Power amplifier with co-existence filter
First Claim
1. A power amplifier architecture for an operating frequency for connecting a transceiver to an antenna and including an input port and an output port, comprising:
- an input matching segment connected to the input port;
an output matching segment connected to the output port;
at least one filter with a range of rejection frequencies within a close proximity to the operating frequency;
an amplifier segment including at least one transistor having a first terminal connected to the input matching segment, a second terminal connected to the output matching segment, and a third terminal connected to the filter in close proximity to a first inductive interconnection tying a junction connected to the third terminal to a ground; and
a compensator connected to the input matching segment and the output matching segment to minimize instability of the filter.
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Accused Products
Abstract
A power amplifier architecture and front end circuits utilizing the same that connect a transceiver to an antenna are disclosed. The transceiver is configured for a specific operating frequency. An input matching segment is connected to an input port, and an output matching segment is connected to an output port. An amplifier segment includes at least one transistor with a first terminal connected to the input matching segment, a second terminal connected to the output matching segment, and a third terminal connected to a filter with a range of rejection frequencies. The filter is connected in close proximity to a first inductive interconnection tying a junction connected to the third terminal to a ground. A compensator is also connected to the input matching segment and the output matching segment to minimize instability of the filter.
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Citations
43 Claims
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1. A power amplifier architecture for an operating frequency for connecting a transceiver to an antenna and including an input port and an output port, comprising:
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an input matching segment connected to the input port; an output matching segment connected to the output port; at least one filter with a range of rejection frequencies within a close proximity to the operating frequency; an amplifier segment including at least one transistor having a first terminal connected to the input matching segment, a second terminal connected to the output matching segment, and a third terminal connected to the filter in close proximity to a first inductive interconnection tying a junction connected to the third terminal to a ground; and a compensator connected to the input matching segment and the output matching segment to minimize instability of the filter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A radio frequency (RF) front end architecture for connecting a transceiver to an antenna, comprising:
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a transmit input port connectible to an output line of the transceiver; a receive output port connectible to an input line of the transceiver; a power amplifier with an operating frequency connected to the transmit input port, the power amplifier including a input matching segment, an output matching segment, and an amplifier segment; a filter with a range of rejection frequencies connected to an emitter side of the amplifier segment; a compensator connected to the output matching segment and the input matching segment of the power amplifier to minimize instability effects associated with the emitter side filter; a low noise amplifier connected to the receive output port; and a switch having a first port connected to the antenna, a second port connected to the low noise amplifier, and a third port connected to the power amplifier, the low noise amplifier and the second being selectively connectible to the antenna by the switch. - View Dependent Claims (22, 23, 24, 25, 26)
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27. An RF front end circuit connecting a first transceiver operating in a first frequency band to a first antenna and a second transceiver operating in a second frequency band to a second antenna, the front end circuit comprising:
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a first power amplifier connectible to a transmit line from the first transceiver; a first low noise amplifier connectible to a receive line from the first transceiver; a second power amplifier connectible to a transmit line from the second transceiver; a second low noise amplifier connectible to a receive line from the second transceiver; and a co-existence filter in a transmit chain defined by an interconnection between the transmit line from the second transceiver and the second antenna including the second power amplifier, the co-existence filter rejecting a portion of a transmitted signal of the second frequency band overlapping in frequency with a reception of the first frequency band; wherein the first power amplifier and the first low noise amplifier are connectible to the first antenna, the second power amplifier and the second low noise amplifier are selectively connectible to the second antenna, and the co-existence filter fabricated on-die together with the second power amplifier and the second low noise amplifier. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34)
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35. A power amplifier architecture for an operating frequency for connecting a transceiver to an antenna and including an input port and an output port, comprising:
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an input matching segment connected to the input port; an output matching segment connected to the output port; at least one filter with a range of rejection frequencies; an amplifier segment including at least one transistor having a first terminal connected to the input matching segment, a second terminal connected to the output matching segment, and a third terminal connected to the filter in close proximity to a first inductive interconnection tying a junction connected to the third terminal to a ground; and a compensator connected to the input matching segment and the output matching segment to minimize instability of the filter; wherein the filter includes a first filter capacitor tied to the junction and a first filter inductor in series with the first filter capacitor and tied to the ground. - View Dependent Claims (36, 37, 38, 39, 40, 41)
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42. A power amplifier architecture for an operating frequency for connecting a transceiver to an antenna and including an input port and an output port, comprising:
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an input matching segment connected to the input port; an output matching segment connected to the output port; at least one filter with a range of rejection frequencies; an amplifier segment including at least one transistor having a first terminal connected to the input matching segment, a second terminal connected to the output matching segment, and a third terminal connected to the filter in close proximity to a first inductive interconnection tying a junction connected to the third terminal to a ground; and a compensator connected to the input matching segment and the output matching segment to minimize instability of the filter, the compensator including a parallel resonant circuit defined by a resonance frequency approximate the operating frequency and including a first compensator capacitor and a compensator inductor, and a second compensator capacitor connected in series with the parallel resonant circuit. - View Dependent Claims (43)
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Specification