JPH033007Y2 - - Google Patents
Info
- Publication number
- JPH033007Y2 JPH033007Y2 JP1984031921U JP3192184U JPH033007Y2 JP H033007 Y2 JPH033007 Y2 JP H033007Y2 JP 1984031921 U JP1984031921 U JP 1984031921U JP 3192184 U JP3192184 U JP 3192184U JP H033007 Y2 JPH033007 Y2 JP H033007Y2
- Authority
- JP
- Japan
- Prior art keywords
- transmitting
- filter
- transmission
- frequency
- receiving
- 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
- 230000005540 biological transmission Effects 0.000 description 20
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Transceivers (AREA)
Description
【考案の詳細な説明】
〔考案の技術分野〕
この考案は、送受信周波数を高速で切替え、か
つ高電力の送信を行う送受信装置に関するもので
ある。[Detailed Description of the Invention] [Technical Field of the Invention] This invention relates to a transmitting/receiving device that switches transmission and reception frequencies at high speed and performs high-power transmission.
従来この種の装置として第１図に示すものがあ
つた。図において、１はVCO、２は送信出力レ
ベル調整用の減衰器、３は電力増幅器、４は送信
不要波除去用フイルタ、５は送受信兼用空中線、
６は受信機、７は送信周波数の基準となる周波数
合成器である。８は増幅器用電源、９は送信時に
“接”となるスイツチである。
A conventional device of this type is shown in FIG. In the figure, 1 is a VCO, 2 is an attenuator for adjusting the transmission output level, 3 is a power amplifier, 4 is a filter for removing unnecessary transmission waves, 5 is an antenna for transmitting and receiving,
6 is a receiver, and 7 is a frequency synthesizer that serves as a reference for the transmission frequency. 8 is a power supply for the amplifier, and 9 is a switch that is turned on during transmission.
次に動作について説明する。送信を行なう場
合、周波数合成器７とVCO１とで決定された送
信信号は、減衰器２によつて出力レベルを調整さ
れ、電力増幅器３に供給され、規定の電力に増幅
される。増幅された送信信号はフイルタ４により
不要波を除去され空中線５に伝達され空中線５に
より送出される。受信信号は空中線５により受信
した受信機６にて検波、再生が行なわれる。電源
系統は送信時にはスイツチ９は“接”となり増幅
器用電源８より電力増幅器３に供給される。又、
逆に受信時にはスイツチ９は“断”となり、電力
増幅器は休止する。 Next, the operation will be explained. When transmitting, the output level of the transmission signal determined by the frequency synthesizer 7 and the VCO 1 is adjusted by the attenuator 2, and then supplied to the power amplifier 3, where it is amplified to a specified power. The amplified transmission signal has unnecessary waves removed by a filter 4, is transmitted to an antenna 5, and is sent out by the antenna 5. The received signal is received by an antenna 5 and is detected and reproduced by a receiver 6. In the power supply system, the switch 9 is "closed" during transmission, and the power is supplied to the power amplifier 3 from the amplifier power supply 8. or,
On the other hand, during reception, the switch 9 is turned off and the power amplifier is stopped.
従来の送受信装置は以上のように構成されてい
るので、送信信号は、受信時には信号出力レベル
を受信機６の動作に悪影響を与えない為に“断”
とするか、それと等価なレベル迄出力を低下させ
ることが必要となり、VCO１、電力増幅器３の
電源を“断”にするか、減衰器２の減衰量を大き
くする等の方法がとられている為に、送信、受信
の切替に対し、高速性が損なわれる等の欠点があ
つた。 Since the conventional transmitting/receiving device is configured as described above, the signal output level of the transmitted signal is "cut off" at the time of reception so as not to adversely affect the operation of the receiver 6.
In other words, it is necessary to reduce the output to an equivalent level, and methods such as turning off the power to VCO 1 and power amplifier 3, or increasing the attenuation amount of attenuator 2 are taken. Therefore, there were drawbacks such as loss of high speed when switching between transmission and reception.
この考案は上記のような従来のものの欠点を除
去するためになされたもので、送信波阻止用フイ
ルタを利用し、受信時には送信周波数をフイルタ
４の阻止域に設定できる周波数合成器７及び
VCO１にすることにより、送信、受信の切替に
対し高速性を維持できる送受信装置を提供するこ
とを目的としている。
This invention was made in order to eliminate the drawbacks of the conventional ones as described above, and includes a frequency synthesizer 7 and a frequency synthesizer 7 that utilizes a filter for blocking transmission waves and can set the transmission frequency in the rejection band of the filter 4 during reception.
By using VCO1, the purpose is to provide a transmitting/receiving device that can maintain high speed when switching between transmitting and receiving.
以下、この考案の一実施例を図について説明す
る。第２図において、１０は高速周波数合成器で
周波数を高速で切替える。２は送信出力レベル調
整用の減衰器、３は電力増幅器、４ａは受信時に
送信波阻止用フイルタ、４ｂは送信不要波除去用
フイルタ、５は送受信兼用空中線、６は受信機、
８は増幅器用電源である。
An embodiment of this invention will be described below with reference to the drawings. In FIG. 2, 10 is a high-speed frequency synthesizer that switches frequencies at high speed. 2 is an attenuator for adjusting the transmission output level; 3 is a power amplifier; 4a is a filter for blocking transmission waves during reception; 4b is a filter for removing unnecessary transmission waves; 5 is an antenna for transmitting and receiving; 6 is a receiver;
8 is a power supply for the amplifier.
次に動作について説明する。送信を行なう場
合、高速周波数合成器１０は送信信号周波数を設
定し送出する。送信信号はフイルタ４ａに伝達さ
れるが、信号はフイルタ４ａ通過帯域内の為に、
そのまま出力レベル調整用減衰器２へ送られ、レ
ベル調整される。この後、電力増幅器３にて増幅
された後、フイルタ４ｂにて送信不要波を除去し
空中線５より送出される。受信信号は、空中線５
でキヤツチし受信機６にて検波、再生が行なわれ
る。電源系統は送信、受信共に常時供給されてい
る。 Next, the operation will be explained. When transmitting, the high-speed frequency synthesizer 10 sets a transmission signal frequency and sends it out. The transmission signal is transmitted to the filter 4a, but since the signal is within the passband of the filter 4a,
The signal is sent as it is to the output level adjusting attenuator 2, where the level is adjusted. Thereafter, the signal is amplified by the power amplifier 3, and then removed by the filter 4b, and sent out from the antenna 5. The received signal is the antenna 5
The signal is caught by the receiver 6, and detected and reproduced by the receiver 6. The power supply system is constantly supplied for both transmission and reception.
第３図及び第４図に示すフイルタ４ａの特性と
送受信周波数との関係を説明する。フイルタ４ａ
の特性はカツトオフ周波数fcを持つLPFであり
（f1〜fn）は送受信装置に使用する周波数帯で、
fcとの関係はfc＞f1〜fnであり、送信時にはフイ
ルタ４ａは影響しない。次に受信時送信設定周波
数（fo）とfcとの関係はfo＞fcであり、受信時に
はフイルタ４ａはfoを阻止する働きをする。 The relationship between the characteristics of the filter 4a shown in FIGS. 3 and 4 and the transmitting/receiving frequency will be explained. Filter 4a
The characteristics of is an LPF with a cut-off frequency fc, and (f 1 ~ fn) is the frequency band used for the transmitter/receiver,
The relationship with fc is fc>f 1 to fn, and the filter 4a has no effect during transmission. Next, the relationship between the transmission setting frequency (fo) and fc at the time of reception is fo>fc, and the filter 4a functions to block fo at the time of reception.
第４図に示す如く、送信、受信を交互に繰り返
す場合、送信周波数は送信時にはf1〜fcの送信周
波数を設定し送信動作を行なう。受信時には周波
数をfoに切替え設定する為に、電力増幅器３への
電源を供給したままにおいても受信機への影響は
防止できる。 As shown in FIG. 4, when transmitting and receiving are alternately repeated, the transmitting frequency is set at f 1 to fc during transmitting, and the transmitting operation is performed. Since the frequency is switched and set to fo during reception, it is possible to prevent any influence on the receiver even if power is supplied to the power amplifier 3.
なお、上記実施例では、フイルタ４ａにLPF
（低域通過フイルタ）を設けたものを示したが、
用途によつてはHPF（高域通過フイルタ）又は
BEF（帯域阻止フイルタを設けてもよい。 In addition, in the above embodiment, the filter 4a is equipped with an LPF.
(low-pass filter) is shown, but
Depending on the application, HPF (high pass filter) or
BEF (A band rejection filter may be provided.
以上のように、この考案によれば、送信回路に
フイルタを入れ高速周波数合成器と組合せて構成
したので、送受信装置の高速化、すなわち送受信
能力の高い装置が得られる効果がある。
As described above, according to this invention, since a filter is provided in the transmitting circuit and combined with a high-speed frequency synthesizer, there is an effect that the transmitting/receiving device can be made faster, that is, a device with high transmitting/receiving ability can be obtained.
第１図は従来の送受信装置の構成図、第２図は
この考案の一実施例による送受信装置の構成図、
第３図はフイルタ４ａの送受信周波数と減衰量の
関係を示す特性図、第４図は送信、受信タイミン
グと設定周波数の関係を示す図である。
図において、１はVCO、２は減衰器、３は電
力増幅器、４，４ａ，４ｂはフイルタ、５は空中
線、６は受信機、７は周波数合成器、８は増幅器
用電源、９はスイツチ、１０は高速周波数合成器
である。なお、図中、同一符号は同一、又は相当
部分を示す。
Fig. 1 is a block diagram of a conventional transmitting/receiving device, and Fig. 2 is a block diagram of a transmitting/receiving device according to an embodiment of this invention.
FIG. 3 is a characteristic diagram showing the relationship between the transmitting/receiving frequency of the filter 4a and the attenuation amount, and FIG. 4 is a diagram showing the relationship between the transmitting/receiving timing and the set frequency. In the figure, 1 is a VCO, 2 is an attenuator, 3 is a power amplifier, 4, 4a, 4b are filters, 5 is an antenna, 6 is a receiver, 7 is a frequency synthesizer, 8 is a power supply for the amplifier, 9 is a switch, 10 is a high speed frequency synthesizer. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.
Claims (1)
置において、受信時に送信機の設定周波数を送信
用フイルタの帯域外に設定することにより、上記
送信用フイルタを減衰器として用いたことを特徴
とする送受信装置。 A high power transmitting/receiving device capable of controlling transmitting/receiving frequencies at high speed, characterized in that the transmitting filter is used as an attenuator by setting the set frequency of the transmitter outside the band of the transmitting filter during reception. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3192184U JPS60144342U (en) | 1984-03-05 | 1984-03-05 | Transmitting/receiving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3192184U JPS60144342U (en) | 1984-03-05 | 1984-03-05 | Transmitting/receiving device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60144342U JPS60144342U (en) | 1985-09-25 |
| JPH033007Y2 true JPH033007Y2 (en) | 1991-01-25 |
Family
ID=30532962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3192184U Granted JPS60144342U (en) | 1984-03-05 | 1984-03-05 | Transmitting/receiving device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60144342U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58200636A (en) * | 1982-05-19 | 1983-11-22 | Toshiba Corp | Branching filter |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56134819U (en) * | 1980-03-13 | 1981-10-13 | ||
| JPS58173919U (en) * | 1982-05-17 | 1983-11-21 | 日本電信電話株式会社 | power amplifier |
-
1984
- 1984-03-05 JP JP3192184U patent/JPS60144342U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58200636A (en) * | 1982-05-19 | 1983-11-22 | Toshiba Corp | Branching filter |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60144342U (en) | 1985-09-25 |
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