Abstract: An apparatus is provided that uses the steps of providing a plurality of wireless sensor devices coupled to a controller in a security system configured into a wireless network where at least one is a child sensor device that communicates with the controller through at least first and second parent sensor devices, the child sensor device measuring an environmental parameter within the secured area and transmitting a message to the controller through the at least two parents, the message is transmitted during a first time period and on a first frequency to the first parent and a copy is transmitted during a second time period and on a second frequency to the second parent wherein the first and second times and first and second frequencies are all different and wherein the first and second time periods are directly adjacent to one another in time.

Abstract: An apparatus is provided that uses the steps of providing a plurality of wireless sensor devices coupled to a controller in a security system configured into a wireless network where at least one is a child sensor device that communicates with the controller through at least first and second parent sensor devices, the child sensor device measuring an environmental parameter within the secured area and transmitting a message to the controller through the at least two parents, the message is transmitted during a first time period and on a first frequency to the first parent and a copy is transmitted during a second time period and on a second frequency to the second parent wherein the first and second times and first and second frequencies are all different and wherein the first and second time periods are directly adjacent to one another in time.

Abstract: A torque measurement system that includes a rotor device and a stator device can perform automatic tuning to improve the initial tuning performed during design and assembly. The stator device can include a variable capacitive element and a micro-controller configured to adjust a capacitance value of the variable capacitive element. Additionally or alternatively, the rotor device can include a variable capacitive element and a micro-controller configured to adjust a capacitance value of the variable capacitive element. The adjustment of the capacitive elements can be based on the quality of signal detected at either the rotor device or stator device.

Abstract: A torque measurement system that includes a rotor device and a stator device can perform automatic tuning to improve the initial tuning performed during design and assembly. The stator device can include a variable capacitive element and a micro-controller configured to adjust a capacitance value of the variable capacitive element. Additionally or alternatively, the rotor device can include a variable capacitive element and a micro-controller configured to adjust a capacitance value of the variable capacitive element. The adjustment of the capacitive elements can be based on the quality of signal detected at either the rotor device or stator device.

Abstract: A torque measurement system that includes a rotor device and a stator device can perform automatic tuning to improve the initial tuning performed during design and assembly. The stator device can include a variable capacitive element and a micro-controller configured to adjust a capacitance value of the variable capacitive element. Additionally or alternatively, the rotor device can include a variable capacitive element and a micro-controller configured to adjust a capacitance value of the variable capacitive element. The adjustment of the capacitive elements can be based on the quality of signal detected at either the rotor device or stator device.

Abstract: A method includes, in a physical layer of a communication stack of a wireless communication device, receiving a first radio frequency (RF) signal, converting the first RF signal to a first digital data signal, and passing the first digital data signal to a higher communication stack layer. The method also includes, in the physical layer, receiving a second digital data signal from the higher communication stack layer, converting the second digital data signal to a second RF signal, and transmitting the second RF signal. The method further includes, in the physical layer, forwarding a signal, wherein forwarding comprises receiving a third RF signal, converting the third RF signal to a fourth RF signal, and transmitting the fourth RF signal.

Abstract: A system includes a wireless radio board, an antenna, and a ground pattern having a radio board ground and an antenna ground. At least a portion of the radio board ground and at least a portion of the antenna ground overlap. The radio board ground could include a first portion in a first layer of the ground pattern and a second portion in a second layer of the ground pattern, and the antenna ground could include a first portion in the first layer of the ground pattern. The antenna ground could further include a second portion in the second layer of the ground pattern. The radio board and antenna grounds could be separated by a minimum distance, such as 0.5 mm or 3.0 mm.

Abstract: A torque measurement system that includes a rotor device and a stator device can perform automatic tuning to improve the initial tuning performed during design and assembly. The stator device can include a variable capacitive element and a micro-controller configured to adjust a capacitance value of the variable capacitive element. Additionally or alternatively, the rotor device can include a variable capacitive element and a micro-controller configured to adjust a capacitance value of the variable capacitive element. The adjustment of the capacitive elements can be based on the quality of signal detected at either the rotor device or stator device.

Abstract: A system includes a wireless radio board, an antenna, and a ground pattern having a radio board ground and an antenna ground. At least a portion of the radio board ground and at least a portion of the antenna ground overlap. The radio board ground could include a first portion in a first layer of the ground pattern and a second portion in a second layer of the ground pattern, and the antenna ground could include a first portion in the first layer of the ground pattern. The antenna ground could further include a second portion in the second layer of the ground pattern. The radio board and antenna grounds could be separated by a minimum distance, such as 0.5 mm or 3.0 mm.

Abstract: A process control system having wireless nodes (field devices, routers, wireless gateways, etc.) communicating with enhanced throughput using frequency hopping. The frequency channel using which each node transmits is determined by frequency agility/frequency hopping technique. Multiple nodes then transmit the packets in their respective channels, but in overlapping duration. In one embodiment such a technique is employed in combination with TDMA, with the boundaries of time slots being ‘global’ (same for all the nodes in the network) and thus the overlapping duration equals the duration of the time slot. In an alternative embodiment employed in combination of SDMA, each node transmits in a (substantially) non-overlapping corresponding beam area, but without reference to global boundaries. In yet another alternative embodiment, a combination of SDMA, TDMA and overlapping duration is used.

Abstract: A method includes, in a physical layer of a communication stack of a wireless communication device, receiving a first radio frequency (RF) signal, converting the first RF signal to a first digital data signal, and passing the first digital data signal to a higher communication stack layer. The method also includes, in the physical layer, receiving a second digital data signal from the higher communication stack layer, converting the second digital data signal to a second RF signal, and transmitting the second RF signal. The method further includes, in the physical layer, forwarding a signal, wherein forwarding comprises receiving a third RF signal, converting the third RF signal to a fourth RF signal, and transmitting the fourth RF signal.