HHM2220SA3 RF/IF and RFID

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A RF directional coupler is an electrical device used to measure the magnitude of the signal on a transmission line with minimal disruption to the transmission line. The HHM2220SA3 is an example of such a device which can be used in a variety of applications.

The HHM2220SA3 is a high performance RF directional coupler designed specifically for short coupling times. Its main application is in a short circuit test set-up, where it is used to measure the output of a short or open circuit. The HHM2220SA3 also has many other applications, such as measuring the output power of a transmitter, signal monitoring, EMC measurements, or as a component of a spectrum analyzer.

The HHM2220SA3 directional coupler operates on the principle of a six-port network, which divides the power of a signal into two equal parts, a forward and a return transmission. A small portion of the forward transmission is diverted to a test port, while the return transmission is absorbed in an adjustable resistor. By measuring the power at the test port, one can calculate the power in the forward transmission and consequently the total power in the transmission line.

The HHM2220SA3 directional coupler has a minimal impact on the performance of the transmission line, maintaining correct impedance conditions and no undesirable reflections. The bandwidth of the HHM2220SA3 directional coupler is from 0.1 to 3 GHz, with a maximum insertion loss of 0.1 dB. It also features exceptionally low without degradation of performance, with VSWR less than 1.25 at any frequency.

Available in a connectorized package with SMA connectors, the HHM2220SA3 directional coupler is optimized for a short-term coupling time, making it not only suitable for testing, but also measuring the continuous signal level in the transmission line. It has high accuracy and good repeatability and requires only a few seconds to activate and get a quality reading, making it one of the most preferred RF directional couplers in the market.

The HHM2220SA3 is a precise directional coupler designed to provide a reliable way to measure the power of an RF signal in a variety of applications. Its high accuracy and sensitivity make it an ideal choice for tests that require a fast response and accurate readings. The minimal disruption to the transmission line due to its low insertion loss and wide frequency range add to the advantages of this device.

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