# US 10,313,164 B2 · Techniques for implementing a portable spectrum analyzer > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,313,164 B2 - Document ID: US10313164B2 - Status: Granted - Kind: B2 - Application number: 15/588,256 - Filed: 2017-05-05 - Published: 2018-03-29 - Granted: 2019-06-04 - Earliest claimed: 2016-09-27 - Assignees: BAE Systems Information and Electronic Systems Integration Inc. - Applicants: BAE SYSTEMS Information and Electronic Systems Integration Inc. - Inventors: Apurva N. Mody; Jack Chuang; Ronald Lawrence; Chad M. Spooner - Web page: https://patentgrep.com/patent/US10313164B2 ## CPC - H04L 27/0006: {Assessment of spectral gaps suitable for allocating digitally modulated signals, e.g. for carrier allocation in cognitive radio (for spectrum sharing between different networks H04W16/14)} - G01R 23/02: Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage - G01R 23/16: Spectrum analysis; Fourier analysis - G06F 3/0485: Scrolling or panning - G06F 3/1423: {controlling a plurality of local displays, e.g. CRT and flat panel display} - H04B 1/16: Circuits - H04B 1/3833: {Hand-held transceivers} - H04B 17/23: Indication means, e.g. displays, alarms, audible means - H04B 17/309: Measuring or estimating channel quality parameters - H04B 17/391: Modelling the propagation channel - H04M 1/72403: with means for local support of applications that increase the functionality - H04M 1/724092: {Interfacing with an external cover providing additional functionalities} - H04B 17/26: using historical data, averaging values or statistics - H04M 1/185: {Improving the shock resistance of the housing, e.g. by increasing the rigidity} - H04M 1/72412: using two-way short-range wireless interfaces - H04W 52/50: at the moment of starting communication in a multiple access environment - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - G01R: MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES (indicating correct tuning of resonant circuits H03J3/12) - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H04B: TRANSMISSION - H04M: TELEPHONIC COMMUNICATION (circuits for controlling other apparatus via a telephone cable and not involving telephone switching apparatus G08) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract Techniques are provided for implementing a portable spectrum analyzer. An example system, according to an embodiment, includes a signal analyzer including an RF receiver to receive RF signals from an antenna, an analog-to-digital converter to generate a sampled signal based on the received RF signals, and a signal analysis co-processor to perform cognitive scanning analysis of the sampled signal. The cognitive scanning analysis includes detection, identification, and characterization of digital/analog signal(s) embedded in the sampled signal. The system may further include a communications interface circuit to provide communication between the signal analyzer and an associated mobile host platform (e.g., smartphone). The communication includes transmitting results of the cognitive scanning analysis to the mobile host and receiving parameters from the mobile host to control the operation of the cognitive scanning analysis. The signal analyzer and mobile host are coupled through a shared enclosure such as a hinged case, sleeve, or wallet. ## Claims ### Claim 1 A portable spectrum analyzer, comprising: an interface circuit including a first connector and a second connector; a signal analyzer connected to the first connector, the signal analyzer including a radio frequency (RF) receiver to receive an RF signal from an antenna, the antenna being coupled to the RF receiver, an analog to digital (A/D) converter circuit to generate a sampled signal based on the received RF signal, and a signal processing system to perform a cognitive scanning analysis of the sampled signal, the cognitive scanning analysis including detection, identification, and characterization of one or more digital signals embedded in the sampled signal, based on Tunnelized Cyclo-Stationary Processing; and a mobile host platform detachably connected to the second connector; wherein the interface circuit is configured to provide communication between the signal analyzer and the mobile host platform through the first and second connectors; and wherein the communication includes transmitting of results of the cognitive scanning analysis from the signal analyzer to the mobile host platform, and receiving of parameters by the signal analyzer from the mobile host platform, the parameters being to control operation of the cognitive scanning analysis. ### Claim 2 (depends on 1) The spectrum analyzer of claim 1, wherein the mobile host platform comprises: a user interface; and a host processor to execute a cognitive scanning application to present the results of the cognitive scanning analysis on the user interface and to receive control parameters from a user through the user interface. ### Claim 3 (depends on 1) The spectrum analyzer of claim 1, wherein the interface circuit is a serial interface circuit to support at least one of a universal serial bus (USB) communications link, a micro-USB communications link, and an Ethernet communications link. ### Claim 4 (depends on 1) The spectrum analyzer of claim 1, wherein the results of the cognitive scanning analysis comprise at least one of a power spectral density plot of the detected one or more digital signals, a labeled identification of the detected one or more digital signals, and a list of characteristic parameters associated with the detected one or more digital signals. ### Claim 5 (depends on 1) The spectrum analyzer of claim 1, wherein the signal processing system comprises: a scheduling circuit to control a tuning frequency and bandwidth of the RF receiver; a processing circuit to perform the detection of the one or more digital signals; and a backend processing circuit to classify the detected one or more digital signals based on at least one of Tunnelized Cyclo-Stationary Processing, Exhaustive Cyclo-Stationary Processing, Strip Spectral Correlation Analysis (SSCA), Clustering Analysis, Support Vector Machine (SVM) techniques, Linear Discrimination Analysis, Time Frequency Pattern Analysis, Singular Value Decomposition (SVD), Deep Neural Networks (DNN), Convolutional Neural Networks (CNN), Hidden Markov Models (HMM) and Bayesian Networks (BN). ### Claim 6 (depends on 5) The spectrum analyzer of claim 5, wherein the processing circuit comprises a low complexity processing circuit to perform Higher-Order Statistics Analysis to perform the detection of the one or more digital signals. ### Claim 7 (depends on 5) The spectrum analyzer of claim 5, wherein the backend processing circuit classifies the detected one or more digital signals based on the Time Frequency Pattern Analysis, and the Time Frequency Pattern Analysis employs at least one of Artificial Neural Networks, Bayesian Networks (BN), Deep Neural Networks (DNN), Convolutional Neural Networks (CNN), and Hidden Markov Models (HMM). ### Claim 8 A portable spectrum analyzer, comprising: an interface circuit including a first connector and a second connector; a mobile host platform detachably connected to the first connector, the mobile host platform including a host processor to perform a cognitive scanning analysis of a sampled signal, the cognitive scanning analysis including detection, identification, and characterization of one or more digital signals embedded in the sampled signal, based on Tunnelized Cyclo-Stationary Processing; and a co-processing circuit card connected to the second connector, the co-processing circuit card including a radio frequency (RF) receiver to receive an RF signal from an antenna, the antenna being coupled to the RF receiver, and an analog to digital (A/D) converter circuit to generate the sampled signal based on the received RF signal; wherein the interface circuit is configured to provide communication between the mobile host platform and the co-processing circuit card through the first and second connectors; and wherein the communication includes transmitting of the sampled signal from the co-processing circuit card to the mobile host platform, and receiving of parameters by the co-processing circuit card from the mobile host platform, the parameters being to control at least one of acquisition and processing of the RF signal. ### Claim 9 (depends on 8) The spectrum analyzer of claim 8, wherein the mobile host platform further includes a user interface, and the host processor is further to execute a cognitive scanning application to present results of the cognitive scanning analysis on the user interface and to receive control parameters from a user through the user interface. ### Claim 10 (depends on 8) The spectrum analyzer of claim 8, wherein the interface circuit is a serial interface circuit to support at least one of a universal serial bus (USB) communications link, a micro-USB communications link, and an Ethernet communications link. ### Claim 11 (depends on 8) The spectrum analyzer of claim 8, wherein the mobile host platform is one of a smartphone, a tablet, and a laptop. ### Claim 12 (depends on 8) The spectrum analyzer of claim 8, wherein results of the cognitive scanning analysis comprise at least one of a power spectral density plot of the detected one or more digital signals, a labeled identification of the detected one or more digital signals, and a list of characteristic parameters associated with the detected one or more digital signals. ### Claim 13 A method for signal analysis, the method comprising: controlling, by a signal processor, a tuning frequency and bandwidth of an RF receiver, wherein the signal processor and the RF receiver are integrated on a co-processor circuit card; performing, by the signal processor, a cognitive scanning analysis of an RF signal provided by the RF receiver, the cognitive scanning analysis including detection, identification, and characterization of one or more digital signals embedded in the provided RF signal, based on Tunnelized Cyclo-Stationary Processing; transmitting, by a serial interface, results of the cognitive scanning analysis to a host platform, wherein the host platform is a mobile platform detachably connected to the co-processor circuit card via the serial interface; and receiving, by the serial interface from the host platform, parameters to control operation of the cognitive scanning analysis. ### Claim 14 (depends on 13) The method of claim 13, wherein the serial interface supports at least one of a universal serial bus (USB) communications link, a micro-USB communications link, and an Ethernet communications link. ### Claim 15 (depends on 13) The method of claim 13, wherein the host platform is one of a smartphone, a tablet, and a laptop. ### Claim 16 (depends on 13) The method of claim 13, further comprising executing, by a host processor of the host platform, a cognitive scanning application to present the results of the cognitive scanning analysis on a user interface of the host platform, and to receive control parameters from a user through the user interface. ### Claim 17 (depends on 16) The method of claim 16, wherein the results of the cognitive scanning analysis comprise at least one of a power spectral density plot of the detected one or more digital signals, a labeled identification of the detected one or more digital signals, and a list of characteristic parameters associated with the detected one or more digital signals. ### Claim 18 (depends on 13) The method of claim 13, further comprising performing, by the signal processor, higher-order statistics analysis to perform the detection of the one or more digital signals. ### Claim 19 (depends on 13) The method of claim 13, wherein performing the cognitive scanning analysis comprises classifying, by the signal processor, the detected one or more digital signals based on at least one of Exhaustive Cyclo-Stationary Processing, Clustering Analysis, Support Vector Machine (SVM) techniques, Singular Value Decomposition (SVD), Linear Discrimination Analysis, and Time Frequency Pattern Analysis. ### Claim 20 (depends on 1) The spectrum analyzer of claim 1, wherein the mobile host platform and the signal analyzer are included in different sides of a folding case connected by a hinge, and the interface circuit comprises a cable that routes through the hinge of the folding case. ### Claim 21 (depends on 1) The spectrum analyzer of claim 1, wherein the mobile host platform is one of a smartphone, a tablet, and a laptop. ### Claim 22 (depends on 8) The spectrum analyzer of claim 8, wherein the mobile host platform and the co-processing circuit card are included in a protective case having an outer surface and defining an inner volume, the co-processing circuit card being contained in the inner volume, and the outer surface being configured to allow the mobile host platform to slide in and out of engagement with the protective case. ### Claim 23 (depends on 13) The method of claim 13, wherein the host platform and the co-processor circuit card are included in a protective sleeve, the co-processor circuit card being integrated inside the protective sleeve and the host platform being configured to slide in and out of an outside of the protective sleeve.