Integrated multisystem access platform

Abstract

The invention discloses an integrated multisystem access platform which mainly comprises a frequency dividing and combining unit of the main body part, a full frequency combining unit realizing finalsignal integration and output, and a transmission unit acting between the frequency dividing and combining unit and the full frequency combining unit. The frequency dividing and combining unit mainlyperforms primary synthesis on the original input signal and realizes output of the primary synthesis signal. The full frequency combining unit mainly performs secondary synthesis on the primary synthesis signal and performs final output of the secondary synthesis signal. The transmission unit is mainly used between the frequency dividing and combining unit and the full frequency combining unit andinputs the primary synthesis signal to the full frequency combining unit. The integrated multisystem access platform is great in intermodulation performance, simple in structure, convenient to debug,stable in performance, low in loss, high in isolation and high in definition.

Description

Technical field: [0001] The invention relates to an integrated multi-system access platform. Background technique: [0002] At present, bridge cascading solutions are used for traditional multi-system access platforms, such as figure 2 In the scheme shown, according to the number of input ports, a certain number of bridges (5) are cascaded using coaxial cables (6), and coaxial loads (7) are required to connect the empty ports of the bridges (5) to In the end, all the signals are synthesized step by step through the bridge (5), and finally output. The traditional solution mainly brings the following disadvantages: 1. The indicators are unstable. Due to the large number of bridges used, each The bridge will have an impact on the overall indicators of the product, and the coaxial cable is used to connect the bridge to the bridge, which increases the probability of unstable product performance; 2. The noise is large, because the traditional scheme uses bridges for cascading , ...

AI Technical Summary

Problems solved by technology

[0002] At present, bridge cascading solutions are used for traditional multi-system access platforms, such as figure 2 In the scheme shown, according to the number of input ports, a certain number of bridges (5) are cascaded using coaxial cables (6), and coaxial loads (7) are required to connect the empty ports of the bridges (5) to In the end, all the signals are synthesized step by step through the bridge (5), and finally output. The traditional solution mainly brings the following disadvantages: 1. The indicators are unstable. Due to the large number of bridges used, each The bridge will have an impact on the overall indicators of the product, and the coaxial cable is used to connect the bridge to the bridge, which increases the probability of unstable product performance; 2. The noise is large, because the traditional scheme uses bridges for cascading , the bridge itself does not have any filtering function, so any signal can be input and output during signal processing, resulting in high noise in the entire system; 3. Signal interference is large, because the traditional solution uses bridges for cascading , the isolation strength of the bridge is relatively small, when signal processing is performed, especially when processing signals of the same frequency, signal disorder is very likely to occur, and clear output of the signal cannot be achieved; 4. The loss is large, and the traditional solution uses electric When the bridges are cascaded, the loss of a single bridge is already very large, and the overall loss of multiple cascaded bridges is even greater, resulting in a large overall insertion loss and large power loss of the multi-system combining platform, and the redundant ports require The coaxial load is used for termination, resulting in a large part of the signal power being absorbed by the coaxial load when the signal is synthesized at each stage, resulting in a huge loss. When using it, it is necessary to add a power amplifier at the output end to use it.

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