Radio frequency receiver system for wideband signal processing
First Claim
1. A method comprising:
- providing a plurality of input terminals, each input terminal receiving RF signals within a first predetermined portion of a predetermined frequency range; and
providing a plurality of RF processing circuits connected to the plurality of input terminals, each RF processing circuit performing a predetermined processing function on a second predetermined portion of the predetermined frequency range,wherein each of the plurality of second predetermined portions of the predetermined frequency range comprise a first predetermined sub-set of frequencies that are the same as a second predetermined sub-set of frequencies within another one of the plurality of second predetermined frequency ranges,providing the plurality of RF processing circuits comprises providing a direct-conversion receiver as one of the plurality of RF processing circuits, the direct-conversion receiver operating with a local oscillator having a frequency approximately the same as the centre frequency of the second predetermined portion of the predetermined frequency range associated with the one of the plurality of RF processing circuits, andanother RF processing circuit of the plurality of RF processing circuits at least one of;
down-converts and up-converts the associated second predetermined portion of the predetermined frequency range to an intermediate frequency that lies within the second predetermined portion of the predetermined frequency range of the direct-conversion receiver; and
down-converts and up-converts a plurality of subsets of the associated second predetermined portion of the predetermined frequency range to a plurality of intermediate frequencies that lie within the second predetermined portion of the predetermined frequency range of the direct-conversion receiver.
1 Assignment
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Accused Products
Abstract
Wireless communication is ubiquitous today and deployments are growing rapidly leading to increased interference, increasing conflicts, etc. As a result monitoring the wireless environment is increasingly important for regulators, service providers, Government agencies, enterprises etc. Such monitoring should be flexible in terms of the networks being monitored within the wireless environment but should also provide real-time monitoring to detect unauthorized transmitters, provide dynamic network management, etc. Accordingly, based upon embodiments of the invention, a broadband, real-time signal analyzer (RTSA) circuit that allows for the deployment of RTSA devices in a distributed environment wherein determination of policy breaches, network performance, regulatory compliance, etc. are locally determined and exploited directly in network management or communicated to the central server and network administrators for subsequent action. Beneficially the RTSA exploits a broadband RF front end in conjunction with parallel direct down conversion and FFT techniques.
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Citations
11 Claims
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1. A method comprising:
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providing a plurality of input terminals, each input terminal receiving RF signals within a first predetermined portion of a predetermined frequency range; and providing a plurality of RF processing circuits connected to the plurality of input terminals, each RF processing circuit performing a predetermined processing function on a second predetermined portion of the predetermined frequency range, wherein each of the plurality of second predetermined portions of the predetermined frequency range comprise a first predetermined sub-set of frequencies that are the same as a second predetermined sub-set of frequencies within another one of the plurality of second predetermined frequency ranges, providing the plurality of RF processing circuits comprises providing a direct-conversion receiver as one of the plurality of RF processing circuits, the direct-conversion receiver operating with a local oscillator having a frequency approximately the same as the centre frequency of the second predetermined portion of the predetermined frequency range associated with the one of the plurality of RF processing circuits, and another RF processing circuit of the plurality of RF processing circuits at least one of; down-converts and up-converts the associated second predetermined portion of the predetermined frequency range to an intermediate frequency that lies within the second predetermined portion of the predetermined frequency range of the direct-conversion receiver; and down-converts and up-converts a plurality of subsets of the associated second predetermined portion of the predetermined frequency range to a plurality of intermediate frequencies that lie within the second predetermined portion of the predetermined frequency range of the direct-conversion receiver. - View Dependent Claims (2, 3)
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4. A device comprising:
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a plurality of input terminals, each input terminal receiving RF signals within a first predetermined portion of a predetermined frequency range; and a plurality of RF processing circuits connected to the plurality of input terminals, each RF processing circuit performing a predetermined processing function on a second predetermined portion of the predetermined frequency range, wherein each of the plurality of second predetermined portions of the predetermined frequency range comprise a first predetermined sub-set of frequencies that are the same as a second predetermined sub-set of frequencies within another one of the plurality of second predetermined frequency ranges, the plurality of RF processing circuits comprises providing a direct-conversion receiver as one of the plurality of RF processing circuits, the direct-conversion receiver operating with a local oscillator having a frequency approximately the same as the centre frequency of the second predetermined portion of the predetermined frequency range associated with the one of the plurality of RF processing circuits, and another RF processing circuit of the plurality of RF processing circuits at least one of; down-converts and up-converts the associated second predetermined portion of the predetermined frequency range to an intermediate frequency that lies within the second predetermined portion of the predetermined frequency range of the direct-conversion receiver; and down-converts and up-converts a plurality of subsets of the associated second predetermined portion of the predetermined frequency range to a plurality of intermediate frequencies that lie within the second predetermined portion of the predetermined frequency range of the direct-conversion receiver. - View Dependent Claims (5, 6)
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7. A device comprising:
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a plurality of input terminals, each input terminal receiving RF signals within a first predetermined portion of a predetermined frequency range; and a plurality of RF processing circuits connected to the plurality of input terminals, each RF processing circuit performing a predetermined processing function on a second predetermined portion of the predetermined frequency range, wherein each of the plurality of second predetermined portions of the predetermined frequency range comprise a first predetermined sub-set of frequencies that are the same as a second predetermined sub-set of frequencies within another one of the plurality of second predetermined frequency ranges, the plurality of RF processing circuits comprises providing a direct-conversion receiver as one of the plurality of RF processing circuits, the direct-conversion receiver operating with a local oscillator having a frequency approximately the same as the centre frequency of the second predetermined portion of the predetermined frequency range associated with the one of the plurality of RF processing circuits, and another RF processing circuit of the plurality of RF processing circuits at least one of down-converts and up-converts a predetermined portion of the associated second predetermined portion of the predetermined frequency range to within the second predetermined portion of the predetermined frequency range of the direct-conversion receiver. - View Dependent Claims (8, 9, 10, 11)
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Specification