Circuit for controlling switching time of transmitting and receiving signal in wireless communication system
Disclosed herein is a circuit for controlling a switching time of a transmitting and receiving signal in a wireless communication system including: a high speed switch circuit unit receiving a signal transceived through an antenna to perform a high speed switching operation; a low speed switch circuit unit the signal transceived through the antenna to perform a low speed switching operation; and a controlling unit applying a control signal for controlling a switching time to the high speed switch circuit unit or the low speed switch circuit unit.
1. A circuit for controlling a switching time of a transmitting and receiving signal in a wireless communication system, which is a circuit installed between an antenna and a signal transmitter and a signal receiver of a wireless communication device to perform a selective switching operation according to a switching time required in the wireless communication system, the circuit comprising:
a high speed switch circuit unit receiving a signal received from the antenna or a signal to be transmitted through the antenna to perform a high speed switching operation;
a low speed switch circuit unit connected in parallel with the high speed switch circuit unit and receiving the signal received from the antenna or the signal to be transmitted through the antenna to perform a low speed switching operation; and
a controlling unit electrically connected to each of the high speed switch circuit unit and the low speed switch circuit unit and applying a control signal for controlling a switching time to the high speed switch circuit unit or the low speed switch circuit unit,
wherein the control signal is selectively applied from the controlling unit to the high speed switch circuit unit or the low speed switch circuit unit according to the switching time required in the wireless communication system to selectively operate the high speed switch circuit unit or the low speed switch circuit unit.
2. The circuit according to claim 1 , wherein the high speed switch circuit unit includes at least one semiconductor switching element and a resistor.
3. The circuit according to claim 2 , wherein the semiconductor switching element is a field effect transistor (FET).
4. The circuit according to claim 2 , wherein the semiconductor switching element is a metal oxide semiconductor field effect transistor (MOSFET).
5. The circuit according to claim 4 , wherein the semiconductor switching element is an N-type MOSFET.
6. The circuit according to claim 1 , wherein the high speed switch circuit unit is formed of a circuit having two semiconductor switching elements connected in series with each other and a resistor connected to a common connection line commonly connected to gate terminals of each semiconductor switching element.
7. The circuit according to claim 6 , wherein the semiconductor switching element is a field effect transistor (FET).
8. The circuit according to claim 6 , wherein the semiconductor switching element is a MOSFET.
9. The circuit according to claim 8 , wherein the semiconductor switching element is a N-type MOSFET.
10. The circuit according to claim 1 , wherein the low speed switch circuit unit includes at least two semiconductor switching elements and a resistor.
11. The circuit according to claim 10 , wherein the semiconductor switching element is an FET.
12. The circuit according to claim 10 , wherein the semiconductor switching element is a MOSFET.
13. The circuit according to claim 12 , wherein the semiconductor switching element is an N-type MOSFET.
14. The circuit according to claim 1 , wherein the low speed switch circuit unit is formed of a circuit having four semiconductor switching elements connected in series with each other and a resistor connected to a common connection line commonly connected to gate terminals of each semiconductor switching element.
15. The circuit according to claim 14 , wherein the semiconductor switching element is an FET.
16. The circuit according to claim 14 , wherein the semiconductor switching element is a MOSFET.
17. The circuit according to claim 16 , wherein the semiconductor switching element is an N-type MOSFET.
18. The circuit according to claim 1 , wherein the controlling unit is formed of a separate local controller receiving a command associated with the switching time control from a main controlling unit controlling the entire system (circuit) of the wireless communication device to control only a high speed switch circuit unit and the low speed switch circuit unit.
19. The circuit according to claim 1 , wherein the controlling unit is formed integrally with a main control part controlling the entire system (circuit) of the wireless communication device.