Abstract: A method of fabricating a MOS transistor having a thinned channel region is described. The channel region is etched following removal of a dummy gate. The source and drain regions have relatively low resistance with the process.

Abstract: A system comprises a GNSS unit onboard an aircraft, with the GNSS unit operative to generate horizontal and vertical deviation signals. An onboard converter unit is in communication with the GNSS unit, and an onboard radio navigation computer is in communication with the converter unit. The converter unit performs a method for converting the deviation signals to equivalent VHF instrument landing system signals.

Abstract: An antenna switching system comprises an antenna switch module comprising a switch network that includes RF switches connectable to signal receive and transmit paths, and a switch control unit. First and second receiver/transmitter units are connected to the antenna switch module. A single antenna is connected to the receiver/transmitter units through the antenna switch module. The switch control unit receives mutual suppression signal pulses routed from the receiver/transmitter units. The mutual suppression signal pulses are decoded by the switch control unit to generate control signals to open and close the RF switches as needed for a signal transmit operation mode or a signal receive operation mode. The signal transmit operation mode comprises a first transmit mode in which either of the receiver/transmitter units transmits RF signals along the transmit path, or a second transmit mode in which both of the receiver/transmitter units transmit RF signals along the transmit path.

Abstract: An antenna switching system comprises an antenna switch module comprising a switch network that includes RF switches connectable to signal receive and transmit paths, and a switch control unit. First and second receiver/transmitter units are connected to the antenna switch module. A single antenna is connected to the receiver/transmitter units through the antenna switch module. The switch control unit receives mutual suppression signal pulses routed from the receiver/transmitter units. The mutual suppression signal pulses are decoded by the switch control unit to generate control signals to open and close the RF switches as needed for a signal transmit operation mode or a signal receive operation mode. The signal transmit operation mode comprises a first transmit mode in which either of the receiver/transmitter units transmits RF signals along the transmit path, or a second transmit mode in which both of the receiver/transmitter units transmit RF signals along the transmit path.

Abstract: A receiver includes an RF module to receive and down convert multiple types of RF signals received from at least one antenna; a communication unit configured to communicate signals with at least one external device; and a processing unit communicatively coupling the radio frequency module with the communication unit. Processing unit receives operation mode selection. When first operation mode is selected, processing unit receives first input signal from antenna via RF module (the first input signal including ILS signal and/or VOR signal) and outputs first output signal based on first input signal to external device. When second operational mode is selected, processing unit receives second input signal from antenna via radio frequency unit (second input signal including AIS signal including data regarding a current location of remotely located transmitting device) and outputs second output signal based on second input signal to external device.

Abstract: An antenna receiver system is provided. The antenna receiver system includes an E-field antenna, a first H-field antenna, a second H-field antenna; three antenna radio frequency paths to amplify, filter, and convert three respective outputs from the three antennas to respective first, second, and third signals. Filters in the antenna paths simultaneously receive at least two of: eLORAN radio navigation signals from eLORAN ground stations; an EM pulse from lightning; and one of: CW unmodulated signals-ON/OFF modulated signals from a NDB radio navigation ground station; or an AM CW signal received from an AM radio broadcast station. A processor processes the first, second, and third signals and outputs information indicative of two or more of: a geographical latitude and longitude position of the vehicle derived from the eLORAN radio navigation signals; a lightning bearing and a lightning range; and a bearing of the vehicle.

Abstract: A receiver includes an RF module to receive and down convert multiple types of RF signals received from at least one antenna; a communication unit configured to communicate signals with at least one external device; and a processing unit communicatively coupling the radio frequency module with the communication unit. Processing unit receives operation mode selection. When first operation mode is selected, processing unit receives first input signal from antenna via RF module (the first input signal including ILS signal and/or VOR signal) and outputs first output signal based on first input signal to external device. When second operational mode is selected, processing unit receives second input signal from antenna via radio frequency unit (second input signal including AIS signal including data regarding a current location of remotely located transmitting device) and outputs second output signal based on second input signal to external device.

Abstract: In the basic embodiment, the swing training device is a support rod, a first end of which is secured to a hinged mechanism, the hinged mechanism being secured to a support, the opposing end of the support rod having secured thereto a head piece which is engageable with the upper portion of the head or forehead of an athlete, the support rod extending a sufficient distance from its support and hinge mechanism to allow an individual to execute a swing at a stationary ball while the head piece is in contact with the athlete's head, thereby providing tactile feedback.

Abstract: In the basic embodiment, the swing training device is a support rod, a first end of which is secured to a hinged mechanism, the hinged mechanism being secured to a support, the opposing end of the support rod having secured thereto a head piece which is engageable with the upper portion of the head or forehead of an athlete, the support rod extending a sufficient distance from its support and hinge mechanism to allow an individual to execute a swing at a stationary ball while the head piece is in contact with the athlete's head, thereby providing tactile feedback.

Abstract: In the basic embodiment, the golf training device is a support rod, a first end of which is secured to a hinged mechanism, the hinged mechanism being secured to a support, the opposing end of the support rod having secured thereto a head piece or helmet which is engageable with the upper portion of the head or skull of an individual, the support rod extending a sufficient distance from its support and hinge mechanism to allow an individual to execute a golf swing while the head piece is positioned on the golfer's head.

Abstract: In the basic embodiment, the golf training device is a support rod, a first end of which is secured to a hinged mechanism, the hinged mechanism being secured to a support, the opposing end of the support rod having secured thereto a head piece or helmet which is engageable with the upper portion of the head or skull of an individual, the support rod extending a sufficient distance from its support and hinge mechanism to allow an individual to execute a golf swing while the head piece is positioned on the golfer's head.

Abstract: A system and method for generating signals for testing a Very High Frequency Omnidirectional Range (VOR) receiver is described. The system includes a waveform generator and a signal generator. The waveform generator generates a waveform representing a waveform generated by a VOR ground station during operation of a VOR system. The signal generator receives the waveform from the waveform generator and generates a signal for testing the VOR receiver.

Abstract: A system and method for generating signals for testing a Very High Frequency Omnidirectional Range (VOR) receiver is described. The system includes a waveform generator and a signal generator. The waveform generator generates a waveform representing a waveform generated by a VOR ground station during operation of a VOR system. The signal generator receives the waveform from the waveform generator and generates a signal for testing the VOR receiver.

Abstract: An aircraft on-board system for communicating with a ground-based radio transmitter forming a part of a Local Area Augmentation System for aiding in the navigation and landing of the aircraft, comprising a radio receiver adapted to receive signals, including identification signals identifying the Local Area Augmentation System, from the ground-based radio transmitter, a controller coupled to the radio receiver having an entry device for entering the channel number of a desired ground-based radio station and for tuning the on-board radio receiver to a desired frequency and further receiving from the radio signals, including the identification signals, and further having a signaling mechanism for providing to an operator of the aircraft on-board system a message including the identification of the ground-based radio station.

Abstract: A system for providing distance information to the pilot of an aircraft utilizing a GPS Landing System (GLS) Local Area Augmentation System (LAAS) as a navigation and landing aid for the aircraft is provided, which includes a radio receiver adapted to receive signals from a ground-based radio transmitter associated with the LAAS, the signals including signals representing the location of the LAAS. A Global Positioning System (GPS) receiver adapted to receive position signals from GPS satellites and for producing signal representing the location of the aircraft is also provided, as is a controller coupled to the radio receiver and to the GPS receiver for receiving the signals representing the locations of the LAAS and of the aircraft, respectively, and for calculating the distance of the aircraft from the LAAS. A signaling mechanism coupled to the controller provides to the pilot of the aircraft with information representing the distance of the aircraft to the end of the runway.

Abstract: An aircraft on-board system for communicating with a ground-based radio transmitter forming a part of a Local Area Augmentation System for aiding in the navigation and landing of the aircraft, comprising a radio receiver adapted to receive signals, including identification signals identifying the Local Area Augmentation System, from the ground-based radio transmitter, a controller coupled to the radio receiver having an entry device for entering the channel number of a desired ground-based radio station and for tuning the on-board radio receiver to a desired frequency and further receiving from the radio signals, including the identification signals, and further having a signaling mechanism for providing to an operator of the aircraft on-board system a message including the identification of the ground-based radio station.

Abstract: A system for providing distance information to the pilot of an aircraft utilizing a GPS Landing System (GLS) Local Area Augmentation System (LAAS) as a navigation and landing aid for the aircraft is provided, which includes a radio receiver adapted to receive signals from a ground-based radio transmitter associated with the LAAS, the signals including signals representing the location of the LAAS. A Global Positioning System (GPS) receiver adapted to receive position signals from GPS satellites and for producing signal representing the location of the aircraft is also provided, as is a controller coupled to the radio receiver and to the GPS receiver for receiving the signals representing the locations of the LAAS and of the aircraft, respectively, and for calculating the distance of the aircraft from the LAAS. A signaling mechanism coupled to the controller provides to the pilot of the aircraft with information representing the distance of the aircraft to the end of the runway.

Abstract: Squelch circuitry for narrow band audio receivers which uses a sub-audible tone or coded signal to modulate the intermediate frequency in accordance with the presence of a desired broadcast signal and then detects the sub-audible tone frequency or coded signal in the modulated IF frequency to control the audio output of the receiver to an off condition when there is excessive noise.

Abstract: A multi-layered printed wiring board for high frequency application includes a first board of polytetrafluoroethylene (PTFE) having a metallic sheet on each side. The first side is etched to form high frequency circuity using micro-strip technology and the second side being a metallic sheet forming the ground plane. Laminated to the ground plane of the first board is a fiberglass board of thickness, A. Further, laminated to the fiberglass board is a second board of fiberglass having a thickness, A. The second board also has metallic sheets on both side, the side being laminated to the fiberglass board being etched to form strips, prior to being laminated, forming signal and transmission lines utilizing strip-line technology. Vias are formed to interconnect predetermined metallic layers.