Patents Assigned to Azimuth Systems, Inc.
  • Patent number: 7693082
    Abstract: A modular test chassis for use in testing wireless devices includes a backplane and a channel emulation module coupled to the backplane. The channel emulation module comprises circuitry for emulating the effects of a dynamic physical environment (including air, interfering signals, interfering structures, movement, etc.) on signals in the transmission channel shared by the first and second device. Different channel emulation modules may be included in the test system depending upon the protocol, network topology or capability under test. A test module may be provided to generate traffic at multiple interfaces of SISO or MIMO DUTs to enable thorough testing of device and system behavior in the presence of emulated network traffic and fault conditions. A latency measurement system and method applies timestamps frames as they are transmit and received at the test module for improved latency measurement accuracy.
    Type: Grant
    Filed: August 19, 2005
    Date of Patent: April 6, 2010
    Assignee: Azimuth Systems, Inc.
    Inventor: Charles R. Wright
  • Patent number: 7349670
    Abstract: A modular test chassis for use in testing wireless devices includes a backplane and a channel emulation module coupled to the backplane. The channel emulation module comprises circuitry for emulating the effects of a dynamic physical environment (including air, interfering signals, interfering structures, movement, etc.) on signals in the transmission channel shared by the first and second device. Different channel emulation modules may be included in the test system depending upon the protocol, network topology or capability under test. A test module may be provided to generate traffic at multiple interfaces of SISO or MIMO DUTs to enable thorough testing of device and system behavior in the presence of emulated network traffic and fault conditions. A latency measurement system and method applies timestamps frames as they are transmit and received at the test module for improved latency measurement accuracy.
    Type: Grant
    Filed: August 19, 2005
    Date of Patent: March 25, 2008
    Assignee: Azimuth Systems Inc.
    Inventors: Fanny Mlinarsky, Charles R. Wright
  • Patent number: 7075893
    Abstract: A method and system for simulating a wireless environment is provided including a central RF combining component; a plurality of connection nodes, each connection node in RF connection with the central RF combining component through a programmable attenuation component; wherein the programmable attenuation components are controlled by a controller console, the controller console maintaining information regarding simulated spatial positioning of the plurality of connection nodes in the simulated wireless environment, and adjusting the programmable attenuation components to appropriately simulate the simulated spatial positioning of the connection nodes in the simulated wireless environment. Additionally, an RF module for creating and receiving RF signals in a test environment is provided.
    Type: Grant
    Filed: February 11, 2004
    Date of Patent: July 11, 2006
    Assignee: Azimuth Systems, Inc.
    Inventors: Fanny I. Mlinarsky, Charles R. Wright, John R. Griesing