Multichannel RF Apparatus High Frequency Channel Combining
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Solution Overview
Problem
Current radio frequency systems face challenges in simplification and reduction of components due to the limited intermediate frequency bandwidth, which restricts the combination of radio frequency channels and increases the number of expensive ADCs and DACs required.
Innovation Solution
A multichannel radio frequency apparatus and method that up-converts baseband signals into high frequency bands above 30 GHz, allowing for the combination of multiple channels into ultra-wideband signals, which are then down-converted back to radio frequency, reducing the need for multiple ADCs and DACs and overcoming bandwidth limitations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If intermediate frequency combination technology is used to reduce the quantity of ADCs, then the number of ADCs is reduced, but the intermediate frequency bandwidth is limited which restricts the number of channels that can be combined
Solution Approach 1:
The patent changes the frequency parameter from intermediate frequency to high frequency band (above 30 GHz) to overcome the bandwidth limitation. By operating at high frequency, the system can combine a larger number of channels without being constrained by the limited intermediate frequency bandwidth, thus resolving the contradiction between reducing ADC quantity and maintaining bandwidth capability.
Solution Approach 2:
The patent transitions from the intermediate frequency domain to the high frequency domain, effectively moving to another frequency dimension. This dimensional change enables the system to handle more channels simultaneously while using fewer ADCs, as the high frequency band provides sufficient bandwidth to accommodate multiple channels that would otherwise require separate ADCs at intermediate frequency.
2Adaptability or versatility
If more channels are combined using intermediate frequency technology, then the number of channels is increased, but the quantity of ADCs and DACs increases due to bandwidth constraints
Solution Approach 1:
By changing the operating frequency parameter to high frequency band (above 30 GHz), the system can accommodate more channels without proportionally increasing the number of ADCs and DACs. The high frequency band provides sufficient bandwidth to combine multiple channels, allowing the system to increase channel capacity while maintaining a reduced number of expensive converter components.
3Device complexity
If traditional radio frequency system architecture is used, then the system is simple, but the cost increases due to the large quantity of expensive ADCs and DACs required
Solution Approach 1:
The patent merges multiple channels into a single high frequency band signal, combining the functions that would traditionally require separate ADCs and DACs. By consolidating multiple channel processing into one high frequency signal path, the system reduces the total number of expensive converter components while maintaining the ability to handle multiple channels simultaneously.
Data Source
AI summary
A multichannel radio frequency apparatus and method are disclosed. The apparatus includes a digital baseband unit and at least one transmission subsystem, and the subsystem includes: digital up converters, configured to up-convert baseband signals generated; a digital combiner, configured to up-convert M channels of digital radio frequency signals into a high frequency band whose frequency is greater than or equal to 30 GHz, to obtain M channels of high frequency digital signals, and combine the M channels of high frequency digital signals into a channel of ultra-wideband high frequency digital signal; a DAC, configured to convert the ultra-wideband high frequency digital signal into an ultra-wideband high frequency analog signal; an analog splitter, configured to split the ultra-wideband high frequency analog signal into M channels of high frequency analog signals; and radio frequency transmitting circuits, configured to transmit the analog radio frequency signals by using radio frequency antennas.