HDH-06003GHD(40)

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RF Directional Coupler is an essential device in the modern radio frequency (RF) communication system. The Hanmi Far East high-dynamic-range model HDH-06003GHD (40) directional coupler can establish broadband and wide band-stop frequency characteristics. This type of device can be used for assessing power of the signals, monitoring signal on/off and isolating certain frequencies.

Overview

The HDH-06003GHD (40) directional coupler is designed for application in the link between the transmitter and the antenna. This device is based on a microstrip or stripline technology where two transmission lines that run internally from the input to the output lines connected to the output. It is capable of measuring the power level of the received signal and transmitting it to the antenna. The structure of this device can be divided into three parts, namely the input power tap, the output power tap and the phase shift tap.

Features

The HDH-06003GHD (40) directional coupler features 40 dB of power handling capacity, 50 Ohm impedance, 1dB compression point, maximum VSWR 3.2:1, minimum isolation more than 26 dB, and excellent linearity and frequency range. The input power tap is connected to the input port and its impedance is 50 Ohms. The power tap of the HDH-06003GHD (40) directional coupler enables it to cover frequency bands from 250 MHz to 1000 MHz with a minimum 3dB at that frequency. The maximum insertion loss of the HDH-06003GHD (40) directional coupler is lower than 0.3 dB at the specified mounting positions. It supports insertion loss of less than 1 dB at all frequency points.

Design and Working Principle

The HDH-06003GHD (40) directional coupler utilizes microstrip line technology in the design. It consists of six layers, two layers of ground plane, one layer of dielectric substrate, and three layers of microstrip lines. The microstrip lines are connected to the input and output ports and have two impedance qualities, a high and a low. The propogation of electromagnetic wave through the high impedance strip creates a signal voltage at the input port which is then amplified by the transistors. This amplified signal is then directed towards the output port. The low impedance strip suppresses the transmission of signals to the output while allowing signal transmission to the input.

Application Field

The HDH-06003GHD (40) directional coupler is mainly used in fixed communication systems such as radio, telephony and television systems. RF couplers with this type of configuration can be used in connection with any kind of radio antenna system, providing the port to connect the transmitter and the antenna. Additionally, this type of device can be used in aircraft communication systems, military communication systems, and remote control systems. It is also widely used in telecommunication networks, cellular networks, and wireless Internet-of-Things networks.

Conclusion

The HDH-06003GHD (40) directional coupler is essential device for establishing and maintaining wide and reliable radio communication systems and networks. It features wide band-stop frequencies, excellent linearity and frequency range, and high power handling capacity. With this device, users can enjoy a better communication experience. Furthermore, this device is suitable for applications in various fields such as remote control, aircraft communication, and telecommunication.

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