Patent application number | Description | Published |
20120242408 | LOW NOISE VARIABLE GAIN AMPLIFIER UTILIZING VARIABLE FEEDBACK TECHNIQUES WITH CONSTANT INPUT/OUTPUT IMPEDANCE - Variable feedback architecture and control techniques for variable gain amplifiers (VGAs) concurrently maintain, across a wide range of VGA gain settings, minimal input and output impedance variations, a low noise figure, low rates of change in noise figure, high signal-to-noise ratio (SNR), high quality of service (QoS), low distortion, high and relatively constant output third order intercept point (i.e., IP3 or TOI). Variable feedback counteracts impedance variations caused by gain variations. Compared to conventional high performance VGAs, noise figure is lower (e.g. 3 dB lower at maximum gain and 12 dB lower at minimum gain) and relatively constant, IP3 is higher and relatively constant, small signal third order intermodulation signal (IM3) tone slope is relatively constant and input and output impedances are relatively constant. As gain decreases, the noise figure advantage is nearly dB per dB compared to conventional high performance VGAs. | 09-27-2012 |
20130257537 | MATCHED FEEDBACK AMPLIFIER WITH IMPROVED LINEARITY - An impedance-matched amplifier utilizing a feed-forward linearization technique involving multiple negative feedbacks and distortion compensation without active tail current sources reduces noise, distortion, power consumption and heat dissipation requirements and increases linearity, dynamic range, signal-to-noise-ratio, sensitivity and quality of service. Some differential amplifier embodiments of the invention consume less than 2 mA at 5 Volts or 10 mW power consumption per 1 mW in peak and sustained output IP3 performance above 40 dBm. In contrast, for an input signal frequency of 200 MHz, a 16 dB gain state-of-the-art differential amplifier consumes 100 mA at 5 Volts with a peak output IP3 of 36 dBm while an implementation of a 16 dB gain differential amplifier embodying the invention consumes 77.7 mA at 5 Volts with a peak output IP3 of 46 dBm and sustained at or above 40 dBm over a wide frequency range. | 10-03-2013 |
20140002214 | MULTI-BIT CELL ATTENUATOR | 01-02-2014 |
20140002282 | HYBRID-CODING FOR IMPROVING TRANSIENT SWITCH RESPONSE IN A MULTI-CELL PROGRAMMABLE APPARATUS | 01-02-2014 |
20140320207 | LOW NOISE VARIABLE GAIN AMPLIFIER UTILIZING VARIABLE FEEDBACK TECHNIQUES WITH CONSTANT INPUT/OUTPUT IMPEDANCE - Variable feedback architecture and control techniques for variable gain amplifiers (VGAs) concurrently maintain, across a wide range of VGA gain settings, minimal input and output impedance variations, a low noise figure, low rates of change in noise figure, high signal-to-noise ratio (SNR), high quality of service (QoS), low distortion, high and relatively constant output third order intercept point (i.e., IP3 or TOI). Variable feedback counteracts impedance variations caused by gain variations. Compared to conventional high performance VGAs, noise figure is lower (e.g. 3 dB lower at maximum gain and 12 dB lower at minimum gain) and relatively constant, IP3 is higher and relatively constant, small signal third order intermodulation signal (IM3) tone slope is relatively constant and input and output impedances are relatively constant. As gain decreases, the noise figure advantage is nearly dB per dB compared to conventional high performance VGAs. | 10-30-2014 |
Patent application number | Description | Published |
20130067281 | TESTING SYSTEM AND METHOD FOR HANDHELD ELECTRONIC DEVICE - A handheld electronic device testing system and a method for testing a handheld electronic device installed with an open operating platform and installed with a test instruction execution program are introduced. The test instruction execution program executes a functional test based on a test instruction received. The testing method involves integrating various test programs with a pre-stored test program library, sending sequentially an instruction to the test instruction execution program with each of the test programs through a transmission line in a scheduled manner, and recording a test result to achieve automated testing. | 03-14-2013 |
20130138381 | HANDHELD ELECTRONIC DEVICE TESTING METHOD - A testing method tests a handheld electronic device installed with an open operating platform and having a touchscreen. The testing method includes the steps of executing a screen test program installed on the open operating platform to start a testing procedure; generating test coordinates by the screen test program; performing a touch selection operation based on the test coordinates by the touchscreen; and performing a functional operation by the open operating platform in response to the touch selection operation. The testing loop is repeatedly executed to simulate the ways a user may exercise touch control over the handheld electronic device to cause the handheld electronic device to hang or cause damage to software programs thereof. Accordingly, the testing method enhances the reliability of testing the handheld electronic device. | 05-30-2013 |
20130139129 | TEST METHOD FOR HANDHELD ELECTRONIC DEVICE APPLICATION - A test method for a handheld electronic device application is introduced. The test method is for testing a handheld electronic device installed thereon with an open operating platform and equipped with a touchscreen by executing a test program installed on the open operating platform to perform a test procedure. The test program identifies selected coordinates displayed on the touchscreen and corresponding to an application, instructs the open operating platform to execute the application based on the selected coordinates, records execution results, and exits an operating interface for the application to execute the application again. The test method cuts labor-related costs, maintains testing stability of the application, and yields reliable test results. | 05-30-2013 |