MULTI-MODE RADIO FREQUENCY FRONT END MODULE
First Claim
1. A radio frequency (RF) front end circuit for connecting an antenna to a transceiver having a first operating mode, a second operating mode, and a third operating mode, comprising:
- a first set of transmit ports receptive to signals of the first operating mode and the second operating mode from the transceiver;
a second set of transmit ports receptive to signals of the third operating mode from the transceiver;
a first set of power amplifiers for the first operating mode;
a second set of power amplifiers for the second and third operating modes;
a first switch selectively interconnecting a one of the first set of transmit ports to a one of the first set of power amplifiers and a one of the second set of power amplifiers; and
a second switch selectively interconnecting a different one of the first set of transmit ports to a different one of the first set of power amplifiers and a different one of the second set of power amplifiers.
7 Assignments
0 Petitions
Accused Products
Abstract
A radio frequency (RF) front end circuit for connecting an antenna to a transceiver having multiple operating modes is disclosed. The circuit has a first transmit input receptive to signals of a first operating mode and a second operating mode from the transceiver. There is also a second transmit input receptive to signals of a third operating mode from the transceiver. The circuit has a first power amplifier for the first and second operating modes, a second power amplifier for the first operating mode, and a third power amplifier for the second and third operating mode. A first switch network selectively interconnects the first transmit input to a one of the second and third power amplifiers.
-
Citations
50 Claims
-
1. A radio frequency (RF) front end circuit for connecting an antenna to a transceiver having a first operating mode, a second operating mode, and a third operating mode, comprising:
-
a first set of transmit ports receptive to signals of the first operating mode and the second operating mode from the transceiver; a second set of transmit ports receptive to signals of the third operating mode from the transceiver; a first set of power amplifiers for the first operating mode; a second set of power amplifiers for the second and third operating modes; a first switch selectively interconnecting a one of the first set of transmit ports to a one of the first set of power amplifiers and a one of the second set of power amplifiers; and a second switch selectively interconnecting a different one of the first set of transmit ports to a different one of the first set of power amplifiers and a different one of the second set of power amplifiers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
-
-
16. An RF front end circuit for connecting an antenna to a transceiver having a first operating mode, a second operating mode, and a third operating mode, comprising:
-
a first transmit input receptive to signals of the first operating mode and the second operating mode from the transceiver; a second transmit input receptive to signals of the third operating mode from the transceiver; a first power amplifier for the first and second operating mode; a second power amplifier for the first operating mode; a third power amplifier for the second and third operating mode; and a first switch network selectively interconnecting the first transmit input to a one of the second and third power amplifiers. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
-
-
29. A switching module for interconnecting a transceiver with at least two outputs to respective amplifiers having each outputs connectible to an antenna, the switching module comprising:
-
a first transmit input port connectible to the transceiver; a second transmit input port connectible to the transceiver; a first switch network selectively interconnecting the first and second transmit input ports to a first one of the amplifiers; a second switch network selectively interconnecting the first switch network to a second one of the amplifiers; and a third switch network selectively interconnecting the first one of the amplifiers and the second switch network to the antenna. - View Dependent Claims (30)
-
-
31. A front end circuit for connecting an antenna to a transceiver having a GSM (Global System for Mobile Communications) operating mode, an EDGE (Enhanced Data rates for GSM Evolution) operating mode, and a CDMA operating mode, the front end circuit comprising:
-
a combined GSM and EDGE signals transmission port; a CDMA signals transmission port; a GSM amplifier circuit having non-linear operational characteristics; a CDMA amplifier circuit having linear operational characteristics; a switch network selectively interconnecting the combined GSM and EDGE signals transmission port to the CDMA amplifier circuit and to the GSM amplifier circuit; and a multi-position switch interconnecting a selected single one of the GSM amplifier circuit and the CDMA amplifier circuit to the antenna. - View Dependent Claims (32)
-
-
33. An RF switch circuit, comprising:
-
a combination input port receptive to first and second operating mode signals; a single input port receptive to third operating mode signals; a single output port for the first operating mode signals; a combination output port for the second and third operating mode signals; and a switching network with one or more control lines selectively connecting the combination input port to the combination output port, the single input port to the combination output port, and the combination input port to the single output port, the connections of the switching network being selectable by an activation the one or more control lines. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40, 41)
-
-
42. An active switching circuit including first and second input ports and first and second output ports, comprising:
-
a first amplifier segment including a first transistor with a base, a collector and an emitter, the base being connected to the first input port and a first control line; a second amplifier segment including; a second transistor with a base, a collector, and an emitter, the base being connected to a second control line, the collector being connected to a third control line and the first output, and the emitter being connected to the collector of the first transistor; a third transistor with a base connected to a third control line, a collector, and an emitter connected to the emitter of the second transistor and the collector of the first transistor; and a fourth transistor with a base connected to the collector of the third transistor, the base of the third transistor, and the third control line, a collector, and an emitter connected to the second output port; and a third amplifier segment including a fifth transistor with a base, a collector, and an emitter, the base being connected to the first input port and a fourth control line, and the collector being connected to the second output port. - View Dependent Claims (43, 44, 45, 46, 47, 48, 49, 50)
-
Specification