CHF190104CBF101L

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CHF190104CBF101L is a product of the RF Misc ICs and Modules category. It is a miniature 4-way low loss hybrid power divider designed for use from 30MHz to 1000MHz. It is especially useful in splitting signals in L-band for applications such as GPS, cellular, and satellite applications within wireless communications. It is also useful in antenna diversity applications to maximize signal receiving capability. This product is well suited for many applications due to its extremely low insertion loss, and excellent port-to-port isolation.

The CHF190104CBF101L operates from a 5V supply with a typical insertion loss of less than 0.75dB with a power handling capability of 5W. It has an H-plane beamwidth of 90°, which allows for proper signal distribution. The 4-way hybrid power divider is designed for operation in 50 ohm systems and yields excellent amplitude balance and phase balance of 90° ± 5° within its frequency range.

The CHF190104CBF101L can be used for distributed antenna system design to split signals and feed multiple antennas. It has a high output isolation of 40dB, making it suitable for use in multiple user communication systems such as cellular base stations, repeaters, and wireless communication systems. The output isolation and amplitude balance also enable the device to be used in antenna diversity arrays. It can be used to feed a single antenna and reduce signal fading, or to combine multiple signals from multiple antennas.

The specific working principle of the CHF190104CBF101L is based on low-loss power combining. The device consists of four Wilkinson power combiners arranged in an H-plane pattern. Each combiner is composed of two directional couplers and two equal length transmission lines. The power dividers work by splitting the input signal two ways, each with equal amplitude. The two output signals are recombined at the third coupler by adding the two signals together in phase. The recombined signal is then sent to the fourth coupler, which is essentially the opposite of the second coupler, where the power is split into two equal parts, each containing both the original frequencies and the sum frequency.

Within the CHF190104CBF101L, the four ports are connected to cavities that are tuned to achieve the desired isolation between ports. The isolation between the two elements is achieved by the use of acoustic damping materials in the cavities, and the design of the four cavities is optimized to achieve the highest performance over its operating frequency range. The performance results in low insertion loss, isolation, and amplitude balance.

The CHF190104CBF101L is suitable for a wide range of applications due to its excellent performance and its ability to combine and divide power signals effectively in a small package. Its low insertion loss and low-distortion enable it to be used in communications systems with high power levels. It can be used in applications that require signal splitting and combining, as well as antenna diversity systems. Additionally, due to its small size, it is also suitable for use in compact designs such as distributed antenna systems.

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