Impedance matching arrangement for amplifier having split shunt capacitor and amplifier including the same
First Claim
1. An amplifier, comprising:
- an input port and an output port;
first, second, and third gain elements, each having an input terminal and an output terminal;
an input matching network connected between the input port and the input terminals of the first, second, and third gain elements; and
an output matching network connected between the input port and the output terminals of the first, second, and third gain elements,wherein the input matching network comprises;
a first input capacitor having a first electrode and having a second electrode connected to a supply voltage,a second input capacitor having a first electrode and having a second electrode connected to the supply voltage,a first input inductor connected between the input port and the first electrodes of the first and second input capacitors;
a second input inductor connected between the first electrode of the first input capacitor and the input terminal of the first gain element,a third input inductor connected between the first electrode of the first input capacitor and the input terminal of the second gain element,a fourth input inductor connected between the first electrode of the second input capacitor and the input terminal of the second gain element, anda fifth input inductor connected between the first electrode of the second input capacitor and the input terminal of the third gain element, andwherein the output matching network comprises;
first output capacitor having a first electrode and having a second electrode connected to the supply voltage,a second output capacitor having a first electrode and having a second electrode connected to the supply voltage,a first output inductor connected between the output port and the first electrodes of the first and second output capacitors;
a second output inductor connected between the first electrode of the first output capacitor and the output terminal of the first gain element,a third output inductor connected between the first electrode of the first output capacitor and the input terminal of the second gain element,a fourth output inductor connected between the first electrode of the second output capacitor and the output terminal of the second gain element, anda fifth output inductor connected between the first electrode of the second output capacitor and the output terminal of the third gain element.
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Accused Products
Abstract
An amplifier having an operating frequency includes: an input port and an output port; three gain elements, each having an input terminal and an output terminal; an input matching network; and an output matching network. The input matching network includes: a first microstrip line which is connected to the input port and is an inductor at the operating frequency; a second microstrip line extending between the input terminals of the three gain elements; and a first split shunt capacitor connecting the first microstrip line to the second microstrip line. The output matching network includes: a third microstrip line which is connected to the output port and is an inductor at the operating frequency; a fourth microstrip line extending between the output terminals of the three gain elements; and a second split shunt capacitor connecting the third microstrip line to the fourth microstrip line.
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Citations
20 Claims
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1. An amplifier, comprising:
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an input port and an output port; first, second, and third gain elements, each having an input terminal and an output terminal; an input matching network connected between the input port and the input terminals of the first, second, and third gain elements; and an output matching network connected between the input port and the output terminals of the first, second, and third gain elements, wherein the input matching network comprises; a first input capacitor having a first electrode and having a second electrode connected to a supply voltage, a second input capacitor having a first electrode and having a second electrode connected to the supply voltage, a first input inductor connected between the input port and the first electrodes of the first and second input capacitors; a second input inductor connected between the first electrode of the first input capacitor and the input terminal of the first gain element, a third input inductor connected between the first electrode of the first input capacitor and the input terminal of the second gain element, a fourth input inductor connected between the first electrode of the second input capacitor and the input terminal of the second gain element, and a fifth input inductor connected between the first electrode of the second input capacitor and the input terminal of the third gain element, and wherein the output matching network comprises; first output capacitor having a first electrode and having a second electrode connected to the supply voltage, a second output capacitor having a first electrode and having a second electrode connected to the supply voltage, a first output inductor connected between the output port and the first electrodes of the first and second output capacitors; a second output inductor connected between the first electrode of the first output capacitor and the output terminal of the first gain element, a third output inductor connected between the first electrode of the first output capacitor and the input terminal of the second gain element, a fourth output inductor connected between the first electrode of the second output capacitor and the output terminal of the second gain element, and a fifth output inductor connected between the first electrode of the second output capacitor and the output terminal of the third gain element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An amplifier configured to operate at an operating frequency, the amplifier comprising:
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an input port and an output port; first, second, and third gain elements, each having an input terminal and an output terminal; an input matching network; and an output matching network, wherein the input matching network comprises; a first microstrip line connected to the input port arid being configured to be an input inductor at the operating frequency of the amplifier, a second microstrip line extending between the input terminals of the first, second and third gain elements, and a first split shunt capacitor connecting the first microstrip line to the second microstrip line, and wherein the output matching network comprises; a third microstrip line connected to the output port and being configured to be an output inductor at the operating frequency of the amplifier, a fourth microstrip line extending between the output terminals of the first, second and third gain elements, and a second split shunt capacitor connecting the third microstrip line to the fourth microstrip line. - View Dependent Claims (17, 18, 19, 20)
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Specification