EHF-FD1736

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RF directional couplers are an important part of the design of many types of communication systems, serving as a way to measure, monitor, and manipulate signals during transmission. The EHF-FD1736 is a type of RF directional coupler specifically designed to operate in higher frequency bands. Its application field and working principle are described in this article.

The operating frequency range of the EHF-FD1736 is between 17 to 36 GHz and is designed to be used in dense frequency bands. It is a passive device and is primarily used to measure reflected signal levels, transmit power, or receive signal levels of a transmission line. In addition to measuring signal levels, the EHF-FD1736 is designed to be a stable and low-loss device that minimizes signal degradation. This ensures reliable signal measurements in dense frequency bands.

The EHF-FD1736 uses an asymmetric, open design. The design includes two main components: a high-impedance input port and a low-impedance output port. The input port connects to the transmission line while the output port is connected to a measuring device. The asymmetric design increases the device’s impedance mismatch tolerance, which helps avoid frequency-dependent errors caused by mismatched impedances. The open design also reduces noise and improves isolation.

The design of the EHF-FD1736 allows it to be used for many purposes. It is commonly used in military communication systems, satellite systems, and commercial systems to measure transmitted power levels, detecting and isolating transmitters, and monitoring changes in transmission line characteristics. It can also be used to determine the return loss of a transmission line or for security systems.

The basic working principle of the EHF-FD1736 is based on impedance matching. A signal is fed to the input port which is then matched with the internal load impedance. This matched signal is then divided, with a portion being passed to the output port and the remainder being reflected back to the input port. By monitoring the signals at the input and output ports, the reflected signal power being sent back to the transmission line can be measured.

The combination of high frequency coverage, low insertion loss, and wide operating impedance range makes the EHF-FD1736 an ideal choice for many applications. Its open design and wide frequency coverage allow the device to be used for various purposes, ranging from measuring power levels to detecting transmitters. Its low insertion loss ensures reliable measurements, even in very dense frequency bands.

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