KR20070013689A - One-body low noise amplifier and receiver of time division duplex system using thesame - Google Patents

Abstract

An one-body low noise amplifier and a receiver of a time division duplex communication system using the same are provided to prevent an interference signal from being intermixed with a circulating unit by enabling the circulating unit to have a high isolation property in case of a transmitting mode. In an one-body low noise amplifier(100), a first coupling unit(110) detects a signal, inputted from the outside, diverges the signal. A path control unit(110) controls a receiving path of the signal, diverged by the first coupling unit(110). A receipt amplifying unit(185) amplifies the signal transferred to the receiving path by the path control unit(110). A second coupling unit(195) detects a signal outputted from the receipt amplifying unit(185), and couples the signal.

Description

 Integrated low noise amplifier and receiving device of time division duplex communication system {ONE-BODY LOW NOISE AMPLIFIER AND RECEIVER OF TIME DIVISION DUPLEX SYSTEM USING THESAME}

1 is a configuration diagram of a receiver of a conventional time division duplex communication system;

2 is a block diagram of an integrated low noise amplifier according to a first embodiment of the present invention.

3 is a block diagram of a receiving apparatus of a time division duplex communication system according to a second embodiment of the present invention.

4 is a block diagram of a receiving apparatus of a time division duplex communication system according to a third embodiment of the present invention.

* Description of the main drawing codes *

10, 230, 330: transmitting and receiving antenna 20: circulator

30: low noise amplifier 40: bandpass filter

50: divider 60, 210: transmission signal

100: integrated low noise amplifier 110, 360: first coupling portion

120, 370: input unit 130, 380: output unit

140, 390: branch 150, 400: isolation

160, 410: resistors 165, 335: path control unit

170, 340: switch unit 180, 345: switch control unit

185, 420: reception amplifier 190, 425: amplification element

195, 430: second coupling portion 200, 300: receiving device

220: circulation portion 350: terminal portion

A first coupling unit for detecting and branching a signal input from the outside, a path control unit controlling a reception path of a signal branched from the first coupling unit, and a reception amplifying a signal transmitted to a reception path by the path control unit A low noise amplifier comprising an amplification unit and a second coupling unit for detecting and coupling a signal output from the reception amplification unit.

The integrated low noise amplifier may further include a circulation unit configured to pass a received signal of the integrated low noise amplifier and a transmission signal of a time division duplex communication system using only one path, and a transmission / reception antenna configured to transmit and receive signals output from the circulation unit. A receiving device of a time division duplex communication system.

On the other hand, a transmission and reception antenna for transmitting and receiving signals, a circulation unit for passing a signal from the transmission and reception antenna in only one path, a path control unit for controlling the reception path of the signal passed by the circulation unit, and the path control unit A termination unit for matching and terminating the signal transmitted to the reception path by the first path, a first coupling unit for detecting and branching a signal transmitted to the reception path by the path control unit, and amplifying the signal branched from the first coupling unit And a second combiner configured to detect and combine a signal output from the receive amplifier.

1 is a block diagram of a receiver of a conventional time division duplex communication system.

As shown in FIG. 1, a conventional receiver includes a transmit / receive antenna 10 that transmits and receives a receive and transmit signal 60, and a signal from the transmit / receive antenna 10 according to a transmit and receive mode of a time division duplex communication system. A circulator 20 which passes only one path to a transmission path or a reception path, a low noise amplifier 30 for amplifying and outputting a received signal output from the circulator 20 with low noise, and the low noise amplifier 30 Band pass filter 40 for band-limited by the signal output from the pass band to the signal in the band, and the divider 50 for distributing the signal passed in the band pass filter 50.

The reception signal applied from the transmission / reception antenna 10 in the reception mode outputs the reception signal to the low noise amplifier 30 to which the circulator 20 is connected. The low noise amplifier 30 amplifies a received signal and outputs the amplified signal to the band pass filter 40. Accordingly, the band pass filter 40 band-limits the signals in the pass band and passes them through to the divider 50, and the divider 50 distributes the received signal.

In addition, the transmission signal 60 in the transmission mode is output by the circulator 20 to the transmission and reception signal 60 to the transmission and reception antenna 10 in the transmission path to the air. At this time, the interference signal is mixed into the reception path due to the deterioration of the isolation characteristic of the circulator 20, resulting in a problem of impedance mismatch.

The present invention has been made to solve the above problems, a first coupling unit for detecting and branching a signal input from the outside, a path control unit for controlling the reception path of the signal branched from the first coupling unit, and the path A low noise amplification unit comprising a reception amplifier unit for amplifying the signal transmitted to the reception path by the control unit and a second coupling unit for detecting and combining the signal output from the reception amplifier unit is integrated into an input unit from the outside to the input unit of the first coupling unit. The output signal is output through the output unit, and detects and diverges a part of the power signal of the signal input from the branch unit, and matches and isolates the partial power signal by a resistor connected to the isolation unit, thereby interfering with the interference signal at the input unit. To provide an integrated low noise amplifier that matches the impedance mismatch Never.

In addition, the receiving apparatus of the time division duplex communication system further includes a circulation unit for passing the received signal of the integrated low noise amplifier and the transmission signal of the time division duplex system in only one path, and a transmission and reception antenna for transmitting and receiving signals output from the circulation unit. The purpose is to provide excellent isolation characteristics of the circulation unit.

On the other hand, the transmission and reception antenna for transmitting and receiving signals, the circulation unit for passing the signal from the transmission and reception antenna in only one path, the path control unit for controlling the reception path of the signal passed by the circulation unit, and the path control unit A termination unit for matching and terminating the signal transmitted to the reception path by the first path, a first coupling unit for detecting and branching a signal transmitted to the reception path by the path control unit, and amplifying a signal branched from the first coupling unit The reception apparatus of the time division duplex communication system comprising a reception amplifier and a second coupling unit which detects and combines the signal output from the reception amplification unit, when the transmission mode of the time division duplex communication system is in the transmission mode, the transmission and reception antenna The switch unit of the path control unit is connected to one terminal of the switch unit so as to be output to the The switching to the terminating resistor portion isolated addition the excellent cycle characteristic even in providing it is an object.

A first embodiment of the present invention for achieving the above object is a first coupling unit for detecting and branching a signal input from the outside, a path control unit for controlling the reception path of the signal branched from the first coupling unit, and A reception amplification unit for amplifying the signal transmitted to the reception path by the path control unit and a second coupling unit for detecting and combining the signal output from the reception amplification unit is characterized in that the integral.

According to a feature of the first embodiment of the present invention, the first and second coupler is an input and an output unit to which a signal is input and output, and a branching unit and the partial unit for detecting and branching some power signals of the input signal. Characterized in that the isolation portion is matched and isolated by a resistance to the power signal.

According to a feature of the first embodiment of the present invention, the path control unit is configured in parallel so that a signal is transmitted to one path, and the switch unit is configured to switch and the switch control unit for controlling the switch unit.

According to a feature of the first embodiment of the present invention, the receiving amplifier is characterized in that the amplification elements for amplifying the signal transmitted to the receiving path in parallel.

According to a second embodiment of the present invention, a first coupling unit for detecting and branching a signal input from the outside, a path control unit controlling a reception path of a signal branched from the first coupling unit, and a reception path by the path control unit An integrated low noise amplifier comprising a receive amplifier for amplifying a signal transmitted to the second amplifier and a second combiner for detecting and combining a signal output from the receive amplifier, wherein the received signal of the low noise amplifier and the transmit signal of a time division duplex communication system are combined. And a transmitting and receiving antenna for transmitting and receiving a signal output from the circulation unit.

A third embodiment of the present invention provides a transmission and reception antenna for transmitting and receiving signals, a circulation unit for passing a signal from the transmission and reception antenna in only one path, and a path control unit for controlling a reception path of the signal passed by the circulation unit. And a termination unit for matching and terminating the signal transmitted to the reception path by the path control unit with a resistance, a first coupling unit for detecting and branching the signal transmitted to the reception path by the path control unit, and the first connection unit. And a second combiner configured to detect and combine a signal output from the receive amplified unit, amplifying the branched signal from the combiner.

According to a third aspect of the present invention, the path controller is characterized in that it comprises a switch unit for switching the signal is transmitted to any one path and the switch control unit for controlling the switch unit.

According to a feature according to a third embodiment of the present invention, the first and second couplers include an input and an output unit to which a signal is input and output, and a coupler and a portion to detect and branch some power signals of the input signal. Characterized in that the isolation portion is matched and isolated by a resistance to the power signal.

According to a feature of a third embodiment of the present invention, the receiving amplifier is characterized in that the amplification elements for amplifying the signal transmitted to the receiving path in parallel.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a block diagram of an integrated low noise amplifier according to a first embodiment of the present invention.

As shown in FIG. 2, the integrated low noise amplifier 100 of the present invention includes a first combiner 110, a path controller 165, a receive amplifier 185, and a second combiner 195. The path control unit includes a switch unit 170 and a switch control unit 180.

The first coupling unit 110 is composed of a hybrid coupler (hybrid coupler) is a signal input to the input unit 120 from the outside is output through the output unit 130, the partial power of the signal input from the branch unit 140 By detecting and branching the signal and matching and isolating the partial power signal with a resistor 160 connected to the isolation unit 150, an impedance mismatch generated by interfering an interference signal in the input unit 120 is prevented.

The path control unit 165 switches or blocks the switch unit 170 in parallel so that the signal branched from the first coupling unit 110 by the switch control unit 180 is transmitted to each receiving path. . The switch controller 180 controls the switch unit 170 to be switched or blocked.

The reception amplifier 185 amplifies the signal transmitted by switching the switch 170 is amplified by a low noise element 190 is configured in parallel in each receiving path.

The second coupling unit 195 is composed of a hybrid coupler (hybrid coupler) and amplified by the reception amplifier 185 combines the signals output through the respective reception paths through the output unit 130 and the branch unit 140 And outputs to the input unit 120. In addition, the resistor 160 connected to the isolation unit 150 matches and isolates the signal of the output unit 130.

3 is a block diagram of a receiving apparatus of a time division duplex communication system according to a second embodiment of the present invention.

As shown in FIG. 3, the receiving device 200 of the time division duplex communication system includes a transmitting and receiving antenna 230 for transmitting and receiving signals, and a circulator for passing a signal from the transmitting and receiving antenna 230 through only one path. The integrated low noise amplifier 100 is included to amplify the signal passed by the 220 and the circulation unit 220.

Since the circuit 220 is configured as a circulator and the signal input to the first port is output only to the second port, in the transmission mode of the time division duplex communication system, the transmission signal 210 is output only to the transmission / reception antenna 230. The switch unit 170 of the path control unit 165 is configured in parallel to the receiving path and is blocked by the switch control unit 180. Since the signal input to the second port is output only to the third port, the received signal from the transmit / receive antenna 230 is input only to the first combiner 110 in the receive mode. The signal input to the input unit 120 of the first coupling unit 110 is detected by the power signal of the signal output through the output unit 130 and the signal input from the branch unit 140 and branched to each receiving path Is output to the receiving amplifier 185 configured in parallel to the resistor 160 connected to the isolation unit 150 to match and isolate the partial power signal.

On the other hand, in the transmission mode, the switch unit 170 of the path control unit 165 configured in parallel to the reception path is cut off, and the circulation unit 220 is excellently isolated by the first coupling unit 110. By having the characteristic of the figure, the interference signal is prevented from being mixed in the circulation unit 220.

The switch unit 170, in which the signals output from the output unit 130 and the branch unit 140 of the first coupling unit 110 are configured in parallel in the respective reception paths and are switched by the switch control unit 180. The signal is input to the reception amplifier 185 through the signal, and the signal input to the reception amplifier 185 is amplified with low noise by an amplification element 190 configured in parallel in each reception path to the second coupling unit 195. The output unit 130 and the branch unit 140 are combined and output. In addition, the resistor 160 connected to the isolation unit 150 matches and isolates the signal of the output unit 130.

4 is a block diagram of a receiving apparatus of a time division duplex communication system according to a third embodiment of the present invention.

As shown in FIG. 4, in the transmission mode of the time division duplex communication system, the transmission signal 310 is output only to the transmission / reception antenna 330 by the circulation unit 320, and in the reception mode, the transmission / reception antenna 330. Received by the signal is received by the circulation unit 320 by only one path is input to the switch unit 340 of the path control unit 335, one end of the switch unit 340 is made of a line Termination portion 350 for matching and terminating the connection is connected, and the first coupling portion 360 for detecting and branching the received signal is connected to the other terminal.

In this case, when the switch unit 340 of the path controller 335 is in the reception mode, the received signal is transferred to the first coupling unit 360 and the signal output from the input unit 370 through the output unit 380. Some power signals of the signal input from the branching unit 390 are detected and branched to be amplified with low noise by the amplifying element 425 of the receiving amplifying unit 420 configured in parallel in each of the receiving paths. The signal amplified by 420 is combined through the output unit 380 and the branch unit 390 of the second coupling unit 430 and output to the input unit 370. In addition, the resistor 410 connected to the isolation unit 400 matches and isolates the signal of the output unit 380.

When the switch unit 340 of the path control unit 335 is in the transmission mode, the switch unit may output the transmission signal 310 of the time division duplex communication system to the transmission / reception antenna 330 through the circulation unit 320. By switching to the resistance of the end portion 350 connected to one terminal of the 340, the circulation part 320 has excellent isolation characteristics, thereby preventing the interference signal from entering the circulation part 320.

The signal input to the input unit of the first coupling unit from the integrated exterior of the present invention made as described above is output through the output unit, and detects and diverges some power signals of the signal input from the branch unit, and some power signals of the input unit. By matching and isolating by the resistor connected to the isolator, it is possible to prevent the impedance mismatch caused by the interference signal is mixed in the input unit.

In addition, the receiving apparatus of the time division duplex communication system further includes a circulation unit for passing the received signal of the integrated low-noise amplifier and the transmission signal of the time division duplex communication system in only one path, and a transmission and reception antenna for transmitting and receiving signals output from the circulation unit. In the transmission mode, since the circulation section has excellent isolation characteristics, it is possible to prevent the interference signal from entering the circulation section.

On the other hand, the transmission and reception antenna for transmitting and receiving signals, the circulation unit for passing the signal from the transmission and reception antenna in only one path, the path control unit for controlling the reception path of the signal passed by the circulation unit, and the path control unit A termination unit for matching and terminating the signal transmitted to the reception path by the first path, a first coupling unit for detecting and branching a signal transmitted to the reception path by the path control unit, and amplifying a signal branched from the first coupling unit The reception apparatus of the time division duplex communication system comprising a reception amplifier and a second coupling unit which detects and combines the signal output from the reception amplification unit, when the transmission mode of the time division duplex communication system is in the transmission mode, the transmission and reception antenna The switch unit of the path control unit is connected to one terminal of the switch unit so as to be output to the The switching to the terminating resistor portion isolated addition the excellent cycle also has the characteristic doemeurosseo, it is possible to prevent the interference signal mixed in the circulation unit.

Claims (9)

A first coupling part for detecting and branching a signal input from the outside; A path control unit controlling a reception path of a signal branched from the first coupling unit; A reception amplifier which amplifies a signal transmitted to the reception path by the path controller; And Integrated low noise amplifier, characterized in that the second coupling portion for detecting and combining the signal output from the reception amplifier unit is integral. 2. The apparatus of claim 1, wherein the first and second combiners comprise an input and an output unit for inputting and outputting a signal; A branching unit for detecting and branching some power signals of the input signal; And And an isolation unit for matching and isolating the partial power signal by a resistor. The integrated low noise amplifier of claim 1, wherein the path controller comprises a switch unit configured to be switched in parallel so that a signal is transmitted to one path, and a switch controller configured to control the switch unit to be switched. The integrated low noise amplifier of claim 1, wherein the reception amplifier comprises parallel amplification elements for amplifying a signal transmitted to the reception path. A first coupling unit for detecting and branching a signal input from the outside, a path control unit controlling a reception path of a signal branched from the first coupling unit, and a reception amplifying a signal transmitted to a reception path by the path control unit An integrated low noise amplifier comprising an amplifier and a second combiner configured to detect and combine a signal output from the received amplifier. A circulation unit for passing the received signal of the integrated low noise amplifier and the transmitted signal of a time division duplex communication system through only one path; And And a transmission / reception antenna for transmitting and receiving a signal output from the circulation unit. A transmission and reception antenna for transmitting and receiving a transmission and reception signal; A circulation unit for passing the signal from the transmit / receive antenna in only one path; A path control unit controlling a reception path of a signal passed by the circulation unit; A termination unit matching and terminating a signal transmitted to the reception path by the path control unit with a resistance; A first coupling unit for detecting and branching a signal transmitted to a reception path by the path controller; A reception amplifier configured to amplify the signal branched from the first combiner; And And a second combiner configured to detect and combine the signal output from the receive amplifier. 7. The apparatus of claim 6, wherein the path control unit comprises a switch unit for switching a signal to be transmitted in one path and a switch control unit for controlling the switch unit to be switched. 7. The apparatus of claim 6, wherein the first and second combiners comprise an input and an output unit for inputting and outputting signals; A coupler configured to detect and branch some power signals of the input signal; And And an isolation unit for matching and isolating the partial power signal by a resistor. The receiving apparatus of claim 6, wherein the receiving amplifier comprises parallel amplifying elements for amplifying a signal transmitted to the receiving path.

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