JPS61220528A - Radio equipment with simultaneous transmission and reception - Google Patents
Radio equipment with simultaneous transmission and receptionInfo
- Publication number
- JPS61220528A JPS61220528A JP60061285A JP6128585A JPS61220528A JP S61220528 A JPS61220528 A JP S61220528A JP 60061285 A JP60061285 A JP 60061285A JP 6128585 A JP6128585 A JP 6128585A JP S61220528 A JPS61220528 A JP S61220528A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- transmission
- frequency signal
- circuit
- reception
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transceivers (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、コードレス電話や自動車電話等で用いられる
同時送受話無線機に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a simultaneous transmitting/receiving radio device used in cordless telephones, car telephones, and the like.
（従来の技術）
従来、この種の無線機は、第２図にブロック図で示すよ
うに、受信第１０−カル回路１８の出力が、受信第１ミ
キサー４と送信用ミキサー１６とに同時に加えられる方
式であり、送信系統にもミキサーを必要としていた。(Prior Art) Conventionally, in this type of radio equipment, as shown in the block diagram in FIG. This system required a mixer in the transmission system as well.
この第２図の無線機では、送信時には、端子２２に入力
された音声信号は、低周波増幅１３で増幅された後に変
調回路１７へ加えられる。変調回路１７の出力は、送信
用ミキサー】６にて受信？Ｒ１ローカルと混合され、送
信周波数に変換された後に高周波フィルタ１５、電力増
幅回路１４及び送受共用器フィルタ２を通り、空中線１
へと導かれる。In the radio device shown in FIG. 2, at the time of transmission, the audio signal input to the terminal 22 is amplified by the low frequency amplifier 13 and then applied to the modulation circuit 17. The output of the modulation circuit 17 is received by the transmitting mixer ]6? After being mixed with R1 local and converted to a transmission frequency, it passes through a high frequency filter 15, a power amplification circuit 14, and a duplexer filter 2, and then is transmitted to the antenna 1.
be led to.
一方受信時には、空中線１からの受信周波数信号は、送
受共用器フィルタ２から高周波増幅回路３を通り、受信
第１ミキザー４へ導かれる。受信第１ミギザー４にて第
１中間周波数に変換された信号１０４け、第１中間周波
フィルタ５を通り、受信第２ミギザー６にて受信第２０
−カル回路１９の出力と混合され、第２中間周波数とな
る。第２中間周波数信号１０６は、第２中間周波回路７
を通り？Ｍ調回路８で復調された後に低周波増幅回路９
で増幅され、低周波出力として端子２１から出力され、
スピーカーなどを駆動する。On the other hand, during reception, the reception frequency signal from the antenna 1 is guided from the duplexer filter 2 to the high frequency amplifier circuit 3 to the first reception mixer 4. The signal 104 converted to the first intermediate frequency by the first receiving migrater 4 passes through the first intermediate frequency filter 5, and is converted into the second receiving migrater 6 by the second receiving migrater 6.
- It is mixed with the output of the cull circuit 19 and becomes the second intermediate frequency. The second intermediate frequency signal 106 is transmitted to the second intermediate frequency circuit 7
Through? After being demodulated by the M modulation circuit 8, the low frequency amplifier circuit 9
is amplified and output from terminal 21 as a low frequency output,
Drives speakers, etc.
（発明が解決しようとする問題点）
以上の説明のごとく、従来の構成では、ミキサーが送信
系統にも用いられ、このミキサー１６で発生するスプリ
アスを除去するために送信用ミキサー１６と電力増幅回
路１４との間に高周波フィルタ１５の挿入を必要とする
。この高周波フィルタは相当な大きさであり収容容積を
大きく必要とするから、無線機の大型化及び高価格をま
ねいていた。寸だ、送信周波数安定度が、受信第１０−
カル回路１８の周波数安定度と変調回路１７０周波数安
定度との両方に依存するから、所要の送信周波数安定度
を得るには両刀の回路の周波数安定度を厳しくする必要
があり、高価な周波数関連素子を必要とする要因となっ
ていた。(Problems to be Solved by the Invention) As explained above, in the conventional configuration, a mixer is also used for the transmission system, and in order to remove spurious signals generated in the mixer 16, the transmission mixer 16 and the power amplifier circuit 14, it is necessary to insert a high frequency filter 15 between the two. This high-frequency filter is quite large and requires a large storage capacity, leading to an increase in the size and cost of the radio. That's right, the transmit frequency stability is 10th -
It depends on both the frequency stability of the cull circuit 18 and the frequency stability of the modulation circuit 170. Therefore, in order to obtain the required transmission frequency stability, it is necessary to tighten the frequency stability of both circuits, which requires expensive frequency-related This was a factor that required a new element.
そこで、本発明の１］的は、小形化及び低価格化が容易
な同時送受話無線機の提供にある。Therefore, the object of the present invention is to provide a simultaneous transmitting/receiving radio device that is easy to downsize and reduce in price.
（問題点を解決するだめの手段）
前述の問題点を解決するために本発明が提供する手段は
、受信高周波信号を第１のローカル信号と混合して第１
の中間周波数信号を生ずる第１のミキサーと、この第１
のミキサーの出力を受け前記第１の中間周波数信号を通
過させる帯域通過フィルタと、このフィルタの出力を第
２のローカル信号と混合して第２の中間周波数信号を生
ずる第２のミキサーと、前記第２の中間周波数信号を復
調する回路と、送信音声信号により変調した送信高周波
信号を発生する回路とを備える同時送受話無線機であっ
て、前記第１のローカル信号及び前記送信音声信号は前
記送信高周波信号発生回路が１つの高周波信号を前記送
信音声信号で変調して生成し、前記第１の中間周波数信
号に含まれる前記送信音声信号成分が前記帯域通過フィ
ルタで受ける移相変化とほぼ同様の移送変化をｉＪ記送
信音声信号に与えた補正音声信号を生成する回路が備え
てあり、前記第２のローカル信号は前記送信音声信号で
変調してあることを特徴とする。(Means for Solving the Problems) Means provided by the present invention to solve the above-mentioned problems is to mix the received high frequency signal with the first local signal and to mix the received high frequency signal with the first local signal.
a first mixer producing an intermediate frequency signal;
a bandpass filter that receives the output of the mixer and passes the first intermediate frequency signal; a second mixer that mixes the output of the filter with a second local signal to produce a second intermediate frequency signal; A simultaneous transmitting/receiving radio device comprising a circuit for demodulating a second intermediate frequency signal and a circuit for generating a transmitting high frequency signal modulated by a transmitting audio signal, wherein the first local signal and the transmitting audio signal are A transmission high frequency signal generation circuit modulates one high frequency signal with the transmission audio signal to generate a signal, and the transmission audio signal component included in the first intermediate frequency signal undergoes a phase shift change that is substantially the same as the phase shift change that the transmission audio signal component included in the first intermediate frequency signal undergoes in the band pass filter. The second local signal is characterized in that the second local signal is modulated by the transmitted audio signal, and the second local signal is modulated by the transmitted audio signal.
（実施例） 以下本発明の実施例について図面を参照して説明する。(Example) Embodiments of the present invention will be described below with reference to the drawings.
第１図は本発明の一実施例を示すブロック図である。こ
の実施例では、受信第１０−カルと送信周波数の発生回
路１０の出力は、受信第１ミキサー４及び電力増幅回路
１４の両方へ加えられる。FIG. 1 is a block diagram showing one embodiment of the present invention. In this embodiment, the output of the receive 10-cal and transmit frequency generation circuit 10 is applied to both the receive first mixer 4 and the power amplifier circuit 14.
受信のみの状態においては、空中線１からの受信周波数
信号は、送受共用器フィルタ２及び高周波増幅回路３を
通り、受信第１ミギサー４へ加えられる。受信第１ミキ
サー４にて第１中間周波数に変換された信号１０４は、
第１中間周波フィルタ５を通り信号１０５となる。信号
１０５は、受信第２ミキサー６にて受信第２０−カルの
発生回路１１の出力１１１と混合され、第２中間周波数
信号１０６となる。第２中間周波数信号１０６は、第２
中間周波回路７、復調回路８及び低周波増幅回路９を通
り、端子２１から低周波出力として出力され、スピーカ
ーなどを駆動する。In the receiving only state, the receiving frequency signal from the antenna 1 passes through the duplexer filter 2 and the high frequency amplifier circuit 3 and is applied to the first receiving transmitter 4. The signal 104 converted to the first intermediate frequency by the first receiving mixer 4 is
It passes through the first intermediate frequency filter 5 and becomes a signal 105. The signal 105 is mixed with the output 111 of the receiving 20th-cal generating circuit 11 in the second receiving mixer 6, and becomes a second intermediate frequency signal 106. The second intermediate frequency signal 106
The signal passes through an intermediate frequency circuit 7, a demodulation circuit 8, and a low frequency amplification circuit 9, and is output as a low frequency output from a terminal 21 to drive a speaker or the like.
同時送受話時には、マイクなどから端子２２へ入力され
た音声信号は、低周波増幅回路１３で増幅され、送信変
調波１１３として、受信第１０−カルと送信周波数の発
生回路１０へ加えられる。During simultaneous transmission and reception, an audio signal input from a microphone or the like to the terminal 22 is amplified by the low frequency amplification circuit 13, and is applied as a transmission modulated wave 113 to the reception and transmission frequency generation circuit 10.
回路１０は、送信変調波１１３により高周波信号を変調
する。送信変調波１１３により変調された高周波信号は
、送信高周波信号１０ａとして電力増幅回路１４へ加え
られ為とともに、受信第１０−カル１０ｔ）として受信
第１ミキサー４へ加えられる。電力増幅回路１４の出力
１１４は、送受共用器フィルタ２を通り、空中線１から
輻射される。The circuit 10 modulates a high frequency signal using a transmitted modulated wave 113. The high frequency signal modulated by the transmission modulated wave 113 is applied to the power amplifier circuit 14 as a transmission high frequency signal 10a, and is also applied to the first reception mixer 4 as a reception signal 10t). The output 114 of the power amplifier circuit 14 passes through the duplexer filter 2 and is radiated from the antenna 1.
このとき、受信第１ミキザー４へ加えられた、受信第１
０−カルにも送信変調波で変調がかけられているから、
受信第１ミキサー４で変換された第１中間周波数信号１
０４には、送信変調波成分が含捷れる。この送信変調波
成分は、第１中間周波フィルタ５の影響で移相変化を受
け、受信第２ミキザー６へ加えられる。フィルタ５の移
相特性は周波数特性をもっている。At this time, the first receiving mixer 4 is added to the first receiving mixer 4.
Since 0-Cal is also modulated by the transmitted modulation wave,
First intermediate frequency signal 1 converted by first receiving mixer 4
04 includes the transmitted modulated wave component. This transmitted modulated wave component undergoes a phase shift change under the influence of the first intermediate frequency filter 5 and is added to the second receiving mixer 6. The phase shift characteristic of the filter 5 has a frequency characteristic.
一方送信変調波１１３は、移相補正回路１２へも加えら
れる。移相補正回路１２は、第１中間周波フィルタ５の
移相特性と同様な移相変化を送信変調波１１３に与えて
受信第２０−カル１１１の発生回路１１へ加える。受信
第２０−カル発生回路１１は移相補正回路１２の出力に
より変調された受信第２０−カル１】１を出力する。こ
の受信第２０−カル１１１の変調度を調節することによ
り、受信第２ミキ丈−６において、第１中間周波数信号
１０５に含１れる送信変調波成分を受信第２０−カル１
１１に含壕れる送信変調波成分で打ち消し合うように混
合できる。このように受信杭２０−カル１１１の変調度
を適切に設定することにより、第２中間周波数信号１０
６には、送信変調波成分が含まれないようにする。従っ
て、低周波増幅回路９からは、送信変調波成分を含壕な
い通常の受信波成分のみが出力される。On the other hand, the transmitted modulated wave 113 is also applied to the phase shift correction circuit 12. The phase shift correction circuit 12 applies a phase shift change similar to the phase shift characteristic of the first intermediate frequency filter 5 to the transmission modulated wave 113 and applies it to the generation circuit 11 of the reception 20th cull 111. The reception 20th-Cull generation circuit 11 outputs the reception 20th-Cull 1 ]1 modulated by the output of the phase shift correction circuit 12 . By adjusting the modulation degree of the 20th receiving signal 111, the transmitting modulated wave component included in the first intermediate frequency signal 105 is transmitted to the 20th receiving signal 111 at the receiving 2nd receiving signal 111.
They can be mixed so as to cancel each other out by the transmission modulated wave components contained in the waveform 11. By appropriately setting the modulation degree of the receiving pile 20-cul 111 in this way, the second intermediate frequency signal 10
6 should not include a transmission modulated wave component. Therefore, the low frequency amplification circuit 9 outputs only the normal received wave component that does not contain the transmitted modulated wave component.
以上説明したように、本実施例は、高周波の送信用ミキ
サー１６、高周波フィルタ１５及び高い周波数安定度が
必要である変調回路１７の削除ができる利点を有する。As described above, this embodiment has the advantage that the high frequency transmission mixer 16, the high frequency filter 15, and the modulation circuit 17 which requires high frequency stability can be omitted.
さらに、この実施例は、低周波での移相補正回路１２並
びに受信第１及び第２０−カルへ変調をかける手段だけ
で、受信出力に含まれる送信変調波成分の打ち消しを行
なうよう構成しているから、複雑な高周波回路である送
信用ミキサー１６及び高周波フィルタ１５を備える従来
の方式よりも、回路構成が簡単になり、無線機の小型化
がはかれ、価格も低減される利点を有する。また、送信
周波数安定度は、受信第１０−カルと送信周波数の発生
回路１０の周波数安定度のみを考慮するだけでよいから
、本実施例は従来方式より安価に製造できる。Furthermore, this embodiment is configured to cancel the transmitted modulated wave component included in the received output only by the low frequency phase shift correction circuit 12 and the means for applying modulation to the first and 20th receiving signals. Therefore, compared to the conventional system including the transmission mixer 16 and the high-frequency filter 15, which are complicated high-frequency circuits, the circuit configuration is simpler, the radio equipment can be made smaller, and the cost can be reduced. Furthermore, since it is only necessary to consider the frequency stability of the reception frequency and the transmission frequency generation circuit 10 for the transmission frequency stability, this embodiment can be manufactured at a lower cost than the conventional system.
（発明の効果）
本発明によれば、以上に詳しく述べた如く、小形化及び
低価格化が容易な同時送受話無線機が提供できる。(Effects of the Invention) According to the present invention, as described in detail above, it is possible to provide a simultaneous transmitting/receiving radio device that is easy to downsize and reduce in price.
第１図は本発明の一実施例を示すブロック図、第２図は
従来の同時送受話無線機の一実施例を示すブロック図で
ある。
１・・・空中線、２・・・送受共用器フィルタ、３・・
・高周波増幅回路、４・・・受信第１ミキザー、訃・・
第１中間周波フィルタ、６・・・受信第２ミキサー、７
・・・第２中間周波回路、８・・・復調回路、９．１３
・・・低周波増幅回路、１０・・・受信第１０−カルと
送信周波数の発生回路、１１・・・受信第２０−カルの
発生回路、１２・・・移相補正回路、１４・・・電力増
幅回路、１５・・・高周波フィルタ、１６・・・送信用
ミギザー、１７・・・変調回路、１８・・・受信第１０
−カル回路、１９・・・受信第２０−カル回路。FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a block diagram showing an embodiment of a conventional simultaneous transmitting/receiving radio device. 1... Antenna, 2... Dual transmitter/receiver filter, 3...
・High frequency amplification circuit, 4...Receiving first mixer, 4...
First intermediate frequency filter, 6... Second receiving mixer, 7
...Second intermediate frequency circuit, 8...Demodulation circuit, 9.13
. . . Low frequency amplifier circuit, 10 . . . 10th reception signal and transmission frequency generation circuit, 11 . . . 20th reception signal generation circuit, 12 . . . Phase shift correction circuit, 14 . . . Power amplification circuit, 15... High frequency filter, 16... Transmission migizer, 17... Modulation circuit, 18... Receiving No. 10
-Cull circuit, 19... Receiving 20th -Cull circuit.
Claims (1)
中間周波数信号を生ずる第１のミキサーと、この第１の
ミキサーの出力を受け前記第１の中間周波数信号を通過
させる帯域通過フィルタと、このフィルタの出力を第２
のローカル信号と混合して第２の中間周波数信号を生ず
る第２のミキサーと、前記第２の中間周波数信号を復調
する回路と、送信音声信号により変調した送信高周波信
号を発生する回路とを備える同時送受話無線機において
、前記第１のローカル信号及び前記送信高周波信号は前
記送信高周波信号発生回路が１つの高周波信号を前記送
信音声信号で変調して生成し、前記第１の中間周波数信
号に含まれる前記送信音声信号成分が前記帯域通過フィ
ルタで受ける移相変化とほぼ同様の移相変化を前記送信
音声信号に与えた補正音声信号を生成する回路が備えて
あり、前記第２のローカル信号は前記補正音声信号で変
調してあることを特徴とする同時送受話無線機。a first mixer that mixes the received high frequency signal with a first local signal to produce a first intermediate frequency signal; and a bandpass filter that receives the output of the first mixer and passes the first intermediate frequency signal. , the output of this filter is
a second mixer for generating a second intermediate frequency signal by mixing with a local signal of the second intermediate frequency signal, a circuit for demodulating the second intermediate frequency signal, and a circuit for generating a transmission high frequency signal modulated by the transmission audio signal. In the simultaneous transmitting/receiving radio device, the first local signal and the transmitting high frequency signal are generated by the transmitting high frequency signal generating circuit by modulating one high frequency signal with the transmitting audio signal, and generating the first local signal and the transmitting high frequency signal by modulating one high frequency signal with the transmitting audio signal. a circuit for generating a corrected audio signal in which the transmitted audio signal is given a phase shift change substantially similar to the phase shift change that the transmitted audio signal component included in the transmitted audio signal undergoes in the bandpass filter; is a simultaneous transmitting/receiving radio device characterized in that the above-mentioned corrected audio signal is modulated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60061285A JPS61220528A (en) | 1985-03-26 | 1985-03-26 | Radio equipment with simultaneous transmission and reception |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60061285A JPS61220528A (en) | 1985-03-26 | 1985-03-26 | Radio equipment with simultaneous transmission and reception |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61220528A true JPS61220528A (en) | 1986-09-30 |
Family
ID=13166773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60061285A Pending JPS61220528A (en) | 1985-03-26 | 1985-03-26 | Radio equipment with simultaneous transmission and reception |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61220528A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2641915A1 (en) * | 1989-01-13 | 1990-07-20 | Telenokia Oy | TRANSMITTER-RECEIVER MODULE IN FREQUENCY |
| FR2641916A1 (en) * | 1989-01-13 | 1990-07-20 | Telenokia Oy | Frequency-modulated transmitter/receiver |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6046622A (en) * | 1983-08-24 | 1985-03-13 | Toyo Commun Equip Co Ltd | Simultaneous transmitting/receiving communication system using local oscillator of receiver also as channel oscillator of transmitter |
-
1985
- 1985-03-26 JP JP60061285A patent/JPS61220528A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6046622A (en) * | 1983-08-24 | 1985-03-13 | Toyo Commun Equip Co Ltd | Simultaneous transmitting/receiving communication system using local oscillator of receiver also as channel oscillator of transmitter |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2641915A1 (en) * | 1989-01-13 | 1990-07-20 | Telenokia Oy | TRANSMITTER-RECEIVER MODULE IN FREQUENCY |
| FR2641916A1 (en) * | 1989-01-13 | 1990-07-20 | Telenokia Oy | Frequency-modulated transmitter/receiver |
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