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2008
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Invention
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Automatic gain control circuit.
A first signal path including a first LNA 3 and a second signal ... |
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Invention
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Tuning circuit and radio receiver using the same.
In a tuning circuit constituted by connecting ... |
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Invention
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Receiver.
There are provided an IF signal generating portion 10 for generating an intermediate f... |
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Invention
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Intermodulation disturbance detecting unit.
There are provided a notch filter 21 for carrying ou... |
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Invention
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Intermodulation disturbance detecting circuit.
There are provided a frequency converting circuit... |
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Invention
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Antenna input circuit. An antenna damping circuit (10) is connected in parallel to an ESD diode (... |
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Invention
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Oscillator. A feedback route is arranged between sources and gates of amplification transistors M... |
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Invention
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Low-noise amplifier. A feedback route is arranged between a source and a gate of an amplification... |
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Invention
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Analog-to-digital converter. a plurality of transistors (N0 to Nn) with different threshold volta... |
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2007
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Invention
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Voltage control oscillation circuit. A voltage control oscillation circuit includes: resistors (R... |
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Invention
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Receiver, digital-analog converter and tuning circuit. An object of the present invention is to p... |
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Invention
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Antenna for portable terminal and portable terminal.
When a coil 1b is arranged at the forward e... |
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Invention
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Mobile device with am radio.
To provide a mobile device with an AM radio which can reduce noise ... |
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2006
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Invention
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Electronic apparatus with speaker.
An electronic apparatus comprising a speaker section 2 for ou... |
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Invention
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Automatic gain controlled circuit and low noise amplifier circuit. An antenna dumping circuit (4)... |
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Invention
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Automatic gain controlled circuit. There are included an A/D converting circuit (10) that convert... |
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Invention
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Receiver.
By A/D converting a signal output from a mixer (4) and inputting the A/D converted sig... |
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Invention
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Receiver. An output signal from a mixer (4) is A/D converted and then inputted to a DSP (8), whic... |
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Invention
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Image processing device. By using correction value tables 2-1 to 2-k of different patterns in acc... |
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Invention
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Frequency converting circuit. A single constant current source (IO) is connected, in a common sou... |
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Invention
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Oscillation circuit.
A first switch (SW1) is connected in series between a first capacitor (1) a... |
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Invention
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Oscillation circuit. A first switch (SW1) is connected in series between a first capacitor (1) an... |
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Invention
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Harmonic suppressing circuit. There are included an LPF (3) and an HPF (4) that are connected in ... |
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Invention
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Differential amplifier. A differential amplifier circuit at the input stage is configured with a ... |
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Invention
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Automatic regulator of filter. A second operational amplifier (7) is arranged, as an interface ci... |
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Invention
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Power amplifier and its idling current setting circuit. An idling current setting circuit (3) com... |
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Invention
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Open gain adjustment circuit for operational amplifier. An operational amplifier comprises: a dif... |
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Invention
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Fm transmitter. An FM transmitter improved in degree of freedom of selecting components. The FM t... |
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Invention
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Oscillator, pll circuit, receiver and transmitter. An oscillator, a PLL circuit, a receiver and a... |
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Invention
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Lc noise filter. Provided is an LC noise filter by which breakage due to static electricity or th... |
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Invention
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Composite band-pass filter and method of filtering quadrature signals.
A composite band-pass fil... |
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Invention
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Composite band-pass filter and method of filtering quadrature signals. A composite band-pass filt... |
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Invention
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Fm transmitter.
An FM transmitter which can be easily connected to an existing computer or the l... |
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Invention
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Fm transmitter. An FM transmitter which can be easily connected to an existing computer or the li... |
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Invention
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Semiconductor device.
A semiconductor device capable of preventing degradation of signal quality... |
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Invention
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Filter circuit. A plurality of low-pass filters (2-1, 2-2, 2-3) are cascaded to the post-stage of... |
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Invention
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Modulating circuit. There are included a first quadrature modulation part (5) that divides an inp... |
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2005
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Invention
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Frequency synthesizer and charge pump circuit used therein. There are included a signal generatin... |
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Invention
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Automatic gain control circuit. A first MOS transistor (M1) and a second MOS transistor (M2) cons... |
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Invention
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Mobile telephone with am radio.
A cellular phone with an AM radio, which can reduce noises, as m... |
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Invention
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Mobile device equipped with am radio.
A mobile device equipped with an AM radio, wherein noise t... |
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Invention
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Power supply method for circuit block of radio-use semiconductor apparatus and radio-use semicond... |
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Invention
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Image processing device and method.
Image processing device and method wherein processing is sim... |
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Invention
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Image processing device.
An image processing device wherein processing is simplified. The image ... |
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Invention
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Method for selecting low if of fm radio tuner, and fm radio tuner using that if. An FM radio tune... |
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Invention
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Stereo separation adjustment circuit and mos integrated circuit thereof.
A stereophonic separati... |
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Invention
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Image rejection curcuit.
In order to provide an image rejection circuit that can reject an image... |
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Invention
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Pilot signal detection circuit and semiconductor integrated circuit equipping the circuit.
The p... |
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2004
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Invention
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Mixer circuit.
A mixer circuit is configured using a CMOS transistor (800), comprising a p-chann... |
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Invention
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Low noise amplifier.
A low noise amplifier is assumed to comprise an MIS transistor and to ampli... |
