An on-chip balun comprising a primary side, a secondary side, and an integrated notch filter.

An on-chip balun comprising a primary side, a secondary side, and an integrated notch filter.

A radio frequency (RF) jamming device includes a differential segmented aperture (DSA), a jammer source outputting a jamming signal at one or more frequencies or frequency bands to be jammed, and RF electronics that amplify and feed the jamming signal to the DSA so as to emit a jamming beam. The DSA includes an array of electrically conductive tapered projections, and the RF electronics comprise power splitters configured to split the jamming signal to aperture pixels of the DSA. The aperture pixels comprise pairs of electrically conductive tapered projections of the array of electrically conductive tapered projections. The RF electronics further comprise pixel power amplifiers, each connected to amplify the jamming signal fed to a single corresponding aperture pixel of the DSA. The RF jamming device may include a rifle-shaped housing, with the DSA mounted at a distal end of the barrel of the rifle-shaped housing.

A radio frequency (RF) jamming device includes a differential segmented aperture (DSA), a jammer source outputting a jamming signal at one or more frequencies or frequency bands to be jammed, and RF electronics that amplify and feed the jamming signal to the DSA so as to emit a jamming beam. The DSA includes an array of electrically conductive tapered projections, and the RF electronics comprise power splitters configured to split the jamming signal to aperture pixels of the DSA. The aperture pixels comprise pairs of electrically conductive tapered projections of the array of electrically conductive tapered projections. The RF electronics further comprise pixel power amplifiers, each connected to amplify the jamming signal fed to a single corresponding aperture pixel of the DSA. The RF jamming device may include a rifle-shaped housing, with the DSA mounted at a distal end of the barrel of the rifle-shaped housing.

Disclosed is a phase shifter capable of achieving 360 phase shifts. The phase shifter includes an active balanced-to-unbalanced (balun) circuit for splitting an input signal into two signals offset in phase. The phase shifter further includes an active all-pass network electrically coupled to an output of the active balun circuit. The active all-pass network can include an active tunable inductor. A variable-gain amplifier (VGA) is electrically coupled to an output of the active all-pass network.

Disclosed is a phase shifter capable of achieving 360 phase shifts. The phase shifter includes an active balanced-to-unbalanced (balun) circuit for splitting an input signal into two signals offset in phase. The phase shifter further includes an active all-pass network electrically coupled to an output of the active balun circuit. The active all-pass network can include an active tunable inductor. A variable-gain amplifier (VGA) is electrically coupled to an output of the active all-pass network.

A power sampler may include a sampling circuit interposed in one leg of a differential-signal circuit. An input balun may convert a single-ended signal from a signal source into a differential signal on first and second differential-signal input ports. An output balun may convert an output differential signal to a single-ended output signal to a signal load. The sampling circuit may include an inductance and a coupling circuit. The inductance may be an inductor and have an impedance higher than a source impedance. The coupling circuit, which may be a balun, is connected to the inductance and outputs a single-ended sample signal having a magnitude proportional to the inductance impedance at the design frequency. A second coupling-circuit output conducts an output differential signal and may be connected to the output balun.

A power sampler may include a sampling circuit interposed in one leg of a differential-signal circuit. An input balun may convert a single-ended signal from a signal source into a differential signal on first and second differential-signal input ports. An output balun may convert an output differential signal to a single-ended output signal to a signal load. The sampling circuit may include an inductance and a coupling circuit. The inductance may be an inductor and have an impedance higher than a source impedance. The coupling circuit, which may be a balun, is connected to the inductance and outputs a single-ended sample signal having a magnitude proportional to the inductance impedance at the design frequency. A second coupling-circuit output conducts an output differential signal and may be connected to the output balun.

Embodiments provide an amplification circuit, an apparatus for amplifying, a low noise amplifier, a radio receiver, a mobile terminal, a base station, and a method for amplifying. An amplification circuit for amplifying a radio signal comprises a first amplification stage configured to amplify an input signal, V.sub.in(t), to obtain an intermediate signal. The amplification circuit further comprises a cascoding circuit configured to amplify the intermediate signal to obtain a first output signal V.sub.outn(t). The amplification circuit further comprises a second amplification stage configured to amplify the intermediate signal to obtain a second output signal, V.sub.outp(t).

Embodiments provide an amplification circuit, an apparatus for amplifying, a low noise amplifier, a radio receiver, a mobile terminal, a base station, and a method for amplifying. An amplification circuit for amplifying a radio signal comprises a first amplification stage configured to amplify an input signal, V.sub.in(t), to obtain an intermediate signal. The amplification circuit further comprises a cascoding circuit configured to amplify the intermediate signal to obtain a first output signal V.sub.outn(t). The amplification circuit further comprises a second amplification stage configured to amplify the intermediate signal to obtain a second output signal, V.sub.outp(t).