3.3 | 20% | WR340 | 1.1:1 | 30-60 | N-K | UDR26 | PDR26 | Al | Chromate/Painted | STEP | |
| DH-32WPC… | 2.6-3.95 | 20% | WR284 | 1.1:1 | 30-60 | N-K | UDR32 | PDR32 | Al | Chromate/Painted | STEP | |
| DH-40WPC… | 3.22-4.9 | 20% | WR229 | 1.1:1 | 30-60 | N-K | UDR40 | PDR40 | Al | Chromate/Painted | STEP | |
| DH-48WPC… | 3.94-5.99 | 20% | WR187 | 1.1:1 | 30-60 | N-K | UDR48 | PDR48 | Al | Chromate/Painted | STEP | |
| DH-58WPC… | 4.64-7.05 | 20% | WR159 | 1.1:1 | 30-60 | N-K | UDR58 | PDR58 | Al | Chromate/Painted | STEP | |
| DH-70WPC… | 5.38-8.17 | 20% | WR137 | 1.1:1 | 30-60 | N-K | UDR70 | PDR70 | Al | Chromate/Painted | STEP | |
| DH-84WPC… | 6.57-9.99 | 20% | WR112 | 1.1:1 | 30-60 | N-K | UDR84/UBR84 | PDR84/PBR84 | Cu | Chromate/Painted | STEP | |
| DH-100WPC… | 8.2-12.5 | 20% | WR90 | 1.1:1 | 30-60 | N-K | UDR100/UBR100 | PDR100/PBR100 | Cu | Chromate/Painted | STEP | |
| DH-120WPC… | 9.84-15 | 20% | WR75 | 1.1:1 | 30-60 | N-K | UBR120 | PBR120 | Cu | Chromate/Painted | STEP | |
| DH-140WPC… | 11.9-18 | 20% | WR62 | 1.1:1 | 30-60 | SMA-K | UBR140 | PBR140 | Cu | Chromate/Painted | STEP | |
| DH-180WPC… | 14.5-22 | 20% | WR51 | 1.1:1 | 30-60 | SMA-K | UBR180 | PBR180 | Cu | Chromate/Painted | STEP | |
| DH-220WPC… | 17.6-26.7 | 20% | WR42 | 1.1:1 | 30-60 | 2.92-K | UBR220 | PBR220 | Cu | Chromate/Painted | STEP | |
| DH-260WPC… | 21.7-33 | 20% | WR34 | 1.1:1 | 30-60 | 2.92-K | UBR260 | PBR260 | Cu | Chromate/Painted | STEP | |
| DH-320WPC… | 26.3-40 | 20% | WR28 | 1.1:1 | 30-60 | 2.92-K | UBR320 | PBR320 | Cu | Chromate/Painted | STEP | |
DH-100WPC30NKPMA
Use the ordering code to define waveguide size, coupling level, coupling connector, interface, flange combination and material.
Where the coupler is used
Choose the model and coupling configuration according to the waveguide band, required sample level and connection to your monitoring or test equipment.
Send the interface details before ordering
Dolph Microwave offers product selection, custom design and technical support for non-standard requirements. Provide your waveguide size or frequency range, target coupling value, coupling connector, flange type, material and finish requirement so the coupler can be matched to the intended system configuration.
Documents used for interface confirmation
The linked flange reference states that Dolph Microwave manufactures and supplies flanges made to current IEC and EIA standards. Use the product datasheet and flange designation guide when confirming the selected configuration.
Datasheet Reference — additional technical values and ordering information
The product datasheet lists additional values for coupling range, accuracy, pressure, coupling interface, finish and ordering information.
| Model | WR Type | Frequency (Ghz) | VSWR Max. | Coupling (dB) | Accuracy (dB) | Pressure (Mpa) | Coupling Interface |
|---|---|---|---|---|---|---|---|
| DH-14WPC… | WR650 | 1.13-1.73 | 1.1 | 20-60 | ±1 | 0.3 | N/SMA/TNC |
| DH-18WPC… | WR510 | 1.45-2.20 | 1.1 | 20-60 | ±1 | 0.3 | N/SMA/TNC |
| DH-22WPC… | WR430 | 1.72-2.61 | 1.1 | 20-60 | ±1 | 0.3 | N/SMA/TNC |
| DH-26WPC… | WR340 | 2.17-3.30 | 1.1 | 20-60 | ±1 | 0.3 | N/SMA |
| DH-32WPC… | WR284 | 2.60-3.95 | 1.1 | 20-60 | ±1 | 0.3 | N/SMA |
| DH-40WPC… | WR229 | 3.22-4.90 | 1.1 | 20-60 | ±1 | 0.3 | N/SMA |
| DH-48WPC… | WR187 | 3.94-5.99 | 1.1 | 20-60 | ±1 | 0.3 | N/SMA |
| DH-58WPC… | WR159 | 4.64-7.05 | 1.1 | 20-60 | ±1 | 0.3 | N/SMA |
| DH-70WPC… | WR137 | 5.38-8.17 | 1.1 | 20-60 | ±1 | 0.3 | N/SMA |
| DH-84WPC… | WR112 | 6.57-9.99 | 1.1 | 20-60 | ±1 | 0.3 | N/SMA |
| DH-100WPC… | WR90 | 8.20-12.40 | 1.1 | 20-60 | ±1 | 0.3 | N/SMA |
| DH-120WPC… | WR75 | 9.84-15.0 | 1.1 | 20-60 | ±1 | 0.3 | SMA/2.92 |
| DH-140WPC… | WR62 | 11.9-18.0 | 1.1 | 20-60 | ±1 | 0.3 | SMA/2.92 |
| DH-180WPC… | WR51 | 14.5-22.0 | 1.1 | 20-60 | ±1 | 0.3 | SMA/2.92 |
| DH-220WPC… | WR42 | 17.6-26.7 | 1.1 | 20-60 | ±1 | 0.3 | SMA/2.92 |
| DH-260WPC… | WR34 | 21.7-33.0 | 1.1 | 20-60 | ±1 | 0.3 | SMA/2.92 |
| DH-320WPC… | WR28 | 26.3-40.0 | 1.1 | 20-60 | ±1 | 0.3 | SMA/2.92 |
| Flange Type | Inside Finish | Body Finish | Material |
|---|---|---|---|
| Cover/Grooved | Iridite per MIL-C-5541 | Anticorrosion Black Painted | Al/Brass |
| Cover/Grooved | Iridite per MIL-C-5541 | Anticorrosion Black Painted | Al/Brass |
| Cover/Grooved | Iridite per MIL-C-5541 | Anticorrosion Black Painted | Al/Brass |
| Cover/Grooved | Iridite per MIL-C-5541 | Anticorrosion Black Painted | Al/Brass |
