Time-division-duplexing type power amplification module
First Claim
Patent Images
1. A TDD power amplification module, comprising:
- a terminal through which a TDD control signal is transmitted;
a first port through which a transmitting signal is inputted and a receiving signal is outputted;
a second port through which the transmitting signal is outputted and the receiving signal is inputted;
first and second transmission lines coupled between the first and second ports to have a quarter of a wavelength of the transmitting and receiving signals and to form a receiving signal path of the receiving signal;
a power amplifier unit amplifying the transmitting signal inputted through the first port to output the amplified transmitting signal to the second port;
first and second switching units provided between the first and second ports and the power amplifier unit, and forming and blocking a transmitting signal path between the first port and the second port through the power amplifier unit;
a third switching unit provided between a junction of the first and second transmission lines and ground to be alternatively turned on and off according to the TDD control signal so as to maintain or block a transmission of the receiving signal; and
third and fourth transmission lines coupled between the terminal and the first and second switching units to transmit the TDD control signal to the first and second switching units as a bias signal, and having a quarter of the wavelength of the transmitting and receiving signals.
1 Assignment
0 Petitions
Accused Products
Abstract
A time division duplex (TDD) type power amplification module, through which a transmitting signal is amplified and a receiving signal is not amplified without amplifying the receiving signal, reduces a power consumption and realizes a class I bluetooth function by being combined with a class II bluetooth module.
-
Citations
17 Claims
-
1. A TDD power amplification module, comprising:
-
a terminal through which a TDD control signal is transmitted; a first port through which a transmitting signal is inputted and a receiving signal is outputted; a second port through which the transmitting signal is outputted and the receiving signal is inputted; first and second transmission lines coupled between the first and second ports to have a quarter of a wavelength of the transmitting and receiving signals and to form a receiving signal path of the receiving signal; a power amplifier unit amplifying the transmitting signal inputted through the first port to output the amplified transmitting signal to the second port; first and second switching units provided between the first and second ports and the power amplifier unit, and forming and blocking a transmitting signal path between the first port and the second port through the power amplifier unit; a third switching unit provided between a junction of the first and second transmission lines and ground to be alternatively turned on and off according to the TDD control signal so as to maintain or block a transmission of the receiving signal; and third and fourth transmission lines coupled between the terminal and the first and second switching units to transmit the TDD control signal to the first and second switching units as a bias signal, and having a quarter of the wavelength of the transmitting and receiving signals. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A bluetooth module, comprising:
-
a bluetooth transceiver having a first terminal through which a transmitting signal and a receiving signal are transmitted, and generating a TDD transmitting and receiving mode control signal; and a TDD power amplification module formed of an integrated circuit, having a second terminal receiving the TDD transmitting and receiving mode control signal, having a first port connected to the first terminal of the bluetooth transceiver, having a second port, amplifying the transmitting signal received from the bluetooth transceiver through the first port to output the amplified transmitting signal through the second port according to the TDD transmitting and receiving mode control signal, and transmitting the receiving signal received through the second port without amplifying the receiving signal; wherein the TDD power amplification module comprises; first and second transmission lines coupled between the first and second ports through first and second capacitors, respectively; a first switch coupled between the second terminal and a first junction between the first capacitor and the first transmission line; a second switch coupled between the second terminal and a second junction between the second capacitor and the second transmission line; and a third switch coupled between ground and a third junction between the first and second transmission lines. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
-
Specification