Antenna Transmit Receive Switch
First Claim
Patent Images
1. A circuital arrangement comprising:
- a first port;
a second port;
a third port;
a first transistor arrangement;
a second transistor arrangement;
a first reactive element; and
a control signal;
wherein the circuital arrangement is configured to operate in one of a first mode and a second mode of operation, a mode of operation being determined by the control signal, wherein;
during the first mode of operation, the circuital arrangement is configured to present a first impedance at the first port and a second impedance at the second port and to provide a first electrical conduction path between the second port and the first port through the first transistor arrangement, while isolating the third port from the first electrical conduction path; and
during the second mode of operation, the circuital arrangement is configured to present the first impedance at the first port and a third impedance different from the first impedance and the second impedance at the third port and provide a second electrical conduction path between the third port and the first port through the second transistor arrangement connected in series with the first reactive element, while isolating the second port from the second electrical conduction path.
2 Assignments
0 Petitions
Accused Products
Abstract
An antenna switch is presented. The antenna switch can connect an antenna to either transmit circuitry or receive circuitry, depending on control signals applied to the antenna switch while presenting different impedances to a connected circuitry.
-
Citations
48 Claims
-
1. A circuital arrangement comprising:
-
a first port; a second port; a third port; a first transistor arrangement; a second transistor arrangement; a first reactive element; and a control signal;
wherein the circuital arrangement is configured to operate in one of a first mode and a second mode of operation, a mode of operation being determined by the control signal, wherein;during the first mode of operation, the circuital arrangement is configured to present a first impedance at the first port and a second impedance at the second port and to provide a first electrical conduction path between the second port and the first port through the first transistor arrangement, while isolating the third port from the first electrical conduction path; and during the second mode of operation, the circuital arrangement is configured to present the first impedance at the first port and a third impedance different from the first impedance and the second impedance at the third port and provide a second electrical conduction path between the third port and the first port through the second transistor arrangement connected in series with the first reactive element, while isolating the second port from the second electrical conduction path. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
-
-
27. A circuital arrangement comprising:
-
one or more first ports; one or more second ports; one or more third ports; one or more first transistor arrangements; one or more second transistor arrangements; one or more first reactive elements; and a control signal;
wherein the circuital arrangement is configured to operate in one or both of a first mode and a second mode of operation, wherein;during the first mode of operation, the circuital arrangement is configured to present a first impedance at a selected first port from among the one or more first ports and a second impedance at a selected second port from among the one or more second ports, and provide a first electrical conduction path between the selected second port and the selected first port through a first transistor arrangement of the one or more first transistor arrangements, while isolating the one or more third port and the unselected one or more first and second port from the first electrical conduction path; and during the second mode of operation, the circuital arrangement is configured to present the first impedance at a selected first port from among the one or more first ports and a third impedance at a selected third port from among the one or more third ports, and provide a second electrical conduction path between the selected third port and the selected first port through a second transistor arrangement of the one or more second transistor arrangements connected in series with a corresponding first reactive element of the one or more first reactive elements, while isolating the one or more second port and the unselected one or more first and third port from the second electrical conduction path;
whereinthe first or second modes of operation and the selected first port among the one or more first ports, the selected second port among the one or more second ports and the selected third port among the one or more third ports are selected by the control signal generated from a control unit. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44)
-
-
45. A method for reducing loss in a radio frequency (RF) circuit, the method comprising:
-
during a first RF signal flow, providing a first conduction path between a corresponding first circuit and an antenna match circuit while isolating a second circuit from the first conduction path; during a second RF signal flow, providing a second conduction path between the corresponding second circuit and the antenna match circuit while isolating the first circuit from the second conduction path; based on the providing of the first conduction path, presenting a first impedance to both the first circuit and the antenna match circuit, and based on the providing of the second conduction path, presenting a second impedance to the second circuit and the first impedance to the antenna match circuit, wherein the first impedance value is smaller than the second impedance value. - View Dependent Claims (46, 47, 48)
-
Specification