Techniques maintaining receiver reliability, including determining a present attenuation level for an attenuator, wherein the attenuation level is set by a gain controller, determining a relative reliability threshold based on the present attenuation level, receiving a radio frequency (RF) signal, determining a voltage level of the received RF signal, comparing the voltage level of the received RF signal to the relative reliability threshold to determine that a reliability condition exists, and overriding, in response to the determination that the reliability condition exists, the present attenuation level set by the gain controller with an override attenuation level based on the present attenuation level.

A receiver (100) with an antenna array (150) provides interference reduction for blocking signals received by the receiver (100) by controlling different receiver blocks (110) associated with different antenna elements (112) of the array (150) differently, particularly for those antenna elements (112) in the corner or proximate a corner or edge of the array (150), responsive to a power level of a combined signal resulting from all antenna elements (112). As a result, the solution presented herein enables a receiver (100) to more accurately target the gain control such that the antenna elements (112) and associated receiver circuitry (110) most likely to be impacted by unwanted signals have a reduced gain, while the antenna elements (112) and associated receiver circuitry (110) less likely to be impacted by unwanted signals can operate with a higher gain.

A variable filter and method of switching a resonant frequency of the variable filter from an initial frequency to a desired frequency, where the variable filter has a tunable frequency and a variable Q. With the variable filter operating at the initial frequency and an initial Q, the variable filter is Q-spoiled toward a low-Q state. The variable filter is tuned toward the desired frequency and the tunable resonator is Q-enhanced from the low-Q state to achieve a desired filter response.

An electronic device may include wireless circuitry with a baseband processor, a transceiver circuit, a front-end module, and an antenna. The front-end module may include amplifier circuitry such as a low noise amplifier for amplifying received radio-frequency signals. The low noise amplifier is operable in a non-carrier-aggregation (NCA) mode and a carrier aggregation (CA) mode. The low noise amplifier may include a first input stage, a second input stage, a complementary degeneration transformer, and an input impedance compensation circuit. During the NCA mode, the first input stage is turned on while the second input stage is turned off, the degeneration transformer is controlled to provide maximum inductance, and the compensation circuit is turned on to provide input matching. During the CA mode, the first and second input stages are turned on, the degeneration transformer is adjusted to provide less inductance, and the compensation circuit is turned off.

Techniques maintaining receiver reliability, including determining a present attenuation level for an attenuator, wherein the attenuation level is set by a gain controller, determining a relative reliability threshold based on the present attenuation level, receiving a radio frequency (RF) signal, determining a voltage level of the received RF signal, comparing the voltage level of the received RF signal to the relative reliability threshold to determine that a reliability condition exists, and overriding, in response to the determination that the reliability condition exists, the present attenuation level set by the gain controller with an override attenuation level based on the present attenuation level.

A radar system is disclosed for detecting profiles of objects, particularly in a vicinity of a machine work tool. The radar system uses a direct digital synthesiser to generate an intermediate frequency off-set frequency. It also uses an up-converter comprising a quadrature mixer, single-side mixer or complex mixer to add the off-set frequency to the transmitted frequency. It further uses a down-converter in the receive path driven by the off-set frequency as a local oscillator. The radar system enables received information to be transferred to the intermediate frequency. This in turn can be sampled synchronously in such a way as to provide a complex data stream carrying amplitude and phase information. The radar system is implementable with a single transmit channel and a single receive channel.

A wireless repeater is disclosed. The wireless repeater can include a main booster with a first gain unit with a first adjustable gain and a second gain unit with a second adjustable gain. The wireless repeater can include a front end booster communicatively coupled to the main booster, with a coaxial cable coupled between the main booster and the front end booster. A test signal generator is configured to generate a direct current test signal or a radio frequency test signal to determine a signal loss of the coaxial cable. The wireless repeater can include a control unit to adjust one or more of the first adjustable gain or the second adjustable gain based on the determined signal loss of the coaxial cable.

A signal booster is disclosed that includes a first interface port, a second interface port, a third interface port, a downlink signal splitter device, an uplink signal splitter device, a main booster and a front-end booster. The uplink signal splitter device can include a first uplink splitter port configured to direct uplink signals from the second interface port towards the first interface port. The uplink signal splitter device can include a second uplink splitter port configured to direct uplink signals from the third interface port towards the first interface port. The main booster can include a main downlink amplification path and a main uplink amplification path. The front-end booster can include a front-end downlink amplification path and a front-end uplink amplification path.

Methods, systems, and apparatuses are described herein for improved processing audio in a video stream. A system may split audio in a frame of video content into multiple bands based on their audio levels. The system may then dynamically compress and dynamically normalize the audio level in each band. When dynamically compressing the bands, the system may determine, based on stored information, what audio level range is acceptable for an end user and may smooth and maintain the ranges of the audio to be within the acceptable range. The system may include the dynamically normalized and dynamically compressed frames as a second audio track in the video content. A computing device receiving the video content may select the second audio track during playback. If an end user selects the second audio track, the video is delivered with the modified sound of the second audio track.

An electronic device may include wireless circuitry with a baseband processor, a transceiver circuit, a front-end module, and an antenna. The front-end module may include amplifier circuitry such as a low noise amplifier for amplifying received radio-frequency signals. The low noise amplifier is operable in a non-carrier-aggregation (NCA) mode and a carrier aggregation (CA) mode. The low noise amplifier may include a first input stage, a second input stage, a complementary degeneration transformer, and an input impedance compensation circuit. During the NCA mode, the first input stage is turned on while the second input stage is turned off, the degeneration transformer is controlled to provide maximum inductance, and the compensation circuit is turned on to provide input matching. During the CA mode, the first and second input stages are turned on, the degeneration transformer is adjusted to provide less inductance, and the compensation circuit is turned off.