RF amplifier circuit arrangement and electronic device
AssigneeRohde & Schwarz GmbH & Co. KG
InventorPaul Lloyd
Life of this patent
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Abstract
The present invention relates to a RF amplifier circuit arrangement for amplifying at least one RF input signal to an output signal for delivery to a load. The RF amplifier circuit arrangement uses a simple and low-cost RF clipping circuit within a load modulated balanced amplifier arrangement which passes RF input signals to output linearly up to the signal input reaches a predefined amplitude. Beyond that predefined amplitude the clipping circuit clips excess amplitudes. The present invention further relates to an electronic device.
Claims20
A RF amplifier circuit arrangement for amplifying at least one radio frequency (RF) input signal, the RF amplifier circuit arrangement comprising:
- an RF signal splitting circuit configured to split a RF input signal into a first RF input signal and a second RF input signal;
- an RF signal clipping circuit configured and arranged such to receive the first RF input signal and to produce a clipped RF input signal thereof;
- a load modulated balanced amplifier (LMBA) coupled to the RF signal splitting circuit and the RF signal clipping circuit, the LMBA comprising a first quadrature hybrid coupler at an input side of the LMBA wherein the first quadrature hybrid coupler is arranged such to receive the clipped RF input signal and the second RF input signal.
An electronic device comprising a RF amplifier circuit arrangement for amplifying at least one radio frequency (RF) input signal, the RF amplifier circuit arrangement comprising:
- an RF signal splitting circuit configured to split a RF input signal into a first RF input signal and a second RF input signal;
- an RF signal clipping circuit configured and arranged such to receive the first RF input signal and to produce a clipped RF input signal thereof;
- a LMBA coupled to the signal splitting device and the amplitude limiting device, the LMBA comprising a first quadrature hybrid coupler at an input side of the LMBA wherein the first quadrature hybrid coupler is arranged such to receive directly the clipped input signal and the second input signal.
Dependencies are inferred from the claim text.