1A1305-3

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RF Directional Coupler is an essential component for both signal exchanging and signal signal sythesis. RF Directional Coupler can effectively control the power and impedance of the signals, and also provide a signal path for signal analysis. In order to provide superior performance and reliability, many manufacturers have developed a variety of models. One of the most reliable devices is the 1A1305-3. This article will discuss 1A1305-3\'s application field and working principle.

Application Field:
The 1A1305-3 is a high-performance RF Directional Coupler. It is widely used in mobile communication systems, aerospace, defense, microwave radio communication, radar, cable TV, radio systems, and many other applications. It offers superior performance in terms of frequency coverage, insertion loss, power handling, return loss, and shielding. It can also be used in antenna systems, power amplifiers, modulators, oscillators, and frequency synthesizers.

Working Principle:
The 1A1305-3 RF Directional Coupler utilizes a unique “feedforward” design to accurately measure signals in either direction. The device uses a directional coupler as the primary element. The directional coupler is composed of two transmission lines, a summing port and a difference port. The two lines are connected in an asymmetric, cross-coupled configuration, so that a single signal applied at the input will be divided and output at the summing port and the difference port. The summing port will output the total sum of the signal, while the difference port will output the difference between the two signals. This allows the device to measure signals in both directions. The device also incorporates a precision resistor and a low-noise amplifier to ensure that the signal is accurately measured. The device also includes an isolator to isolate the input signal and an adjustable impedance line to provide a match between the input and output ports.

The 1A1305-3 is highly versatile and reliable, making it a popular choice for a wide variety of applications. Its superior performance and durable construction make it a great choice for all sorts of signal measurement needs. Its ability to provide accurate measurements in both directions makes it an ideal choice for both signal exchange and signal signal synthesis.

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