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US 8,285,230 B2Granted
Amplifying circuit, semiconductor integrated circuit, wireless transmission system, and communication apparatus
AssigneeSony Corporation
InventorKenji Komori
Life of this patent
Estimating the term…
Abstract
An amplifying circuit includes: an amplifying cell portion configured by cascade-connecting a plurality stage of amplifying cells each including a pair of N-type transistors differentially connected to each other, load resistors and a current source for generating an operating current, and each having a function of amplifying differential signals; a feedback portion configured to feed differential output signals from the amplifying cell in a rear stage side of the amplifying cell portion back to differential input terminals of the amplifying cell on a front stage side; and an input portion configured to supply differential input signals to input terminals in a first stage of the amplifying cell portion.
Claims20
An amplifying circuit, comprising:
- an amplifying cell portion configured by cascade-connecting a plurality stage of amplifying cells each including a pair of N-type transistors differentially connected to each other, load resistors and a current source for generating an operating current, and each having a function of amplifying differential signals;
- a feedback portion configured to feed differential output signals from the amplifying cell in a rear stage side of said amplifying cell portion back to differential input terminals of the amplifying cell on a front stage side;
- and
- an input portion configured to supply differential input signals to input terminals in a first stage of said amplifying cell portion.
1 more element
A semiconductor integrated circuit, comprising:
- an amplifying cell portion configured by cascade-connecting a plurality stage of amplifying cells each including a pair of N-type transistors differentially connected to each other, load resistors and a current source for generating an operating current, and each having a function of amplifying differential signals;
- a feedback portion configured to feed differential output signals from said amplifying cell in a rear stage side of said amplifying cell portion back to differential input terminals of said amplifying cell on a front stage side;
- an input portion configured to supply differential input signals to input terminals in a first stage of said amplifying cell portion;
- and
- a semiconductor substrate in which said amplifying cell portion, said feedback portion, and said input portion are formed.
2 more elements
A wireless transmission system, comprising:
- a first communication apparatus;
- a second communication apparatus;
- and
- a millimeter wave signal transmission path through which information is adapted to be transmitted between said first communication apparatus and said second communication apparatus in a millimeter waveband, and
- each of said first communication apparatus and said second communication apparatus having an amplifying circuit including
- an amplifying cell portion configured by cascade-connecting a plurality stage of amplifying cells each including a pair of N-type transistors differentially connected to each other, load resistors and a current source for generating an operating current, and each having a function of amplifying differential signals,
- a feedback portion configured to feed differential output signals from said amplifying cell in a rear stage side of said amplifying cell portion back to differential input terminals of said amplifying cell on a front stage side, and
- an input portion configured to supply differential input signals to input terminals in a first stage of said amplifying cell portion,
- wherein said first communication apparatus converts a signal as an object of transmission into a millimeter wave signal and amplifies the resulting millimeter wave signal in said amplifying circuit, and transmits the resulting millimeter wave signal thus amplified to said second communication apparatus through said millimeter wave signal transmission path, or said second communication apparatus receives the millimeter wave signal from said first communication apparatus through said millimeter wave signal transmission path and amplifies the millimeter wave signal in said amplifying circuit, and demodulates the millimeter wave signal thus amplified into the signal as the object of the transmission.
6 more elements
A communication apparatus on a transmission side, comprising:
- a signal generating portion on the transmission side configured to signal-process a signal as an object of transmission to generate a millimeter wave signal;
- an amplifying portion configured to amplify the millimeter wave signal generated in said signal generating portion on the transmission side;
- and
- a signal coupling portion on the transmission side configured to couple the millimeter wave signal amplified in said amplifying portion to a millimeter wave signal transmission path through which a millimeter wave signal is transmitted, and
- said amplifying portion including
- an amplifying cell portion configured by cascade-connecting a plurality stage of amplifying cells each including a pair of N-type transistors differentially connected to each other, load resistors and a current source for generating an operating current, and each having a function of amplifying differential signals,
- a feedback portion configured to feed differential output signals from said amplifying cell in a rear stage side of said amplifying cell portion back to differential input terminals of said amplifying cell on a front stage side, and
- an input portion configured to supply the differential millimeter wave signal generated in said signal generating portion on the transmission side as an input signal to input terminals in a first stage of said amplifying cell portion.
5 more elements
A communication apparatus on a reception side, comprising:
- a signal coupling portion on the reception side configured to receive a millimeter wave signal transmitted through a millimeter wave signal transmission path;
- an amplifying portion configured to amplify the millimeter wave signal received in said signal coupling portion on the reception side;
- and
- a signal generating portion on the reception side configured to signal-process the millimeter wave signal amplified in said amplifying portion to generate a signal as an object of transmission, and
- said amplifying portion including
- an amplifying cell portion configured by cascade-connecting a plurality stage of amplifying cells each including a pair of N-type transistors differentially connected to each other, load resistors and a current source for generating an operating current, and each having a function of amplifying differential signals,
- a feedback portion configured to feed differential output signals from said amplifying cell in a rear stage side of said amplifying cell portion back to differential input terminals of said amplifying cell on a front stage side, and
- an input portion configured to supply the millimeter wave signal received in said signal coupling portion on the reception side as an input signal to input terminals in a first stage of said amplifying cell portion.
5 more elements
A communication apparatus, comprising:
- a transmission portion including a signal generating portion on a transmission side configured to signal-process a signal as an object of transmission to generate a transmission signal, and an amplifying portion on the transmission side configured to amplify the transmission signal generated in said signal generating portion on the transmission side;
- and
- a reception portion including an amplifying portion on a reception side configured to amplify a received signal, and a signal generating portion on the reception side configured to signal-process the received signal amplified in said amplifying portion on the reception side to generate the signal as the object of the transmission, and
- said amplifying portion including
- an amplifying cell portion configured by cascade-connecting a plurality stage of amplifying cells each including a pair of N-type transistors differentially connected to each other, load capacitors and a current source for generating an operating current, and each having a function of amplifying differential signals,
- a feedback portion configured to feed differential output signals from said amplifying cell in a rear stage side of said amplifying cell portion back to differential input terminals of said amplifying cell on a front stage side, and
- an input portion configured to supply the differential millimeter wave signal generated in said signal generating portion on the transmission side as an input signal to input terminals in a first stage of said amplifying cell portion.
4 more elements
A communication apparatus, comprising:
- a transmission portion including a signal generating portion on a transmission side configured to signal-process a signal as an object of transmission to generate a transmission signal, and an amplifying portion on the transmission side configured to amplify the transmission signal generated in said signal generating portion on the transmission side;
- or
- a reception portion including an amplifying portion on a reception side configured to amplify a received signal, and a signal generating portion on the reception side configured to signal-process the received signal amplified in said amplifying portion on the reception side to generate the signal as the object of the transmission, and
- said amplifying portion including
- an amplifying cell portion configured by cascade-connecting a plurality stage of amplifying cells each including a pair of N-type transistors differentially connected to each other, load capacitors and a current source for generating an operating current, and each having a function of amplifying differential signals,
- a feedback portion configured to feed differential output signals from said amplifying cell in a rear stage side of said amplifying cell portion back to differential input terminals of said amplifying cell on a front stage side, and
- an input portion configured to supply the differential millimeter wave signal generated in said signal generating portion on the transmission side as an input signal to input terminals in a first stage of said amplifying cell portion.
4 more elements
A communication apparatus on a transmission side, comprising:
- signal generating means on the transmission side for signal-processing a signal as an object of transmission to generate a millimeter wave signal;
- amplifying means for amplifying the millimeter wave signal generated in said signal generating portion on the transmission side;
- and
- a signal coupling portion on the transmission side for coupling the millimeter wave signal amplified in said amplifying portion to a millimeter wave signal transmission path through which a millimeter wave signal is transmitted, and
- said amplifying means including
- an amplifying cell portion configured by cascade-connecting a plurality stage of amplifying cells each including a pair of N-type transistors differentially connected to each other, load resistors and a current source for generating an operating current, and each having a function of amplifying differential signals,
- a feedback portion configured to feed differential output signals from said amplifying cell in a rear stage side of said amplifying cell portion back to differential input terminals of said amplifying cell on a front stage side, and
- an input portion configured to supply the differential millimeter wave signal generated in said signal generating portion on the transmission side as an input signal to input terminals in a first stage of said amplifying cell portion.
5 more elements
A communication apparatus on a reception side, comprising:
- signal coupling means on the reception side for receiving a millimeter wave signal transmitted through a millimeter wave signal transmission path;
- amplifying means for amplifying the millimeter wave signal received in said signal coupling portion on the reception side;
- and
- signal generating means on the reception side for signal-processing the millimeter wave signal amplified in said amplifying portion to generate a signal as an object of transmission, and
- said amplifying means including
- an amplifying cell portion configured by cascade-connecting a plurality stage of amplifying cells each including a pair of N-type transistors differentially connected to each other, load resistors and a current source for generating an operating current, and each having a function of amplifying differential signals,
- a feedback portion configured to feed differential output signals from said amplifying cell in a rear stage side of said amplifying cell portion back to differential input terminals of said amplifying cell on a front stage side, and
- an input portion configured to supply the millimeter wave signal received in said signal coupling portion on the reception side as an input signal to input terminals in a first stage of said amplifying cell portion.
5 more elements
Dependencies are inferred from the claim text.