JPH06350478A - Communications equipment - Google Patents
Communications equipmentInfo
- Publication number
- JPH06350478A JPH06350478A JP5290992A JP29099293A JPH06350478A JP H06350478 A JPH06350478 A JP H06350478A JP 5290992 A JP5290992 A JP 5290992A JP 29099293 A JP29099293 A JP 29099293A JP H06350478 A JPH06350478 A JP H06350478A
- Authority
- JP
- Japan
- Prior art keywords
- transmission
- switch
- signal
- reception
- mixer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Mobile Radio Communication Systems (AREA)
- Transceivers (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は移動体通信に適した通信
装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication device suitable for mobile communication.
【０００２】[0002]
【従来の技術】図６は従来のピンポン伝送方式の通信装
置のＲＦ部の構成を示すブロック図である。アンテナ１
で受信されたＲＦ信号は送受信を切り換えるスイッチ４
を介して受信信号増幅器２１、２２へ入力され、ここで
増幅されて受信用ミキサ１１へ入力される。９は局部発
振器であり、発振回路９１及びフェーズロックループ回
路（以下ＰＬＬ回路と略す）９２からなる。この局部発
振器９から出力される局部発振信号はバッファアンプ８
１を介してミキサ１１へ入力され、アンテナ１から入力
されてきたＲＦ信号と周波数混合されてＩＦ（中間周波
数）信号に変換され後段の受信系回路へ与えられる。2. Description of the Related Art FIG. 6 is a block diagram showing a configuration of an RF unit of a conventional ping-pong transmission type communication device. Antenna 1
The RF signal received by the switch 4 switches between transmission and reception.
The signal is input to the reception signal amplifiers 21 and 22 via, and is amplified here and input to the reception mixer 11. Reference numeral 9 denotes a local oscillator, which includes an oscillation circuit 91 and a phase lock loop circuit (hereinafter abbreviated as PLL circuit) 92. The local oscillation signal output from the local oscillator 9 is the buffer amplifier 8
The signal is input to the mixer 11 via 1 and mixed with the frequency of the RF signal input from the antenna 1 to be converted into an IF (intermediate frequency) signal, which is applied to the receiving system circuit in the subsequent stage.
【０００３】一方、送信系についてみるとＩＦの送信信
号は送信ミキサ１２へ入力され、また局部発振器９の出
力がバッファアンプ８２を介してミキサ１２へ入力さ
れ、ここでＲＦ信号に変換され、次いで送信信号増幅器
３１、３２で増幅されてスイッチ４を介してアンテナ１
から送信されるようになっている。On the other hand, regarding the transmission system, the transmission signal of the IF is input to the transmission mixer 12, and the output of the local oscillator 9 is also input to the mixer 12 via the buffer amplifier 82, where it is converted into an RF signal and then. The antenna 1 is amplified by the transmission signal amplifiers 31 and 32 and is transmitted via the switch 4.
It is supposed to be sent from.
【０００４】[0004]
【発明が解決しようとする課題】このような通信装置で
は消費電力低減のために送信時及び受信時の夫々に必要
な部分だけに給電されるようにしてある。即ち、受信時
には送信信号増幅器３１、３２、送信ミキサ１２、及び
バッファアンプ８２へは給電されず、逆に送信時には受
信信号増幅器２１、２２、受信ミキサ１１、及びバッフ
ァアンプ８１へは給電されない。In such a communication device, in order to reduce power consumption, power is supplied only to necessary portions during transmission and during reception. That is, the transmission signal amplifiers 31, 32, the transmission mixer 12, and the buffer amplifier 82 are not supplied with power during reception, and conversely, the reception signal amplifiers 21, 22, the reception mixer 11, and the buffer amplifier 81 are not supplied with power during transmission.
【０００５】従って局部発振器９の負荷が送受信の切換
の都度変動し、またＰＬＬ回路９２はその安定に若干の
時間を要するから、局部発振器９の周波数が送受信の切
換直後には安定しないという問題があった。これを避け
るために送受信部とも常時給電することとすれば電池の
消耗が大きい。Therefore, the load of the local oscillator 9 changes each time transmission / reception is switched, and the PLL circuit 92 requires some time to stabilize, so that the frequency of the local oscillator 9 is not stable immediately after switching between transmission and reception. there were. In order to avoid this, if the power is constantly supplied to both the transmitter and the receiver, the battery will be greatly consumed.
【０００６】本発明は斯る問題点に鑑みて成されたもの
であり、局部発振器周波数の安定化と節電とを両立させ
得る通信装置を提供することを課題とする。The present invention has been made in view of the above problems, and an object of the present invention is to provide a communication device capable of achieving both stabilization of the local oscillator frequency and power saving.
【０００７】[0007]
【課題を解決するための手段】本発明の通信装置は、送
信信号増幅器と、受信信号増幅器と、局部発振信号と送
信信号又は受信信号とを周波数混合する一つのミキサを
備え、該ミキサと前記送信信号増幅器、及び前記ミキサ
と前記受信信号増幅器とは夫々信号経路切換のスイッチ
を介して接続されていることを特徴とする。A communication device of the present invention comprises a transmission signal amplifier, a reception signal amplifier, and one mixer for frequency-mixing a local oscillation signal and a transmission signal or a reception signal. The transmission signal amplifier, and the mixer and the reception signal amplifier are respectively connected via a switch for switching a signal path.
【０００８】また、本発明の通信装置は、受信信号又は
送信信号を増幅する送受信兼用の増幅器と、局部発振出
力と前記送信信号又は前記受信信号とを周波数混合する
一つのミキサを備え、該ミキサと前記増幅器の入力側、
及び前記ミキサと前記増幅器の出力側とは夫々信号経路
切換のスイッチを介して接続されていることを特徴とす
る。Further, the communication device of the present invention comprises an amplifier for both transmission and reception for amplifying a reception signal or a transmission signal, and one mixer for frequency mixing the local oscillation output with the transmission signal or the reception signal. And the input side of the amplifier,
Further, the mixer and the output side of the amplifier are connected to each other via a switch for switching a signal path.
【０００９】[0009]
【作用】本発明の通信装置の構成によれば、ミキサと送
信信号増幅器、及び前記ミキサと受信信号増幅器との間
に夫々設けられた信号経路切換のスイッチのみを送信、
受信の別に応じて切り換え、前記ミキサは送受信に共用
すべく常時給電しているので、これにより局部発振器負
荷は送受信時とも変動が極めて小さくなる。According to the configuration of the communication device of the present invention, only the mixer and the transmission signal amplifier, and the signal path switching switches provided between the mixer and the reception signal amplifier are transmitted,
Since the mixer is switched depending on whether it is received or not, and the mixer constantly supplies electric power so as to be shared for transmission and reception, the fluctuation of the local oscillator load during transmission and reception becomes extremely small.
【００１０】また、別個に設けた送信及び受信の増幅器
に代えて送受信兼用の増幅器を用いた構成にし、この増
幅器は送受信に共用すべく常時給電しているので、送受
信の切り換えの際に発生していた負荷変動はより小さく
なる。In addition, instead of the separately provided transmission and reception amplifiers, a transmission / reception amplifier is used, and since this amplifier is constantly supplying power so as to be shared for transmission and reception, this occurs when switching between transmission and reception. The load fluctuations that were present are smaller.
【００１１】[0011]
【実施例】本発明の一実施例を図面を参照しつつ詳細に
説明する。図１は本発明の一実施例に係る通信装置のＲ
Ｆ部のブロック図である。アンテナ１で受信されたＲＦ
信号は送受信を切り換えるスイッチ４を介して受信信号
増幅器２１、２２へ入力され、ここで増幅されてスイッ
チ６の切換側端子６ａに与えられる。スイッチ６のコモ
ン端子６ｃは受信、送信兼用のミキサ１０へ入力され
る。９は局部発振器であり、発振回路９１及びＰＬＬ回
路９２からなり、その出力はバッファアンプ８及び整合
回路１３を介してミキサ１０へ入力され、アンテナ１か
ら入力されてきたＲＦ信号がＩＦ信号に変換されてスイ
ッチ７のコモン端子７ｃに与えられる。スイッチ７の切
換側端子７ｂは後段の受信系回路に接続されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 shows an R of a communication device according to an embodiment of the present invention.
It is a block diagram of F section. RF received by antenna 1
The signal is input to the reception signal amplifiers 21 and 22 via the switch 4 for switching between transmission and reception, where it is amplified and given to the switching side terminal 6a of the switch 6. The common terminal 6c of the switch 6 is input to the mixer 10 for both reception and transmission. Reference numeral 9 denotes a local oscillator, which includes an oscillation circuit 91 and a PLL circuit 92, the output of which is input to the mixer 10 via the buffer amplifier 8 and the matching circuit 13, and the RF signal input from the antenna 1 is converted into an IF signal. It is supplied to the common terminal 7c of the switch 7. The switching side terminal 7b of the switch 7 is connected to the receiving system circuit in the subsequent stage.
【００１２】一方、送信系についてみるとＩＦの送信信
号はスイッチ６の切換側端子６ｂに与えられ、スイッチ
６のコモン端子６ｃを経てミキサ１０へ入力され、また
局部発振器９出力がバッファアンプ８及び整合回路１３
を介してミキサ１０へ入力され、ここでＲＦ信号に変換
され、スイッチ７のコモン端子７ｃ、切換側端子７ａを
経た後、送信信号増幅器３１、３２で増幅されてスイッ
チ４を介してアンテナ１から送信されるようになってい
る。On the other hand, regarding the transmission system, the transmission signal of the IF is given to the switching side terminal 6b of the switch 6, is input to the mixer 10 via the common terminal 6c of the switch 6, and the output of the local oscillator 9 is the buffer amplifier 8 and. Matching circuit 13
Via the common terminal 7c of the switch 7 and the switching side terminal 7a, and then amplified by the transmission signal amplifiers 31 and 32 to be transmitted from the antenna 1 via the switch 4. It will be sent.
【００１３】以上の説明から明らかなように図１のスイ
ッチ６、７は受信時の状態を示している。図２はスイッ
チ６を切換側端子６ｂに、またスイッチ７を切換側端子
７ａ側とした送信状態を示している。図３は図１、２の
回路をより具体的に示している。ミキサ１０としてはデ
ュアルゲートＦＥＴ１０ａを用いている。またスイッチ
６、７は夫々２つのＦＥＴを直列接続してなり、各ゲー
トに相補信号を与えるようにしたものを用いている。As is clear from the above description, the switches 6 and 7 of FIG. 1 show the state at the time of reception. FIG. 2 shows a transmission state in which the switch 6 is on the switching side terminal 6b and the switch 7 is on the switching side terminal 7a side. FIG. 3 shows the circuit of FIGS. 1 and 2 more specifically. A dual gate FET 10a is used as the mixer 10. The switches 6 and 7 are each composed of two FETs connected in series so that complementary signals are given to the respective gates.
【００１４】ＲＦ入力整合回路１４は増幅器２２とスイ
ッチ６との間に介装されるもの、ＩＦ出力整合回路１７
はスイッチ７と後段の受信系回路との間に介装されるも
の、ＩＦ出力整合回路１６はスイッチ６と送信系回路と
の間に介装されるもの、ＲＦ出力整合回路１５は増幅器
３１とスイッチ７との間に介装されるものであり、図
１、２では図示を省略している。The RF input matching circuit 14 is interposed between the amplifier 22 and the switch 6, and the IF output matching circuit 17 is provided.
Is provided between the switch 7 and the receiving system circuit in the subsequent stage, the IF output matching circuit 16 is provided between the switch 6 and the transmitting system circuit, and the RF output matching circuit 15 is provided with the amplifier 31. It is interposed between the switch 7 and the switch 7 and is not shown in FIGS.
【００１５】これらの整合回路１４〜１７及び前述の整
合回路１３はいずれもインピーダンスマッチング用のも
のである。受信信号増幅器２２出力を入力とするＲＦ入
力整合回路１４はスイッチ６を構成するＦＥＴ６１を介
してＦＥＴ１０ａの第１ゲートと接続されている。送信
系回路からの送信信号を入力とするＩＦ出力整合回路１
６はスイッチ６を構成するもう一つのＦＥＴ６２を介し
て同様にＦＥＴ１０ａの第１ゲートに接続されている。The matching circuits 14 to 17 and the matching circuit 13 described above are all for impedance matching. The RF input matching circuit 14 that receives the output of the reception signal amplifier 22 is connected to the first gate of the FET 10a via the FET 61 that constitutes the switch 6. IF output matching circuit 1 that receives the transmission signal from the transmission circuit
Similarly, 6 is connected to the first gate of the FET 10a via another FET 62 which constitutes the switch 6.
【００１６】ＦＥＴ１０ａの第２ゲートは局部発振器９
出力を入力すべく整合回路１３に接続されている。ＦＥ
Ｔ１０ａのドレインはスイッチ７を構成するＦＥＴ７
１、７２のソースに各接続され、それらのドレインはＲ
Ｆ出力整合回路１５、ＩＦ出力整合回路１７に夫々接続
されている。ＦＥＴ１０ａのソースは接地してある。The second gate of the FET 10a is the local oscillator 9
It is connected to the matching circuit 13 to input the output. FE
The drain of T10a is the FET7 that constitutes the switch 7.
1,72 connected to each source, and their drains are R
They are connected to the F output matching circuit 15 and the IF output matching circuit 17, respectively. The source of the FET 10a is grounded.
【００１７】ＦＥＴ６２、７１のゲートにはスイッチ制
御信号Ｖｇが、またＦＥＴ６１、７２のゲートにはその
相補信号Ｖｇａが与えられる。受信時にはＶｇａ＝−３
Ｖ、Ｖｇ＝０ＶとしてＦＥＴ６１、７２をオンすること
でスイッチ６、７は図１の状態になる。そしてＦＥＴ１
０ａでは受信信号と局部発振器９の出力とがミキシング
されることになる。一方送信時にはＶｇ＝−３Ｖ、Ｖｇ
ａ＝０ＶとしてＦＥＴ６２、７１をオンすることでスイ
ッチ６、７は図２の状態になる。そしてＦＥＴ１０ａで
は送信信号と局部発振器９の出力とがミキシングされる
ことになる。A switch control signal Vg is applied to the gates of the FETs 62 and 71, and a complementary signal Vga thereof is applied to the gates of the FETs 61 and 72. Vga = -3 during reception
By turning on the FETs 61 and 72 with V and Vg = 0V, the switches 6 and 7 are brought into the state shown in FIG. And FET1
At 0a, the received signal and the output of the local oscillator 9 are mixed. On the other hand, during transmission, Vg = -3V, Vg
When a = 0V and the FETs 62 and 71 are turned on, the switches 6 and 7 are brought into the state shown in FIG. Then, in the FET 10a, the transmission signal and the output of the local oscillator 9 are mixed.
【００１８】以上のような動作においては送受信時の切
換で行うのはスイッチ４、６、７の切換のみである。従
って送信時、受信時での負荷変動は極めて小さく、局部
発振器の出力周波数が安定化される。またミキサ１０は
送受信を兼ねているから従来と同様の電力消費しか起こ
らないので、節電を行いながら局部発振周波数の安定化
を図ることができる。In the above-mentioned operation, the switching at the time of transmission / reception is performed only by switching the switches 4, 6, 7. Therefore, load fluctuations during transmission and reception are extremely small, and the output frequency of the local oscillator is stabilized. Further, since the mixer 10 also serves as transmission and reception, it consumes only the same power as the conventional one, so that the local oscillation frequency can be stabilized while saving power.
【００１９】次に、本発明の他の実施例を説明する。図
４、図５は本発明の他の実施例に係る通信装置のＲＦ部
のブロック図である。図１と対応する部分には同一の記
号を付し、その説明は省略する。Next, another embodiment of the present invention will be described. 4 and 5 are block diagrams of the RF unit of the communication device according to another embodiment of the present invention. The parts corresponding to those in FIG. 1 are designated by the same reference numerals, and the description thereof will be omitted.
【００２０】アンテナ１で受信されたＲＦ信号は送受信
を切り換えるスイッチ４を介して増幅器４１、４２へ入
力され、ここで増幅されてスイッチ６の切換側端子６ａ
に与えられる。スイッチ６のコモン端子６ｃはミキサ１
０へ入力される。局部発振器９の出力はバッファアンプ
８及び整合回路１３を介してミキサ１０へ入力され、ア
ンテナ１から入力されてきたＲＦ信号がＩＦ信号に変換
されてスイッチ７のコモン端子７ｃに与えられる。スイ
ッチ７の切換側端子７ｂは後段の受信系回路に接続され
ている。The RF signal received by the antenna 1 is input to the amplifiers 41 and 42 via the switch 4 for switching between transmission and reception, where it is amplified and is switched side terminal 6a of the switch 6.
Given to. The common terminal 6c of the switch 6 is the mixer 1
Input to 0. The output of the local oscillator 9 is input to the mixer 10 via the buffer amplifier 8 and the matching circuit 13, and the RF signal input from the antenna 1 is converted into an IF signal and given to the common terminal 7c of the switch 7. The switching side terminal 7b of the switch 7 is connected to the receiving system circuit in the subsequent stage.
【００２１】一方、送信系についてみるとＩＦの送信信
号はスイッチ６の切換側端子６ｂに与えられ、スイッチ
６のコモン端子６ｃを経てミキサ１０へ入力され、また
局部発振器９出力がバッファアンプ８及び整合回路１３
を介してミキサ１０へ入力され、ここでＲＦ信号に変換
された後、スイッチ７のコモン端子７ｃ及び切換側端子
７ａを経た後、受信時にも使用した増幅器４１、４２で
増幅されてスイッチ４を介してアンテナ１から送信され
るようになっている。On the other hand, regarding the transmission system, the IF transmission signal is given to the switching side terminal 6b of the switch 6, is input to the mixer 10 via the common terminal 6c of the switch 6, and the output of the local oscillator 9 is the buffer amplifier 8 and. Matching circuit 13
Via the common terminal 7c and the switch side terminal 7a of the switch 7 and then amplified by the amplifiers 41 and 42 used at the time of reception to switch the switch 4 to the RF signal. The signal is transmitted from the antenna 1 via the antenna.
【００２２】以上の説明から明らかなように図４のスイ
ッチ６、７は受信時の状態を示している。図５はスイッ
チ６を切換側端子６ｂに、またスイッチ７を切換側端子
７ａ側とした送信状態を示している。As is clear from the above description, the switches 6 and 7 in FIG. 4 show the state during reception. FIG. 5 shows a transmission state in which the switch 6 is on the switching side terminal 6b and the switch 7 is on the switching side terminal 7a side.
【００２３】上述した本発明の他の実施例の通信装置
は、先の実施例と同様にスイッチ６、７及び送受信兼用
のミキサ１０を設けたことに加え、常時給電された増幅
器４１、４２も送受信兼用にできるように構成したの
で、送信時及び受信時での局部発振器９に対する負荷変
動はより小さくなり、局部発振器９から出力される局部
発振信号の周波数がより安定化される。In the communication device of another embodiment of the present invention described above, switches 6 and 7 and a mixer 10 for both transmission and reception are provided as in the previous embodiment, and also amplifiers 41 and 42 which are constantly supplied with power. Since it is configured to be capable of both transmission and reception, load fluctuation on the local oscillator 9 during transmission and reception is further reduced, and the frequency of the local oscillation signal output from the local oscillator 9 is further stabilized.
【００２４】[0024]
【発明の効果】本発明の通信装置の構成によれば、ミキ
サと送信信号増幅器、及び前記ミキサと受信信号増幅器
との間に夫々設けられた信号経路切換のスイッチのみを
送信、受信の別に応じて切り換え、前記ミキサは送受信
に共用すべく常時給電しているので、これにより局部発
振器対する負荷は送受信時とも変動が極めて小さくな
り、局部発振器から出力される信号の周波数の安定化が
図れる。According to the configuration of the communication apparatus of the present invention, only the mixer and the transmission signal amplifier, and the signal path switching switches provided between the mixer and the reception signal amplifier are separately transmitted and received. The mixer constantly feeds power so that it can be used for both transmission and reception, so that the load on the local oscillator is extremely small during transmission and reception, and the frequency of the signal output from the local oscillator can be stabilized.
【００２５】また、常時給電された前記送受信兼用のミ
キサに加え、別個に設けた送信及び受信の増幅器に代え
て送受信兼用の増幅器を用いた構成にし、この増幅器を
送受信に共用すべく常時給電しているので、送受信の切
り換えの際に発生していた負荷変動はより小さくなり、
より局部発振器の出力周波数の安定化が図れる。Further, in addition to the above-mentioned mixer for both transmission and reception which is always supplied with power, a separate amplifier for transmission and reception is used in place of separately provided amplifiers for transmission and reception, and this amplifier is always supplied with power so as to be shared for transmission and reception. Therefore, the load fluctuation that occurred when switching between transmitting and receiving becomes smaller,
As a result, the output frequency of the local oscillator can be stabilized.
【図１】本発明の一実施例に係る通信装置のＲＦ部のブ
ロック図である。FIG. 1 is a block diagram of an RF unit of a communication device according to an embodiment of the present invention.
【図２】上記実施例に係る通信装置のＲＦ部のブロック
図である。FIG. 2 is a block diagram of an RF unit of the communication device according to the embodiment.
【図３】前記ＲＦ部のより詳細な回路図である。FIG. 3 is a more detailed circuit diagram of the RF unit.
【図４】本発明の他の実施例に係る通信装置のＲＦ部の
ブロック図である。FIG. 4 is a block diagram of an RF unit of a communication device according to another embodiment of the present invention.
【図５】上記他の実施例に係る通信装置のＲＦ部のブロ
ック図である。FIG. 5 is a block diagram of an RF unit of a communication device according to another embodiment.
【図６】従来の通信装置のＲＦ部のブロック図である。FIG. 6 is a block diagram of an RF unit of a conventional communication device.
６、７ スイッチ ９ 局部発振器 １０ ミキサ １０ａ デュアルゲートＦＥＴ ２１、２２ 受信信号増幅器 ３１、３２ 送信信号増幅器 ４１、４２ 増幅器（送受信兼用） 6, 7 switch 9 local oscillator 10 mixer 10a dual gate FET 21, 22 reception signal amplifier 31, 32 transmission signal amplifier 41, 42 amplifier (for both transmission and reception)
フロントページの続き (72)発明者 今岡 俊一 大阪府守口市京阪本通２丁目５番５号 三 洋電機株式会社内 (72)発明者 原田 八十雄 大阪府守口市京阪本通２丁目５番５号 三 洋電機株式会社内Front page continuation (72) Inventor Shunichi Imaoka 2-5-5 Keihan Hon-dori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Inventor Yatsuo Harada 2-chome, Keihan-hondori, Moriguchi-shi, Osaka No. 5 Sanyo Electric Co., Ltd.
Claims (2)
局部発振信号と送信信号又は受信信号とを周波数混合す
る一つのミキサを備え、該ミキサと前記送信信号増幅
器、及び前記ミキサと前記受信信号増幅器とは夫々信号
経路切換のスイッチを介して接続されていることを特徴
とする通信装置。1. A transmission signal amplifier, a reception signal amplifier,
A mixer for frequency-mixing a local oscillation signal and a transmission signal or a reception signal is provided, and the mixer and the transmission signal amplifier, and the mixer and the reception signal amplifier are respectively connected via a switch for signal path switching. A communication device characterized by being present.
兼用の増幅器と、局部発振出力と前記送信信号又は前記
受信信号とを周波数混合する一つのミキサを備え、該ミ
キサと前記増幅器の入力側、及び前記ミキサと前記増幅
器の出力側とは夫々信号経路切換のスイッチを介して接
続されていることを特徴とする通信装置。2. A transmission / reception amplifier for amplifying a reception signal or a transmission signal, and a mixer for frequency-mixing a local oscillation output with the transmission signal or the reception signal, the mixer and an input side of the amplifier, The communication device, wherein the mixer and the output side of the amplifier are connected via a signal path switching switch.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29099293A JP3258791B2 (en) | 1993-04-16 | 1993-11-19 | Communication device |
| US08/342,220 US5590412A (en) | 1993-11-19 | 1994-11-18 | Communication apparatus using common amplifier for transmission and reception |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5-115385 | 1993-04-16 | ||
| JP11538593 | 1993-04-16 | ||
| JP29099293A JP3258791B2 (en) | 1993-04-16 | 1993-11-19 | Communication device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06350478A true JPH06350478A (en) | 1994-12-22 |
| JP3258791B2 JP3258791B2 (en) | 2002-02-18 |
Family
ID=26453900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29099293A Expired - Fee Related JP3258791B2 (en) | 1993-04-16 | 1993-11-19 | Communication device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3258791B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002037704A1 (en) * | 2000-11-03 | 2002-05-10 | Qualcomm Incorporated | Apparatus for reducing phase noise in a local carrier signal caused by powering down of circuit elements during discontinuous data transmissions |
| KR100478894B1 (en) * | 1998-12-22 | 2005-07-07 | 서창전기통신 주식회사 | Radio Frequency Transmission and Receiving System Using Multi-frequency Sampling |
| KR100616507B1 (en) * | 1998-07-07 | 2007-04-25 | 삼성전기주식회사 | Transmission and reception control circuit of time division communication method |
| CN100417036C (en) * | 2004-04-02 | 2008-09-03 | 大唐移动通信设备有限公司 | Message machine of receiving-transmitting time-division duplex wireless communication system |
| US7783266B2 (en) | 2004-10-08 | 2010-08-24 | Panasonic Corporation | Bidirectional frequency converter and radio equipment using same |
-
1993
- 1993-11-19 JP JP29099293A patent/JP3258791B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100616507B1 (en) * | 1998-07-07 | 2007-04-25 | 삼성전기주식회사 | Transmission and reception control circuit of time division communication method |
| KR100478894B1 (en) * | 1998-12-22 | 2005-07-07 | 서창전기통신 주식회사 | Radio Frequency Transmission and Receiving System Using Multi-frequency Sampling |
| WO2002037704A1 (en) * | 2000-11-03 | 2002-05-10 | Qualcomm Incorporated | Apparatus for reducing phase noise in a local carrier signal caused by powering down of circuit elements during discontinuous data transmissions |
| CN100417036C (en) * | 2004-04-02 | 2008-09-03 | 大唐移动通信设备有限公司 | Message machine of receiving-transmitting time-division duplex wireless communication system |
| US7783266B2 (en) | 2004-10-08 | 2010-08-24 | Panasonic Corporation | Bidirectional frequency converter and radio equipment using same |
| US8145143B2 (en) | 2004-10-08 | 2012-03-27 | Panasonic Corporation | Bidirectional frequency converter and radio equipment using same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3258791B2 (en) | 2002-02-18 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |