Patent application number | Description | Published |
20080265992 | Transconductance Stage Arrangement - The present invention relates to a voltage-to-current transconductance stage arrangement comprising a single-ended input, an emitter-coupled pair of transistors, comprising a first transistor and a second transistor, the emitter of a third transistor, being connected to the collector of said first transistor, and differential output. It further comprises at least one common-collector transistor comprising a fourth transistor connected to the base of said second transistor preferably or optionally also and a fifth transistor connected to the base of said third transistor. The size of said fourth, or fourth and fifth transistors considerably exceed the sizes of said second and third transistors. They are biased at ‘off-state’. An extra inductor at the collector of the transistor may be applied to further increase linearity. | 10-30-2008 |
20080287088 | Subharmonically Pumped Mixer - The present invention relates to a sub-harmonically pumped conversion mixer arrangement comprising a transistor arrangement and transistor terminals for application of a local oscillator, LO-, signal and application of a radio frequency, RF-, signal and for extraction of a mixed intermediate frequency, IF-, signal. The transistor arrangement comprises at least one NMOS transistor and at least one PMOS transistor. The drain of said at least one NMOS transistor is interconnected with the drain of said at least one PMOS transistor, and in that the gate of said at least one PMOS transistor is interconnected with the gate of said at least one NMOS transistor. | 11-20-2008 |
20100073100 | METHOD AND ARRANGEMENT FOR A VOLTAGE CONTROLLED OSCILLATOR CIRCUIT - In a voltage controlled oscillator circuit comprising two transistors, the first terminals of each said two transistors, are coupled together and to a supply voltage, two interconnected resonator units, and each of said two resonator units couples a respective second terminal of said two transistors to third terminals of both said transistors. | 03-25-2010 |
20100141325 | METHOD AND ARRANGEMENT FOR A LINEAR MIXER - A combination mixer arrangement comprising a first mixer and a second mixer coupled in parallel between first and second input ports and an output port. The mixers are arranged to be driven simultaneously by an input signal provided at the second input port. They are de-coupled, so a bias voltage applied at the first input port provides dc bias simultaneously for the mixers to enable gain expansion of the first mixer responsive to an increase in said input signal and thereby an improved linearity for the combination mixer arrangement. | 06-10-2010 |
20100207695 | Hartley Voltage Controlled Oscillator - In a Hartley voltage controlled oscillator (VCO) circuit comprising two inductors (L | 08-19-2010 |
20100271086 | DUAL-BAND COUPLED VCO - In a dual band capable voltage controlled oscillator VCO circuit comprising two voltage controlled oscillator units VCO | 10-28-2010 |
20110001540 | COMBINED MIXER AND BALUN DESIGN - A circuit with inputs for first (LO) and second (IF) unbalanced signals at respective first and second frequencies, also comprising a mixer for the first and second input signals to produce a third signal (RF) at a third frequency at an output port. The mixer comprises first and second transistors which are cross-coupled to each other. Output terminals of the transistors are connected to the output port, and the mixer also comprises a first impedance connected to ground. The mixer, by means of the transistors and the first impedance is an active balun for the first input signal (IF), and the input port for the second signal (LO) comprises a second impedance, so that the first and second impedances together act as a passive balun for the second signal (LO). | 01-06-2011 |
20110074513 | Dual-Band Voltage-Controlled Oscillator Arrangement - In a dual-band capable voltage-controlled oscillator (VCO) device at least two voltage-controlled oscillator units (VCO1, VCO2) are coupled via a reactive component (A) and each said at least one voltage-controlled oscillator unit (VCO1, VCO2) further being connected to at least a respective external switching device (B1, B2) adapted to control an operating frequency of the A (VCO) device. | 03-31-2011 |
20110095792 | FREQUENCY MULTIPLIER - A frequency multiplier including some embodiments, the frequency multiplier includes: a first transistor and a second transistor, wherein a first terminal of the first transistor is connected to a third terminal of the second transistor through a first capacitor, and a first terminal of the second transistor is connected to a third terminal of the first transistor through a second capacitor. The frequency multiplier also includes a balun, wherein the third terminal of the first transistor is connected to a terminal of the balun, and the third terminal of the second transistor is connected to a different terminal of the balun. | 04-28-2011 |
20110215876 | METHOD AND ARRANGEMENT FOR VOLTAGE CONTROLLED OSCILLATOR DEVICE - Embodiments of the present invention relate to a self injection locked voltage controlled oscillator arrangement, a pair of coupled first and second voltage controlled oscillator devices are arranged on a chip, an amplifier device is arranged on the same of the refection type chip, and an off-chip delay line is arranged with one terminal connected to an output terminal of the coupled first and second voltage controlled oscillator devices, and on terminal adapted to reflect a signal from the output terminal, the amplifier device being arranged to amplify an injection signal from said output terminal and to supply the amplified injection signal to one of said first and second voltage controlled oscillation devices to provide a VCO arrangement that exhibits low phase noise and a small size. | 09-08-2011 |
20120032746 | OSCILLATOR CIRCUIT - An oscillator circuit ( | 02-09-2012 |
20120062304 | IMPROVED MIXER CIRCUIT - The invention discloses a mixer circuit ( | 03-15-2012 |
20120262248 | BALUN - An arrangement ( | 10-18-2012 |
20130009627 | PHASE DETECTOR - A phase detector ( | 01-10-2013 |
20130038376 | Frequency Tunable Signal Source - A frequency tunable signal source ( | 02-14-2013 |
20130176084 | SIX-PORT CIRCUIT - A six-port circuit ( | 07-11-2013 |
20130278351 | WAVEGUIDE BASED FIVE OR SIX PORT CIRCUIT - A five-six-port circuit comprising a waveguide on a main surface of a substrate. The hollow waveguide comprises probes arranged longitudinally inside the hollow waveguide arranged to contact the input port of one of three power detectors, whose output ports are arranged to contact the input port of one power detector. The output ports of the power detectors contact the conductor of an open waveguide which extends in parallel to the hollow waveguide. The probes are equidistantly spaced with a distance of L. The circuit also comprises three LP filters, each of which is connected to the conductor of the open waveguide at a position which corresponds to the position of one of the power detectors. | 10-24-2013 |
20140015625 | DUAL MODE FILTER - A dual mode filter ( | 01-16-2014 |
20140030992 | MIXER CIRCUIT - A mixer circuit ( | 01-30-2014 |
20140349600 | SUBHARMONIC MIXER - A sub-harmonic mixer comprising a mixer circuit with input ports for RF and LO signals, and an output port for the product of the signals at the input ports, and an LO switching stage with input ports for an LO signal and the LO signal phase shifted 180 degrees. The LO switching stage comprises a third input port to which the output port of the mixer circuit is connected and a first output port for the product of the signal at its third and first input ports, and a second output port for the product of the signal at the third and second input ports with the same amplitude as the first output signal 180 degrees phase shifted. In the sub-harmonic mixer the mixer circuit comprises a transconductance mixer. | 11-27-2014 |