CP0805A0881CWTR

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RF Directional couplers are widely used in radio communication applications like radio transmission, radio reception, wireless data transmission, wireless network communication, frequency spectrum monitoring, etc. In this category, CP0805A0881CWTR is a bidirectional transformer directional coupler with an operating frequency of 800 MHz to 960 MHz and coupling of 8 dB ± 0.5 dB. This coupler has an excellent return loss of 20 dB or greater and directivity of 18 dB min. It also comes with a temperature stability of 0.6 dB.

The heart of a directional coupler is the passive component network which provides the coupling between ports. This network usually consists of a transformer. The CP0805A0881CWTR transformer directional coupler employs an air-core transformer to achieve 8 dB of coupling at 800-960MHz operating frequency. This type of directional coupler features a 50 ohm nominal impedance, excellent rejection performance with very low insertion loss and symmetrical response resulting in superior balance and temperature stability.

The transformer directional coupler must be connected carefully to the 50 ohm impedance network as it has high frequency response and depending on the application, it may need to be used together with other frequency-selective components. The transformer typically consists of two inductors and two capacitors in series to match the input and output impedances, thus providing a low-loss and broadband connection.

This type of coupler is mainly used to couple forward and reverse signals. The RF signals are coupled into an RF port which then passes through the transformer to the output port. The reverse flow is also coupled, but in the opposite direction, from the RF port to the output port. The relationship between the forward and reverse signals is defined by the directivity of the coupler. The coupler’s directivity is usually determined by its ratio of forward to reverse coupling.

The CP0805A0881CWTR transformer directional coupler provides excellent results in applications where high performance is required. It is suitable for radio control systems, cellular networks, and other communication systems where signal-to-noise characteristics are important. This coupler also allows the user to measure the signal power levels and monitor the environmental noise levels. Additionally, it is a simple, low cost, and robust component which can be used in many applications.

In summary, the CP0805A0881CWTR is a bidirectional transformer directional coupler with an operating frequency of 800 MHz to 960 MHz and a coupling of 8 dB± 0.5 dB. It has a temperature stability of 0.6 dB and return loss of 20dB or greater. The transformer directional coupler is mainly used to couple forward and reverse signals and provides excellent results in critical applications like radio control systems, cellular networks, and other communication systems where signal-to-noise characteristics are of paramount importance.

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