Transmitting-receiving switch-over device complete with semiconductors
First Claim
1. A transmitting-receiving switch over circuit arrangement comprising:
- (a) a circuit junction point (P),(b) a transmitter output (TX) for providing a radio frequency transmitter output signal,(c) a transmitting first circuit section connecting said transmitter output (TX) to said circuit junction point (P) for transmitting said radio frequency transmitter output signal to said circuit junction point (P),(d) an antenna output terminal (ANT) coupled to said circuit junction point (P) for transmitting said radio frequency transmitter output signal or for receiving a radio frequency receiver input signal,(e) a receiver input terminal (RX) for receiving said radio frequency receiver input signal,(f) a receiving second circuit section connecting said receiver input terminal (RX) to said circuit junction point (P) for feeding said radio frequency receiver input signal to said receiver input terminal (RX),(g) a controllable first semiconductor radio frequency switch (D1, D4, D6) connected to said transmitting circuit section,(h) a first control input (VC1) connected to said first semiconductor radio frequency switch (D1, D4, D6) for supplying a first control signal to said first semiconductor radio frequency switch (D1, D4, D6) to close or open said first semiconductor frequency switch (D1, D4, D6),(i) a controllable second semiconductor radio frequency switch (D2, D3, D5, D7) connected to said receiving circuit section, and(j) a second control input (VC2) connected to said second semiconductor radio frequency switch (D2, D3, D5, D7) for supplying a second control signal to said second semiconductor radio frequency switch (D2, D3, D5, D7) for controlling said second semiconductor radio frequency switch to assume any one of three stages;
open for blocking said receiver input signal, closed for passing said receiver input signal, and attenuated for damping said receiver input signal, whereby at least said second controllable semiconductor radio frequency switch (D2, D3, D5, D7) is controllable independently of any control of said first semiconductor radio frequency switch (D1, D4, D6).
2 Assignments
0 Petitions
Accused Products
Abstract
A transmitting-receiving switch-over circuit arrangement for a transceiver includes a transmitter terminal (TX) and a receiver terminal (RX) connected by respective transmitting and receiving circuit sections to a circuit junction point (P) that is coupled to an antenna terminal (ANT). A controllable semiconductor switch (D1, D4, D6) is connected to the transmitting circuit section. A further controllable semiconductor switch (D2, D3, D5, D7) is connected to the receiving circuit section. Control signals are applied to the semiconductor switches so that at least the semiconductor switch connected to the receiving circuit section is controllable independently to assume any one of three stages, namely: fully passing the received RF-signal, fully blocking the received RF-signal, and attenuating the received RF-signal.
135 Citations
13 Claims
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1. A transmitting-receiving switch over circuit arrangement comprising:
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(a) a circuit junction point (P), (b) a transmitter output (TX) for providing a radio frequency transmitter output signal, (c) a transmitting first circuit section connecting said transmitter output (TX) to said circuit junction point (P) for transmitting said radio frequency transmitter output signal to said circuit junction point (P), (d) an antenna output terminal (ANT) coupled to said circuit junction point (P) for transmitting said radio frequency transmitter output signal or for receiving a radio frequency receiver input signal, (e) a receiver input terminal (RX) for receiving said radio frequency receiver input signal, (f) a receiving second circuit section connecting said receiver input terminal (RX) to said circuit junction point (P) for feeding said radio frequency receiver input signal to said receiver input terminal (RX), (g) a controllable first semiconductor radio frequency switch (D1, D4, D6) connected to said transmitting circuit section, (h) a first control input (VC1) connected to said first semiconductor radio frequency switch (D1, D4, D6) for supplying a first control signal to said first semiconductor radio frequency switch (D1, D4, D6) to close or open said first semiconductor frequency switch (D1, D4, D6), (i) a controllable second semiconductor radio frequency switch (D2, D3, D5, D7) connected to said receiving circuit section, and (j) a second control input (VC2) connected to said second semiconductor radio frequency switch (D2, D3, D5, D7) for supplying a second control signal to said second semiconductor radio frequency switch (D2, D3, D5, D7) for controlling said second semiconductor radio frequency switch to assume any one of three stages;
open for blocking said receiver input signal, closed for passing said receiver input signal, and attenuated for damping said receiver input signal, whereby at least said second controllable semiconductor radio frequency switch (D2, D3, D5, D7) is controllable independently of any control of said first semiconductor radio frequency switch (D1, D4, D6). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification