Push-pull power amplifier
First Claim
Patent Images
1. A push-pull power amplifier for amplifying an input radio frequency signal, comprising;
- an input terminal for receiving an input radio-frequency signal;
an output terminal for outputting an amplified radio-frequency signal;
an integrated circuit chip having a first pair of active devices, the chip having a control terminal and at least one current-carrying terminal associated with each active device, the currents flowing through the current-carrying terminals depending upon the signals applied to the control terminals;
a substrate having a plurality of terminals, the chip being mounted with each chip terminal flip mounted onto a corresponding substrate terminal;
an input electromagnetic coupling means formed on the substrate and having an input primary conductor electrically coupled between the input terminal and the substrate terminal corresponding to the control terminal of a first one of the pair of active devices, and an input secondary conductor electromagnetically coupled to the input primary conductor and electrically coupled between an input reference potential and the substrate terminal corresponding to the control terminal of a second one of the pair of active devices; and
an output electromagnetic coupling means also formed on the substrate and having a primary conductor electrically coupled between the substrate terminal corresponding to one of the current-carrying terminals of the first active device and the output terminal, and an output secondary conductor mutually electromagnetically coupled to the output primary conductor and electrically coupled between the substrate terminal corresponding to one of the current-carrying terminals of the second active device and an output reference potential;
the signal on the output terminal being a combination of the signals being conducted by the pair of active devices.
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Abstract
A means of connecting a plurality of essentially identical active devices is presented for the purpose of multifunction and multiple function operation. These devices, mounted on a chip, are flip-mounted to a circuit motherboard having large passive elements. A push-pull amplifier is presented as an example in which the multiple function operation is the combining of amplifiers whose active devices are on a single chip. The electromagnetic coupling, impedance matching and signal transmission are variously provided by the use of striplines, slotlines, coplanar waveguides, and a slotline converted into a coplanar waveguide.
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Citations
17 Claims
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1. A push-pull power amplifier for amplifying an input radio frequency signal, comprising;
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an input terminal for receiving an input radio-frequency signal; an output terminal for outputting an amplified radio-frequency signal; an integrated circuit chip having a first pair of active devices, the chip having a control terminal and at least one current-carrying terminal associated with each active device, the currents flowing through the current-carrying terminals depending upon the signals applied to the control terminals; a substrate having a plurality of terminals, the chip being mounted with each chip terminal flip mounted onto a corresponding substrate terminal; an input electromagnetic coupling means formed on the substrate and having an input primary conductor electrically coupled between the input terminal and the substrate terminal corresponding to the control terminal of a first one of the pair of active devices, and an input secondary conductor electromagnetically coupled to the input primary conductor and electrically coupled between an input reference potential and the substrate terminal corresponding to the control terminal of a second one of the pair of active devices; and an output electromagnetic coupling means also formed on the substrate and having a primary conductor electrically coupled between the substrate terminal corresponding to one of the current-carrying terminals of the first active device and the output terminal, and an output secondary conductor mutually electromagnetically coupled to the output primary conductor and electrically coupled between the substrate terminal corresponding to one of the current-carrying terminals of the second active device and an output reference potential; the signal on the output terminal being a combination of the signals being conducted by the pair of active devices. - View Dependent Claims (12, 13, 17)
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2. An amplifier for amplifying an input radio frequency signal comprising first and second push-pull amplifiers, each push-pull power amplifier comprising:
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an input terminal for receiving an input radio-frequency signal; an output terminal for outputting an amplified radio-frequency signal; a first pair of active devices having respective control terminals and current-carrying terminals, the current flowing through the current-carrying terminals depending upon the signal applied to the control terminal, one of the current-carrying terminals of each of the active devices being coupled together; an input electromagnetic coupling means having an input primary conductor electrically coupled between the input terminal and the control terminal of a first one of the pair of active devices, and an input secondary conductor electromagnetically coupled to the input primary conductor and electrically coupled between an input reference potential and the control terminal of a second one of the pair of active devices; and an output electromagnetic coupling means having a primary conductor electrically coupled between the other of the current-carrying terminals of the first active device and the output terminal, and an output secondary conductor mutually inductively coupled to the output primary conductor and electrically coupled between the other of the current-carrying terminals of the second active device and an output reference potential; the signal on the output terminal being a combination of the signals being conducted by the pair of active devices, and the input secondary conductors of each of the first and second amplifiers being coupled together. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11)
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14. A push-pull power amplifier for amplifying an input radio frequency signal, comprising:
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an input terminal for receiving an input radio-frequency signal; an output terminal for outputting an amplified radio-frequency signal; a first pair of active devices having respective control terminals and current-carrying terminals, the current flowing through the current-carrying terminals depending upon the signal applied to the control terminal, one of the current-carrying terminals of each of the active devices being coupled to a reference potential; an input electromagnetic coupling means having an input primary conductor electrically coupled between the input terminal and the control terminal of a first one of the pair of active devices, and an input secondary conductor electromagnetically coupled to the input primary conductor and electrically coupled between an input reference potential and the control terminal of a second one of the pair of active devices; and an output electromagnetic coupling means having a primary conductor electrically coupled between the other of the current-carrying terminals of the first active device and the output terminal, and an output secondary conductor mutually inductively coupled to the output primary conductor and electrically coupled between the other of the current-carrying terminals of the second active device and an output reference potential; the signal on the output terminal being a combination of the signals being conducted by the pair of active devices, and at least one of the input and output coupling means comprising a U-shaped slotline having a first portion extending adjacent to a second portion. - View Dependent Claims (15, 16)
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Specification