JPH036041Y2 - - Google Patents
Info
- Publication number
- JPH036041Y2 JPH036041Y2 JP1983070159U JP7015983U JPH036041Y2 JP H036041 Y2 JPH036041 Y2 JP H036041Y2 JP 1983070159 U JP1983070159 U JP 1983070159U JP 7015983 U JP7015983 U JP 7015983U JP H036041 Y2 JPH036041 Y2 JP H036041Y2
- Authority
- JP
- Japan
- Prior art keywords
- distance communication
- amplifier
- long
- short
- high frequency
- 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.)
- Expired
Links
- 239000003990 capacitor Substances 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005236 sound signal Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Transceivers (AREA)
- Transmitters (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、通信状態に応じた音声周波数特性
を、迅速かつ容易に選択する無線電話送受信機に
関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a radiotelephone transceiver that quickly and easily selects audio frequency characteristics according to communication conditions.
従来のこの種の無線電話送受信機においては、
トーンコントロールによつて受信音の周波数特性
を増減し、かつ高域周波数を減衰することにより
Ｓ／Ｎ比を改善したり、また低域周波数を減衰さ
せて受信音のバランスをとつていた。
In conventional wireless telephone transceivers of this type,
Tone control increases or decreases the frequency characteristics of the received sound and attenuates high frequencies to improve the S/N ratio, and attenuates low frequencies to balance the received sound.
しかし、上述のような従来技術においては、受
信側でＳ／Ｎ比を改善する目的で雑音成分の多い
高域を制限したり、あるいは混信妨害を除去する
目的で通過帯域を狭くする等の手段が行われてい
るが、上記混信妨害に係わり、送信側で高域を制
限することによつてスプラツタ等の発生を防止
し、かつこれらの混信妨害に対する配慮は、全く
ないものであつた。
However, in the above-mentioned conventional technology, measures such as limiting the high frequency range with many noise components in order to improve the S/N ratio on the receiving side, or narrowing the pass band in order to eliminate interference, etc. However, with regard to the above-mentioned interference, the generation of splatter etc. is prevented by limiting the high frequency range on the transmitting side, and no consideration is given to these interferences.
本考案は、従来知られている送受信機の、この
ような欠点を改良する目的でなされたものであ
る。 The present invention has been made with the aim of improving these drawbacks of conventionally known transceivers.
本考案は、音声帯域信号の高域を簡単な回路で
制限することにより、平常時に比べてより深い変
調をかけることができるためＳ／Ｎ比が向上し、
かつスプラツタ等による妨害を防止する効果があ
るので、周波数の有効利用が行える無線電話送受
信機であつて、上述の従来技術の課題を解決する
ものである。
By limiting the high frequency range of the audio band signal with a simple circuit, the present invention can apply deeper modulation than in normal conditions, improving the S/N ratio.
In addition, since it has the effect of preventing interference due to splatters and the like, it is a wireless telephone transmitter/receiver that can effectively utilize frequencies and solves the problems of the prior art described above.
次に、本考案の実施例を図面に基づいて説明す
ると、第１図において、送信部のマイクロホン
７、マイクアンプ８、スピーチプロセツサ９、増
幅器１０及び変調器１１をそれぞれ縦続接続して
電力増幅器３の一方の入力端に接続し、また、こ
の電力増幅器３の他方の入力端には、発振器１及
びバツフア増幅器２が縦続接続されている。
Next, an embodiment of the present invention will be described based on the drawings. In FIG. 1, a microphone 7, a microphone amplifier 8, a speech processor 9, an amplifier 10, and a modulator 11 of a transmitting section are connected in cascade to form a power amplifier. The oscillator 1 and the buffer amplifier 2 are connected to one input terminal of the power amplifier 3, and the other input terminal of the power amplifier 3 is connected in cascade.
電力増幅器３の出力端は切換スイツチS11の固
定接点ａに接続され、可動接点ｂは直線増幅器５
の入力端に接続し、出力側は切換スイツチS12の
可動接点ｄに接続して、前記切換スイツチS11の
可動接点ｃと前記切換スイツチS12の可動接点ｅ
とは直通回路４により接続されている。更に前記
切換スイツチS12の固定接点ｆは、送受信切換ス
イツチS2の可動接点ｇに接続され、また前記送受
信切換スイツチS2の固定接点ｉは、アンテナ６に
接続されている。 The output end of the power amplifier 3 is connected to the fixed contact a of the changeover switch S11 , and the movable contact b is connected to the linear amplifier 5.
The output side is connected to the movable contact d of the changeover switch S12 , and the movable contact c of the changeover switch S11 and the movable contact e of the changeover switch S12 are connected to the input end of the changeover switch S12 .
and is connected by a direct circuit 4. Furthermore, the fixed contact f of the changeover switch S 12 is connected to the movable contact g of the transmission/reception changeover switch S 2 , and the fixed contact i of the transmission/reception changeover switch S 2 is connected to the antenna 6 .
一方、受信部において、送受信切換スイツチS2
の可動接点ｈは、高周波増幅器１２の入力端に接
続し、更にこの高周波増幅器１２の出力端は、切
換スイツチS13の固定接点ｊに接続されているが、
この切換スイツチS13の可動接点水と切換スイツ
チS14の可動接点ｍとの間には帯域フイルタF1を、
また同様に、可動接点Ｉと可動接点ｎとの間には
帯域フイルタF2をそれぞれ接続し、前記切換ス
イツチS14の固定接点ｏは検波器１３の入力端に
接続する。また、帯域フイルタF2の帯域幅は帯
域フイルタF1より比較的せまく設定し、音声帯
域信号の高域を制限するようにしている。更に検
波器１３の出力は、音声増幅器１４を介してスピ
ーカ１５を動作する。 On the other hand, in the receiving section, the transmitting/receiving switch S2
The movable contact h is connected to the input end of the high frequency amplifier 12, and the output end of this high frequency amplifier 12 is connected to the fixed contact j of the changeover switch S13 .
A bandpass filter F1 is connected between the movable contact water of the changeover switch S13 and the movable contact m of the changeover switch S14 .
Similarly, a bandpass filter F 2 is connected between the movable contact I and the movable contact n, and the fixed contact o of the changeover switch S 14 is connected to the input end of the detector 13. Further, the bandwidth of the band filter F 2 is set to be relatively narrower than that of the band filter F 1 to limit the high frequency range of the audio band signal. Further, the output of the wave detector 13 operates a speaker 15 via an audio amplifier 14.
なお、送信部のマイクアンプ８とスピーチプロ
セツサ９との接続個所、並びに受信側の検波器１
３と音声増幅器１４との接続個所に、それぞれ高
域制限用コンデンサC1及びC2を接続し、かつ、
このコンデンサC1及びC2の他端を切換スイツチ
S15の可動接点ｐと、切換スイツチS16の可動接点
ｒに接続する一方、前記切換スイツチS15及びS16
の固定接点ｑ及びｓを接地する。 In addition, the connection point between the microphone amplifier 8 and the speech processor 9 on the transmitter side, and the detector 1 on the receiver side.
High frequency limiting capacitors C 1 and C 2 are connected to the connection points between 3 and the audio amplifier 14, respectively, and
Switch the other ends of this capacitor C 1 and C 2
While connecting the movable contact p of S 15 and the movable contact r of the changeover switch S 16 , the changeover switches S 15 and S 16
The fixed contacts q and s of are grounded.
ここで、切換スイツチS11ないしS16は連動する
よう構成し、かつ第２図に示すようにパネル１６
に設けたものであつて、切換スイツチS1を上側に
すると遠距離通信用になり、下側にすると近距離
通信用に切りかわる。 Here, the changeover switches S 11 to S 16 are configured to operate in conjunction with each other, and as shown in FIG.
When the changeover switch S1 is set to the upper side, it is used for long-distance communication, and when it is set to the lower side, it is switched to short-distance communication.
すなわち、送信部において、マイクロホン７か
らの音声信号はマイクアンプ８、スピーチプロセ
ツサ９及び増幅器１０をとおつて変調器１１に供
給され、また発振器１からの搬送波はバツフア増
幅器２を介して電力増幅器３に供給し、かつ前記
変調器１１により変調されて該切換スイツチS11
の固定接点ａ及び可動接点ｃ又はｂ、直通回路４
又は直線増幅器５、切換スイツチS12の可動接点
ｅ又はｄ及び固定接点ｆ、並びに送受信切換スイ
ツチS2の可動接点ｇ及び固定接点ｉをとおつて、
アンテナ６から送信される。 That is, in the transmitting section, the audio signal from the microphone 7 is supplied to the modulator 11 via the microphone amplifier 8, the speech processor 9, and the amplifier 10, and the carrier wave from the oscillator 1 is supplied to the power amplifier 3 via the buffer amplifier 2. and is modulated by the modulator 11 to the changeover switch S 11
Fixed contact a and movable contact c or b, direct circuit 4
Or through the linear amplifier 5, the movable contact e or d and the fixed contact f of the changeover switch S12 , and the movable contact g and the fixed contact i of the transmission/reception changeover switch S2 ,
It is transmitted from antenna 6.
次に受信部において、アンテナ６で誘起した受
信信号は、送受信切換スイツチS2の固定接点ｉ及
び可動接点ｈをとおり、高周波増幅器１２並びに
切換スイツチS13の固定接点ｊ及び可動接点ｋ又
は１をとおつて帯域フイルタF1又はF2と、切換
スイツチS14の可動接点ｍ又はｎ及び固定接点ｏ
をとおり、更に検波器１３及び音声増幅器１４を
介してスピーカ１５を動作させる。 Next, in the receiving section, the received signal induced by the antenna 6 passes through the fixed contact i and the movable contact h of the transmission/reception changeover switch S2 , and then passes through the high frequency amplifier 12 and the fixed contact j and the movable contact k or 1 of the changeover switch S13 . The bandpass filter F1 or F2 , the movable contact m or n of the changeover switch S14 , and the fixed contact o
, and further operates the speaker 15 via the detector 13 and the audio amplifier 14.
一方、切換スイツチS1を近距離通信用にした場
合、マイクアンプ８あるいは検波器１３の出力端
に設けた高域制限用コンデンサC1又はC2が、切
換スイツチ15又はS16により接地されないため、
制限のない音声帯域信号が出力される。 On the other hand, when the switch S 1 is used for short-range communication, the high frequency limiting capacitor C 1 or C 2 installed at the output end of the microphone amplifier 8 or the detector 13 is not grounded by the switch 15 or S 16 . ,
An unrestricted audio band signal is output.
他方、切換スイツチS1を遠距離通信用にした場
合、マイクアンプ８あるいは検波器１３の出力端
に設けた高域制限用コンデンサC1又はC2が、切
換スイツチS15又はS16により接地されるため、高
域が制限された音声信号を出力することになる。 On the other hand, when the switch S 1 is used for long-distance communication, the high-frequency limiting capacitor C 1 or C 2 installed at the output end of the microphone amplifier 8 or the detector 13 is grounded by the switch S 15 or S 16 . Therefore, an audio signal with limited high frequencies is output.
本考案による遠距離通信用又は近距離通信用の
切換スイツチをパネルに設け、遠距離通信のよう
な弱い電波で運用する場合と、近距離通信のよう
なノイズ等に影響されない良質の電波で運用する
場合において、前記切換スイツチと連動し、迅速
かつ容易に切りかえを行つて、通過帯域選択手段
及び高域制限手段によりＳ／Ｎ比を改善し、不要
なノイズやスプラツタ等の発生を防止する効果が
ある。
A switch for long-distance communication or short-distance communication according to the present invention is installed on the panel, and can be operated with weak radio waves such as long-distance communication, and with high-quality radio waves that are not affected by noise such as short-distance communication. In this case, the effect is to quickly and easily switch in conjunction with the changeover switch, improve the S/N ratio by the pass band selection means and the high frequency limit means, and prevent the generation of unnecessary noise, splatter, etc. There is.
第１図は本考案に係る一実施例を示す無線電話
送受信機のブロツク図、第２図は本考案に係る実
施態様を示す説明図である。
１……発振器、２……バツフア増幅器、３……
電力増幅器、４……直通回路、５……直線増幅
器、６……アンテナ、７……マイクロホン、８…
…マイクアンプ、９……スピーチプロセツサ、１
０……増幅器、１１……変調器、１２……高周波
増幅器、１３……検波器、１４……音声増幅器、
１５……スピーカ、１６……パネル、C1，C2…
…高域制限用コンデンサ、F1，F2……帯域フイ
ルタ、S1，S11〜S16……切換スイツチ、S2……送
受信切換スイツチ。
FIG. 1 is a block diagram of a wireless telephone transceiver showing one embodiment of the present invention, and FIG. 2 is an explanatory diagram showing an embodiment of the present invention. 1... Oscillator, 2... Buffer amplifier, 3...
Power amplifier, 4...Direct circuit, 5...Linear amplifier, 6...Antenna, 7...Microphone, 8...
...Microphone amplifier, 9...Speech processor, 1
0...Amplifier, 11...Modulator, 12...High frequency amplifier, 13...Detector, 14...Audio amplifier,
15...Speaker, 16...Panel, C1 , C2 ...
...High frequency limiting capacitor, F1 , F2 ...Band filter, S1 , S11 to S16 ...Selector switch, S2 ...Transmit/receive selector switch.
Claims (1)
チ手段により切換えて行なう無線電話送受信機に
おいて、前記スイツチ手段は遠距離通信用と近距
離通信用に区別して構成され、送信部のマイクア
ンプ８及びスピーチプロセツサ９の間に高域制限
用コンデンサC1の一端を接続し、かつ、この高
域制限用コンデンサC1の他端を近距離通信では
非接地に、遠距離通信では接地するよう前記スイ
ツチ手段を切換えることにより、高域部を制限す
る第１の高域制限手段と、前記送信部の電力増幅
器３及び送受信切換スイツチS2の間に遠距離通信
用の直線増幅器５又は近距離通信用の直通回路４
を設ける一方、受信部の高周波増幅器１２及び検
波器１３の間に近距離通信用の帯域フイルタF1
又は遠距離通信用の帯域フイルタF2を設けた通
過帯域選択手段と、前記受信部の検波器１３及び
増幅器１４の間に高域制限用コンデンサC2の一
端を接続し、かつ、この高域制限用コンデンサ
C2の他端を近距離通信では非接地に、遠距離通
信では接地するよう前記スイツチ手段を切換える
ことにより、高域部を制限する第２の高域制限手
段とを具備し、前記スイツチ手段を遠距離通信側
に選択すると、送信・受信ともに音声帯域信号の
高域を制限することを特徴とする無線電話送受信
機。 In a radio telephone transmitter/receiver in which the operation of long-distance communication or short-distance communication is switched by a switch means, the switch means is configured separately for long-distance communication and short-distance communication, and includes a microphone amplifier 8 and a speech processor in the transmitting section. The switch means connects one end of the high frequency limiting capacitor C 1 between the setter 9 and connects the other end of the high frequency limiting capacitor C 1 to ungrounded for short range communication and grounded for long distance communication. A linear amplifier 5 for long-distance communication or a linear amplifier 5 for short-distance communication is connected between the first high-frequency limiting means that limits the high-frequency range and the power amplifier 3 and transmission/reception switch S2 of the transmitting section. Direct circuit 4
A bandpass filter F 1 for short-range communication is provided between the high-frequency amplifier 12 and the wave detector 13 of the receiving section.
Alternatively, one end of a high frequency limiting capacitor C 2 is connected between a pass band selection means provided with a band filter F 2 for long distance communication and the detector 13 and amplifier 14 of the receiving section, and Limiting capacitor
a second high frequency limiting means for limiting the high frequency region by switching the switch means so that the other end of C2 is ungrounded for short distance communication and grounded for long distance communication; A wireless telephone transmitter/receiver characterized in that when selected for long-distance communication, the high range of voice band signals is limited for both transmission and reception.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1983070159U JPS59147346U (en) | 1983-05-11 | 1983-05-11 | wireless telephone transceiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1983070159U JPS59147346U (en) | 1983-05-11 | 1983-05-11 | wireless telephone transceiver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59147346U JPS59147346U (en) | 1984-10-02 |
| JPH036041Y2 true JPH036041Y2 (en) | 1991-02-15 |
Family
ID=30200312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1983070159U Granted JPS59147346U (en) | 1983-05-11 | 1983-05-11 | wireless telephone transceiver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59147346U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5789334A (en) * | 1980-11-25 | 1982-06-03 | Yaesu Musen Co Ltd | Rf speech processor circuit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55171148U (en) * | 1979-05-25 | 1980-12-08 |
-
1983
- 1983-05-11 JP JP1983070159U patent/JPS59147346U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5789334A (en) * | 1980-11-25 | 1982-06-03 | Yaesu Musen Co Ltd | Rf speech processor circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59147346U (en) | 1984-10-02 |
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