DDC545 Dual Directional Coupler -45dB

From: $260.00

NIST Calibration Certificate

Temporarily unavailable

SKU: DDC-545 Category:


The DDC545 dual directional coupler was designed for the DPM6000 Power Meter. It measures forward and reflected power of a device in a 50 ohm environment.DDC545

The RF INPUT port connects to the HF signal source such as a transmitter. This source is normally the transmitter and or linear HF amplifier. The RF OUTPUT connects to a 50 ohm load.  This load can be a transmission line, antenna, or a dummy load. When the load completely absorbs the energy from the signal source, little if any power is reflected, thus, the signal output from the REFL port is very low. The signal out of the FWD port indicates the amount of power (– 45 dB) going to the load. See the application note for the DPM1A power meter for additional information.


Max input power:

5,000 Watt PEP crest factor 4:1

3,000 Watt CW

Insertion loss:

Negligible (< .1 dB)

Bandwidth REFLECTED:

200 kHz-54 MHz

Bandwidth FWD:

200 kHz-54 MHz


1.1:1 or better

Return Loss:

> -25dB


FWD and REFLECTED port -45dB +/- 1db


>30dB typically

Connectors RF IN/OUT





Weight: .35lbs Dimensions: 4 × 3.4 × 1.5 in


The DDC545 dual directional coupler was designed for the DPM6000 Power meter. It measures forward and reflected power of a device in a 50 ohm environment.



There are no reviews yet.

Be the first to review “DDC545 Dual Directional Coupler -45dB”

Your email address will not be published.

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Product Enquiry