Abstract: A method for controlling local oscillator (LO) feed-through in a direct transmitter includes detecting a signal level corresponding to LO feed-through in a radio frequency (RF) signal that is output by a direct transmitter. Responsive to detecting the signal level corresponding to LO feed-through, DC offset levels are modified for an in-phase (I) signal and/or a quadrature-phase (Q) signal in the direct transmitter.

Abstract: According to an exemplary embodiment, a transmitter system includes a power amplifier receiving a supply voltage and a supply current from a power control/current detection circuit, where the power amplifier drives a load impedance. The transmitter system further includes a power correction module configured to sample the supply current and to cause a change in a control voltage, which corrects the supply voltage in response to a change in the load impedance. The supply voltage is corrected to cause the power amplifier to have a substantially constant output power. The power correction module is further configured to output a corrected peak voltage determined by an average value of the supply current. The transmitter system further includes a predistortion module configured to determine the control voltage from a product of the corrected peak voltage and an amplitude modulation component and to output the control voltage to the power control/current detection circuit.

Abstract: Second-order intermodulation distortion can be suppressed in a direct conversion radio receiver having a downconversion mixer by calibrating resistors and a current source in the mixer. A test signal is applied to the signal inputs of the mixer transconductor. The resistances of first and second variable resistor circuits connected to the switching quad are then varied while also varying a variable current source. Each time the resistances and current are set to new values, the resulting mixer output signal is measured. When the measured output signal is determined to be at a minimum, the variable resistors and current source are left at the corresponding values to which they have been set. Adjusted in this manner, the current source counteracts the DC offset voltage at the mixer output.

Abstract: A gallium arsenide (GaAs) integrated circuit device is provided. The GaAs circuit device has a GaAs substrate with a copper contact layer for making electrical ground contact with a pad of a target device. Although copper is known to detrimentally affect GaAS devices, the copper contact layer is isolated from the GaAs substrate using a barrier layer. The barrier layer may be, for example, a layer of nickel vanadium (NiV). This nickel vanadium (NiV) barrier protects the gallium arsenide substrate from the diffusion effects of the copper contact layer. An organic solder preservative may coat the exposed copper to reduce oxidation effects. In some cases, a gold or copper seed layer may be deposited on the GaAs substrate prior to depositing the copper contact layer.

Abstract: A system for detecting a broadcast channel in a radio receiver includes a receive signal strength indicator (RSSI) element configured to develop an RSSI signal that is representative of a power in a desired channel, a switchable bandwidth channel select filter having a power detector configured to compare a power output of the desired channel and at least one channel adjacent to the desired channel to develop a signal to adjacent channel power ratio (SACPR) signal that is representative of the noise in the desired channel, and a seek element configured to determine whether the RSSI signal is greater than a predetermined RSSI threshold and configured to determine whether the SACPR signal is greater than a predetermined SACPR threshold.

Abstract: A vane that can be mounted to a projectile to provide stability of flight, without substantially degrading speed due to added weight and/or causing clearance concerns. The vane is approximately 1.85 inches long and 0.465 inches high with a front-edge and a back-edge that meet at a point. The back-edge arcs down towards the base of the vane while the front edge degrades in a substantially linear fashion to the base of the vane.

Abstract: The present invention provides body-shaping apparel designed to lift and support the lower portion of a person's buttocks relative to the top of the person's thighs that include a pair of loop straps that are dimensioned to encircle and engage the top of a person's thigh at the juncture of the thigh and buttock and to lift and support a buttock upwardly relative to the top of the person's thigh.

Abstract: A telecommunication system includes a processor, interfaces in communication with the public telephone network and a data network, respectively, and a memory. The memory comprises executable instructions that when executed by the processor direct the system to controllably permit access to a teleconference bridge in response to a communication from a mobile-communication device that includes information responsive to a previously communicated license key. Generally, the communication is in the form of a call from the user of the mobile-communication device. Upon receipt of the call, the telecommunication system confirms that the mobile-communication device communicates a pass code that was included in an encrypted form in the license key.

Abstract: A power amplifier bias circuit having a controllable current profile includes a first transistor device configured as a switch, and configured to receive a non-regulated system voltage, and a plurality of resistors configured to provide a current and configured to determine an amount of a bias current that flows through a second transistor device, where the second transistor device is part of a current mirror comprising a third transistor device and the amount of bias current flowing through the second transistor device determines a power output of the third transistor device.

Abstract: A switch element includes a switch device having a drain, a source and a plurality of gates, and at least one additional interconnect located between the plurality of gates, the additional interconnect operative to establish a constant potential between the at least two gates.

Abstract: A power amplifier includes a plurality of amplification paths in which at least one amplification path is selectively enabled and disabled, wherein each amplification path includes an output impedance modification element and an output phase shift element that is operable independently from the output impedance modification element, and wherein the output impedance modification element in each amplification path provides selective impedance for each amplification path.

Abstract: A system and a method for providing remote supervisory override of a lockout at a workstation is disclosed. The system includes a first workstation and a second workstation. The first workstation has lockout functionality, wherein at least a portion of the functionality of the workstation is locked when a lockout module in the first workstation detects a violation of a predetermined rule. The first workstation includes an override request module that sends an override request message to the second workstation, which is associated with a supervisor. The second workstation includes an override response module that the supervisor uses to send an override response message back to the first workstation. When the first workstation receives an override response message that authorizes overriding the rule, the first workstation is unlocked.

Abstract: A media rich SIP servlet is enabled using a media control layer and a conventional SIP Servlet container. The media rich SIP servlet provides a media control API that can be used by SIP-based application developers to incorporate media rich functions into SIP-based applications. The media rich SIP servlet includes an advanced call control API, which enhances the basic call control functions provided by a SIP servlet. The media rich SIP servlet provides call and media control primitives for use by SIP servlet based applications, thereby enabling media rich SIP servlet based applications.

Abstract: Personalized RSS feeds that are created for a user based on information associated with the user are generally unique and initially empty. By creating a generic RSS feed for receiving generic content items, the personalized RSS files can be pre-populated by copying the generic contents into the personalized RSS feeds. In addition, as content is received for a personalized RSS feed, the index files and/or the HTML based content files can be examined to identify expired items and then to delete the expired items.

Abstract: The user interface to a video based telecommunications system is enriched by the provision of multi-media user interfaces. The user interface may include active video portions along with instructional audio or may be icons or thumbnails representing available video information. Menu structures can be animated by changing the color or characteristics of the menu items in synchronization with the audio information and responsive to actions taken by the user.

Abstract: Microprocessor technology is used to detect routine sounds in a substantially enclosed environment to determine normal or abnormal activity or noise within the environment (i.e., habitual behavior of an individual) A device is situated in a substantially enclosed environment with audio input device similar to a microphone and an optional visual display for interaction with the local users. The device has the ability to be controlled locally via key-pad or USB port connected to a local laptop computer, or remotely via a phone line or Ethernet connection to internet. The device further performs audio pattern recognition using waveform matching scheme to detect the occurrence of pre-programmed sounds representing routine activities. The microprocessor counts the number occurrence of each recognizable sound for a particular interval and over a length of a day or other duration and reports to a remote server. The remote server performs tracking and trending analysis to a web-based caregiver client.

Abstract: A system for detecting and minimizing interference in a radio receiver includes a plurality of bandpass filters having different response characteristics, a power detector configured to compare a power output of a first bandpass filter and a second bandpass filter, and logic to cascade a third bandpass filter when the difference in power output between the power output of the first bandpass filter and the power output of the second bandpass filter exceeds a threshold amount.