Qualcomm Incorporated

Nokia Corporation

Nokia Technologies Oy

Rf360 Singapore Pte. Ltd.

Mikko Kaltiokallio

Markus Nentwig

Jussi Ryynanen

Martin Schwab

Jacques-Antoine Damy

Charles Binninger

Aymen Oueslati

An apparatus is disclosed for a reconfigurable filter. In example aspects, the apparatus includes a filter circuit that has a first filter port and a second filter port. The filter circuit includes a filter network, an acoustic resonator, and a switch circuit. The filter network includes one or more acoustic resonators coupled between the first filter port and the second filter port. The acoustic resonator is coupled to the filter network and coupled between the first filter port and the second filter port. The switch circuit is coupled between the acoustic resonator and the second filter port, and the switch circuit is configured to connect the acoustic resonator into a parallel acoustic resonator arrangement in a first state and connect the acoustic resonator into a serial acoustic resonator arrangement in a second state.

Reconfigurable filter

Certain aspects are generally directed to an apparatus for wireless communication, implemented using a configurable phase shifter network. The configurable phase shifter network generally includes a first switch coupled to a common terminal of the phase shifter network, a first phase shifter coupled between a first terminal of the phase shifter network and the first switch, a second switch coupled in parallel with the first phase shifter, a third switch coupled to the common terminal, a fourth switch coupled to the first terminal, and a second phase shifter coupled between the fourth switch and the third switch.

Reconfigurable phase-shifting networks

In some example embodiments, there is provided an apparatus. The apparatus may include a direct current voltage source and/or an alternating current voltage source to track a power envelope of a radio frequency signal. The apparatus may further include first and second power amplifiers with bias voltage inputs and a supply voltage inputs, and a switch matrix. The first input may be coupled to the direct current voltage source, the second input may be coupled to the alternating current voltage source. The outputs may be coupled to the bias and supply inputs to the power amplifiers. The switch matrix may enable activation of the first power amplifier, the second power amplifier, both the first and second power amplifiers, or neither power amplifier.

Reconfigurable bias and supply drivers for radio frequency power amplifiers

An amplifier circuitry having adjustable parameters is presented. The present amplifier circuitry includes a feed-back loop, wherein the feedback loop converts () a signal to another frequency, filters () the signal in the other frequency, and restores () the filtered signal back to the original frequency for inputting the signal to an input of the amplifier (). The feed-back loop implements a band-stop filter () having an adjustable stopband causing the amplifier circuitry to have an adjustable band-pass response. A passband of the amplifier circuitry is changed from one operating frequency to another operating frequency by changing frequency conversion parameters of the feedback loop.

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Espoo, Finland

Mikko Kaltiokallio