摘要:
Some demonstrative embodiments include devices, systems and/or methods of detecting transmitter power. For example, a device may include a power detection circuit, coupled by a first coupler to a transmit chain, to provide a first output representing a measured non-calibrated transmission power over the transmit chain; a reference circuit, coupled to a reference voltage by a second coupler, to provide a second output representing a measured reference coupling factor; and a calibrator to determine a calibrated transmission power over the transmit chain based on the first and second outputs.
摘要:
A transceiver device that performs an intercept point calibration using signal interferers is described. The signal interferers include at least self-generated signal interferers or opportunistic signal interferers in surrounding areas. Due to non-linearity in the transceiver device, intermodulation distortion (IMD) signal components are generated. Filtering of the IMD signal components is performed to allow low-frequency components, such as a second order intermodulation (IM2) to pass through. A dynamic minimization algorithm is performed to minimize distortion effects of the low-frequency components.
摘要:
Some demonstrative embodiments include devices, systems and/or methods of detecting transmitter power. For example, a device may include a power detection circuit, coupled by a first coupler to a transmit chain, to provide a first output representing a measured non-calibrated transmission power over the transmit chain; a reference circuit, coupled to a reference voltage by a second coupler, to provide a second output representing a measured reference coupling factor; and a calibrator to determine a calibrated transmission power over the transmit chain based on the first and second outputs.
摘要:
A transceiver device that performs an intercept point calibration using signal interferers is described. The signal interferers include at least self-generated signal interferers or opportunistic signal interferers in surrounding areas. Due to non-linearity in the transceiver device, intermodulation distortion (IMD) signal components are generated. Filtering of the IMD signal components is performed to allow low-frequency components, such as a second order intermodulation (IM2) to pass through. A dynamic minimization algorithm is performed to minimize distortion effects of the low-frequency components.
摘要:
Some demonstrative embodiments include devices, systems and/or methods of transmitter output power management. For example, a device may include a transmitter capable of generating a wireless communication signal, and maintaining at least one of a peak-to-average-power-ratio (PAPR) of the wireless communication signal and a transmission power of the transmitter substantially unaffected by at least one of a temperature of the transmitter and a supply voltage of the transmitter. Other embodiments are described and claimed.
摘要:
Device, system, and method of low-noise amplifier. For example, an apparatus includes a low-noise amplifier to convert a single-ended wireless communication signal into a corresponding differential signal.
摘要:
An apparatus comprises a transmit network to transmit an input from a first amplifier to an antenna, a receive network to provide an input from an antenna to a second amplifier, a first switch to selectively decouple the transmit network from the antenna, and a second switch to selectively decouple the receive network from the antenna. Other embodiments may be described.
摘要:
Method and apparatus for sensing the displacements of micromachined devices and sensors. The method is referred to as the enhanced modulated integrative differential optical sensing (EMIDOS). The target micromachined proof-mass, for which displacements are measured, includes a grid of slits. The micromachined device is bonded to a CMOS chip containing a matching photodiodes array and their readout electronics. The grid is aligned with the photociiodes. An illumination source, such as an LED, is then mounted above the micromachined device. A model for the noise equivalent displacement (NED), including mechanical, electrical and optical domains, as well as all noise sources is derived. The model predicts that displacements below 10−3 [√{square root over ( )}Hz] can be measured. The design comprises innovative inertial sensors, an accelerometer and a rategyroscope employing the EMIDOS. Performance models for the noise equivalent acceleration (NEA) and noise equivalent rate (NER) are also derived. The models show that an accelerometer with a very low NEA can be realized.
摘要:
A radio-head apparatus can comprise synchronization circuitry to receive transmission data and a phase correction signal. The synchronization circuitry can process the transmission data and the phase correction signal to generate digital transmitter (DTX) codes. The radio-head can further include transmission circuitry to combine the phase correction signal with transmission data codes to be provided to the DTX for transmission over an air interface. Other systems and apparatuses are described.
摘要:
A method for compensating signal nonlinearities includes generating a local oscillator (LO) signal and performing phase modulation of the LO signal to generate a phase-modulated LO signal. The phase modulation is based on applying at least one digital-to-time converter (DTC) code of a plurality of DTC codes to a rising edge signal portion and a falling edge signal portion associated with the LO signal. Nonlinearities associated with the rising edge signal portion and the falling edge signal portion are determined. The at least one DTC code is adjusted based on the nonlinearities.