Techniques pertaining to an adaptive/configurable IF wireless receiver are disclosed. Such an adaptive/configurable IF wireless receiver can be used in a Bluetooth device. According to one embodiment of the present invention, a wireless receiver is designed to include a low noise amplifier configured to amplify an input RF signal; an adjustable local RF synthesizer configured to provide a local RF clock signal with variable frequency; a RF mixer configured to down convert the amplified RF signal to an analog IF signal by mixing the local RF clock signal with the amplified RF signal; a filter configured to filter the analog IF signal; an analog to digital converter configured to convert the filtered analog IF signal to a digital IF signal; an adjustable digital local IF synthesizer configured to provide a digital local IF clock signal with variable frequency; a digital mixer configured to down convert the digital IF signal to a baseband signal by mixing the digital local IF clock signal with the digital IF signal; and an IF configuration unit provided to configure the adjustable local RF synthesizer to vary the frequency of the local RF clock signal, and configure the adjustable digital local IF synthesizer to vary the frequency of the digital local IF clock signal.

A method is provided for demodulation of an analog receive signal carrying information, wherein a number of more than two analog signals is formed from the receive signal in separate channels such that the receive signal is multiplied in each case by a period function, the phase thereof respectively differing in the channels, and wherein the multiple signals are each low-pass filtered.

Described herein are systems configured for inter-band carrier aggregation. Systems include a multiplexing circuit having a switching network and diplexers wherein the switching network is configured to share inductors between multiple paths of the multiplexing circuit. The filters can be designed so that when operated simultaneously (e.g., during multi-band operation) the same inductance can be used allowing the switching network to switch in a particular inductance into the path. The described systems can include an inductance that is coupled to an output port so that when operating in single-band mode, the different paths share the same inductance. Relative to other solutions, the described systems can improve performance (e.g., reduce insertion loss), reduce the number of components in the associated module, reduce manufacturing costs, and the like.

A wide bandwidth radio system designed to adapt to various global radio standards and, more particularly, to a radio receiver composed of a demodulator operative to work in a delta sigma mode and a Nyquist mode, and wherein a filter and feedback loop may utilized in response to the modulation mode of an RF signal.

An example circuit includes: a plurality of analog-to-digital converters (ADCs) receiving a respective plurality of analog signals and outputting a respective plurality of digital signals; a coefficient generator circuit outputting a coefficient signal; and a plurality of decimation filters each including a first input that receives a respective one of the plurality of digital signals and a second input that receives the coefficient signal, each of the plurality of decimation filters including a finite impulse response (FIR) filter having a multiplier and a single accumulator.

The disclosure relates to a module for a radio receiver. The module comprises an input terminal; an output terminal; a main signal path for communicating in-phase and quadrature signals between the input terminal and the output terminal; and a second signal path. The second signal path is connected in parallel with the main signal path and is configured to: extract in-phase and quadrature signals from the main signal path; filter the extracted in-phase and quadrature signals; detect an error in the filtered, extracted in-phase and quadrature signals; and apply a correction to in-phase and quadrature signals on the main signal path based on the error.

Methods and systems are provided for converting wideband analog radio frequency (RF) signals. In an implementation, a first wideband analog RF signal may be received and handled. The first wideband analog RF signal comprises one or more first narrowband analog RF signals, with a total of bandwidths of the one or more first narrowband analog RF signals is less than a total bandwidth of the first wideband analog RF signal. Handling the first wideband analog RF signal may including selecting a first subset of analog-to-digital converters (ADCs) from a plurality of analog-to-digital converters (ADCs), with the number of ADCs in the first subset of ADCs being less than a total number of ADCs in the plurality of ADCs, and only the first subset of ADCs may be enabled. Only the one or more first narrowband analog RF signals may be analog-to-digital converted via the first subset of ADCs.

It is provided a remote radio head configured to provide a radio interface for a network node. The remote radio head comprising an antenna, an analog interface for connecting with the network node, radio frequency (RF) circuitry configured to convert between intermediate frequency signals of the analog interface and RF signals of the antenna, digital circuitry configured to process transmission and/or reception signals, a first analog to digital converter (ADC) connected to the digital circuitry, and a first digital to analog converter (DAC) connected to the digital circuitry. The first ADC, the digital circuitry, and the first DAC are connected between the antenna and the analog interface for receiving or transmitting radio signals. A corresponding method is also presented.

A programmable drive-sense unit (DSU) includes a drive-sense circuit operably coupled to a load, wherein the drive-sense circuit is configured to drive and simultaneously to sense the load via a single line, and produce an analog output based on the sensing the load. The programmable DSU also includes an analog to digital circuit operably coupled to the drive-sense circuit, where the analog to digital circuit is operable to generate a digital output based on the analog output and in accordance with one or more programmable operational parameters to achieve one or more of load sensing objectives associated with the sensing of the load and data processing objectives associated with the sensing of the load.

A digital predistortion linearization method is provided for increasing the instantaneous or operational bandwidth for RF power amplifiers employed in wideband communication systems. Embodiments of the present invention provide a method of increasing DPD linearization bandwidth using a feedback filter integrated into existing digital platforms for multi-channel wideband wireless transmitters. An embodiment of the present invention utilizes a DPD feedback signal in conjunction with a low power band-pass filter in the DPD feedback path.