Name: 915 & 2450 MHz Microwave Coupler
Brand: DOLPH MICROWAVE
Price: 1 USD

915 & 2450 MHz Microwave Coupler

Take a small sample of the power in your microwave line. Choose the coupling level, connector and waveguide size to suit your meter or monitoring system.

What to send for a quote

915 / 2450 MHzOperating frequencies

30-70 dBCoupling options

20-25 dBDirectivity

What do you need to measure?

Start with the signal you want to see at the measurement port. Then match the coupler to the power in the main line and the input limits of your instrument.

One measurement path or two?

Single and dual loop couplers are available. Tell us whether you need one sampled signal or a forward-and-reflected measurement arrangement. The port direction and labelling should be agreed for the selected unit.

Which coupling level fits your instrument?

The listed range is 30-70 dB. A higher coupling value sends a smaller sample to the measurement port. Include your detector or power-meter input range so the sample level can be checked.

Which connector is already in use?

The catalogue lists N, SMA and TNC options, depending on waveguide size. Include connector type and gender, not just a photograph of the outside of the unit.

Start with the operating limits

Specification	Details
Frequency Range	915 MHz and 2450 MHz
Handling Power	6 KW, 10 KW, up to 20 KW cw
Bandwidth	20%
Coupling Degree	30-70 dB
Directivity	20-25 dB
Structure	Compact

These are the published feature specifications. Check the detailed model data below for the configuration you need.

Measuring a mismatch and adjusting it are different jobs

A coupler gives you a sample for measurement. A tuner adjusts the load match. If you need both functions, check the measurement connection as well as the space needed to reach the tuner adjustments.

See the microwave tuners for load matching.

If reflected power also needs to be managed, compare the microwave isolator. For different waveguide sizes at the mating ends, review the waveguide transition options.

Check the fit before placing the order

Electrical ratings are not enough if the flanges, connectors or mounting points do not fit. A marked-up drawing is the clearest way to show the space you have.

Replacing a coupler

Send the old part number, a clear connector photo and the dimensions between mating flanges. A similar-looking housing does not establish the same coupling or interface.

Building a new line

Send the operating frequency, continuous power and measurement task. Add the available space and cable connection you plan to use.

Use the flange designation guide when naming the mating connection. Include a photo if the flange code is not known.

Agree on the build and the checks

Dolph’s manufacturing work includes CNC machining, turning, waveguide forming, brazing, plating and assembly. For a custom part, send the drawing requirements and the checks your team needs before ordering.

Microwave measurement equipment at Dolph Microwave.

If you need dimensional results, RF measurements or specific inspection records, list them with your enquiry. Confirm the scope with the selected configuration. See Dolph’s manufacturing capabilities.

Full model and construction details

Compare the frequency, waveguide, connection and material before choosing a model. Send the catalogue reference if an entry matches your requirement.

Waveguide and coupling models

Model	WR Type	Frequency (MHZ)	VSWR Max.	Coupling (dB)
DH-9WHC	WR975	915±50	1.1	30-70
DH-22WHC…	WR430	2450±50	1.1	30-70
DH-26WHC…	WR340	2450±50	1.1	30-70
DH-32WHC…	WR284	2450±50	1.1	30-70

Coupling performance and interfaces

Directivity (dB)	Accuracy (dB)	Freq. Sensitivity (dB)	Coupling Interface	Coupling Directional
20-25	±0.7	±1	N/SMA/TNC	Single/Dual
20-25	±0.7	±1	N/SMA/TNC	Single/Dual
20-25	±0.7	±1	N/SMA	Single/Dual
20-25	±0.7	±1	N/SMA	Single/Dual

Finish and material

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

Ordering information: DH – 26 WHC 50 N K P A

Code	Description
DH	Dolph Microwave
26	WR340
WHC	Single Loop Couplers
WDHC	Dual Loop Couplers
50	Coupling 50 dB
N	Connector Type
K	Female
P	Flange Cover
M	Flange Grooved
A	Material Al

Original product PDF Flange guide PDF

Questions before you order

Does 30-70 dB mean the coupling is adjustable?

It describes the published coupling range. It does not establish that every coupler can be adjusted through that range. State the coupling value you need and confirm the selected configuration.

Can I use any connector shown in the catalogue?

Connector choices vary by waveguide row. WR975 and WR430 list N/SMA/TNC; WR340 and WR284 list N/SMA. Check the required connector and gender with the model.

Will the connector fit my existing cable?

Send the cable connector designation and a photo. The mating connector, gender and access space all need to match.

What if I do not have a complete part number?

A photo, operating frequency, main-line power and basic interface dimensions are a useful starting point. Include the meter or detector details if you are replacing a measurement setup.

Other parts worth checking

These components serve different jobs in a microwave system. Compare their own specifications and interfaces before combining them.

Have a drawing or an existing part?

Send it with the details below. If some details are missing, tell us what you know and which points still need checking.

Frequency and continuous power
Required coupling and single/dual arrangement
Connector type, gender and instrument input range
Waveguide, flange and available length

Add the quantity, delivery destination and target date. Ask for the proposed configuration, drawing, price and lead time to be included in the quotation.

Email your requirements