JPS63280520A - Mobile radio equipment having frequency stabilizing function - Google Patents
Mobile radio equipment having frequency stabilizing functionInfo
- Publication number
- JPS63280520A JPS63280520A JP62114534A JP11453487A JPS63280520A JP S63280520 A JPS63280520 A JP S63280520A JP 62114534 A JP62114534 A JP 62114534A JP 11453487 A JP11453487 A JP 11453487A JP S63280520 A JPS63280520 A JP S63280520A
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- transmission
- reception
- synthesizer
- mobile radio
- 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
- 230000000087 stabilizing effect Effects 0.000 title description 3
- 230000005540 biological transmission Effects 0.000 claims abstract description 44
- 230000006641 stabilisation Effects 0.000 claims abstract description 12
- 238000011105 stabilization Methods 0.000 claims abstract description 12
- 238000005259 measurement Methods 0.000 claims description 3
- 238000010295 mobile communication Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 6
- 238000004891 communication Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- YVWNECBAHBJBSI-HZOWPXDZSA-N (2E,4E)-2,4,6-trimethyldeca-2,4-dienamide Chemical compound CCCCC(C)\C=C(/C)\C=C(/C)C(N)=O YVWNECBAHBJBSI-HZOWPXDZSA-N 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、例えば、ＵＨＦ帯の狭帯域移動通信のように
、角度変調を用い、かつ、搬送波ドリフトを極めて微小
に抑える必要のある通信方式において、自動的に搬送波
周波数を所定の値に制御する機能を有する移動無線機に
関するものである。Detailed Description of the Invention (Industrial Application Field) The present invention is applicable to communication systems that use angle modulation and require extremely small carrier wave drift, such as UHF narrowband mobile communications. The present invention relates to a mobile radio having a function of automatically controlling a carrier frequency to a predetermined value.
（従来の技術）
通信方式における搬送波ドリフトは伝送品質を著しく劣
化させる。多チャネル切り換え機能を有する移動無線機
において搬送波周波数を安定化する従来技術としては、
〔１〕周波数弁別器のＤＣ成分を周波数制御情報とする
ＡＦＣ，（２）安定な基地局送信波を受信して、この信
号をもとに、局部発振器にＰＬＬをかける等の技術があ
る。しかしながら、これらの技術を、フェージングを伴
った移動通信特有の移動無線伝播路において、極めて高
い搬送波周波数安定度を要求される通信方式に適用しよ
うとすることは特願昭６１−１６８００４で述べたよう
に非常な困難を伴う。(Prior Art) Carrier wave drift in communication systems significantly deteriorates transmission quality. Conventional technology for stabilizing the carrier frequency in mobile radio equipment with multi-channel switching function is as follows:
There are techniques such as [1] AFC using the DC component of a frequency discriminator as frequency control information, and (2) receiving a stable base station transmission wave and applying PLL to a local oscillator based on this signal. However, as stated in Japanese Patent Application No. 168004/1987, it is important to apply these technologies to communication systems that require extremely high carrier frequency stability in the mobile radio propagation path that is unique to mobile communication and is accompanied by fading. with great difficulty.
そこで特願昭６１−１６８００４ では、これを解決す
るための手段として、高安定な基地局送信波を受信し、
その周波数を正確に測定する方法を示し、特願昭６１−
１６８００５ において、移動無線機の周波数安定度を
飛躍的に向上させる手段を提案した。Therefore, in Japanese Patent Application No. 61-168004, as a means to solve this problem, we received highly stable base station transmission waves,
A method for accurately measuring the frequency is shown, and patent application 1986-
168005, we proposed a means to dramatically improve the frequency stability of mobile radio equipment.
第１図にその基本構成を示す。この構成においては、ア
ンテナ１．１より受信される安定な基地局送信波を受信
部１．２で周波数変換し、そのＩＦ比出力雑音除去手段
１．３を通過させ、周波数カウンタ１．４で測定し、そ
の結果が所定の値となるように基準発振器１．６を基準
発振器制御部１．５を用いて制御し、周波数シンセサイ
ザ１．７を基地局と同等の周波数安定度に実現するもの
である。また、１．７を、変調器１．８、ミクサ１．９
、電力増幅器１．１０からなる送信部で共用する移動無
線機においては、移動無線機の送信周波数安定度も安定
な基地局送信周波数安定度と同等とすることができる。Figure 1 shows its basic configuration. In this configuration, a stable base station transmission wave received from an antenna 1.1 is frequency-converted by a receiving section 1.2, passed through its IF ratio output noise removal means 1.3, and then is transmitted by a frequency counter 1.4. A device that controls the reference oscillator 1.6 using the reference oscillator control unit 1.5 so that the result becomes a predetermined value, and achieves the frequency stability of the frequency synthesizer 1.7 equivalent to that of the base station. It is. Also, 1.7, modulator 1.8, mixer 1.9
In a mobile radio device that is shared by a transmitting section consisting of a power amplifier 1.10, the transmission frequency stability of the mobile radio device can be made equal to the stable base station transmission frequency stability.
（発明が解決しようとする問題点）
ところで、送信スプリアスの減少、送受信周波数の設定
の自由度の大きさを考慮して、第２図に示すような、受
信部用シンセサイザ２．１、受信部用基準発振器２．２
、変調器を兼ねた送信部用シンセサイザ２．３、送信部
用基準発振器２．４を有する移動無線機が開発されてい
る。このような移動無線機には、特願昭６１−１６８０
０５ に示した周波数安定化回路を適用しても、受信用
基準発振器のみしか制御できないために第２図のように
周波数シンセサイザを２系列独立に有する移動無線機の
送信周波数を安定化することはできない。(Problems to be Solved by the Invention) By the way, in consideration of the reduction of transmission spurious and the degree of freedom in setting the transmission and reception frequencies, a synthesizer 2.1 for the reception section and a reception section as shown in FIG. Reference oscillator 2.2
A mobile radio device has been developed which includes a transmitter synthesizer 2.3 which also serves as a modulator, and a transmitter reference oscillator 2.4. For such mobile radio equipment, the patent application 1680-1980
Even if the frequency stabilization circuit shown in 05 is applied, it is only possible to control the reception reference oscillator, so it is difficult to stabilize the transmission frequency of a mobile radio that has two independent frequency synthesizer systems as shown in Figure 2. Can not.
（発明の目的）
本発明の目的は、搬送波ドリフトを極めて微小に抑える
必要のある、角度変調を用いた通信方式に供する移動無
線機において、送信系と受信系の２つの基準発振器の何
れも基地局の送信波と同等の安定度まで向上させる手段
を提供することにある。(Object of the Invention) An object of the present invention is to provide a mobile radio device for use in a communication system using angle modulation, in which carrier wave drift must be suppressed to an extremely small level. The object of the present invention is to provide a means for improving the stability to the same level as that of the station's transmitted waves.
（問題点を解決するための手段）
本発明は、送受信部で個別の基準発振器を用いる移動無
線機において、周波数安定化回路に、受信用シンセサイ
ザの基準発振器入力に切シ換えスイッチを設け、送信用
基準発振器あるいは受信用基準発振器のいずれか一方を
受信用シンセサイザに接続し、選択された基準発振器の
周波数安定化動作を行い、その後に先に選択されなかり
た基準発振器を受信用シンセサイザに接続し、周波数安
定化動作を行うことを特徴とする。(Means for Solving the Problems) The present invention provides a mobile radio device that uses separate reference oscillators in the transmitting and receiving sections. Connect either the reliable reference oscillator or the reception reference oscillator to the reception synthesizer, perform frequency stabilization of the selected reference oscillator, and then connect the reference oscillator that was not selected first to the reception synthesizer. It is characterized by performing frequency stabilization operation.
この発明を適用することによシ、送信部及び受信部で個
別の基準発振器を持つ移動無線機においても、送信周波
数及び受信周波数のいずれも高安定な基地局送信波の周
波数安定度と同等に安定化できることが従来技術と異な
る。By applying this invention, even in a mobile radio device having separate reference oscillators in the transmitting section and receiving section, both the transmitting frequency and the receiving frequency can be made to have the same frequency stability as the highly stable base station transmitted wave. It differs from conventional technology in that it can be stabilized.
（実施例−１）
第３図に実施例−１の構成を示す。３．１は受信用周波
数シンセサイザの制御入力を切シ換えるスイッチ（ＳＷ
−Ａ）、３．２は送信／受信基準発振器制御部、３．３
は基準発振器制御信号を切り換えるスイッチ（ＳＷ−Ｂ
）で３．２によシ制御される。(Example-1) FIG. 3 shows the configuration of Example-1. 3.1 is a switch (SW) that changes the control input of the receiving frequency synthesizer.
-A), 3.2 is the transmitting/receiving reference oscillator control section, 3.3
is the switch (SW-B) that changes the reference oscillator control signal.
) is controlled by 3.2.
３．４は送信用基準発振器制御信号をサンプル及びホー
ルドするサンプル／ホールド回路で３．２によシ制御さ
れる。３．５は受信用基準発振器制御信号をサンプル及
びホールドするサンプル／ホールド回路で３．２により
制御される。これらが、第１図及び第２図に追加され、
第３図を構成している。3.4 is a sample/hold circuit that samples and holds the transmission reference oscillator control signal, and is controlled by 3.2. 3.5 is a sample/hold circuit that samples and holds the reception reference oscillator control signal, and is controlled by 3.2. These have been added to Figures 1 and 2,
It constitutes Figure 3.
以下、この構成を持つ移動無線機の周波数安定化動作に
ついて説明する。基準発振器を送受信で個別に有する場
合においても、通常は２．２と２．４は同一の発振周波
数を有する基準発振器が用いられる。基準発振器の出力
を分周して、それを基準信号周波数として利用する方法
では、見掛は上、基準発振器の周波数を送信と受信で異
ならせることが出来るが、本質的には第１図、第２図、
第３図と同じと考えられる。The frequency stabilization operation of the mobile radio device having this configuration will be explained below. Even when separate reference oscillators are provided for transmission and reception, reference oscillators having the same oscillation frequency are usually used for 2.2 and 2.4. In the method of dividing the output of the reference oscillator and using it as the reference signal frequency, it appears that the frequency of the reference oscillator can be made different for transmission and reception, but essentially the frequency shown in Fig. 1, Figure 2,
It is considered to be the same as Figure 3.
まず、３．２は３．１及び３．３をａ側に切シ換え、受
信用基準発振器を特願昭６１−１６８００５に示した方
法で基地局送信波を受信しながら、受信用基準発振器の
発振周波数を基地局送信波と同等な程度まで安定化する
。この過程においては、３．５は基準発振器制御信号を
サンプルし、そのまま、２．２に受けわたす。受信用基
準発振器の安定化が終了すると、３．２は３．５を制御
し、基準発振器制御信号情報をホールドする。次に、３
．２は３．１及び３．３をｂ側に切シ換え、送信用基準
発振器２．４の出力を用いて、基地局送信波を受信しな
がら、前述と同様な動作により、送信用サンプルホール
ド回路３．４を制御し、送信用基準発振器の周波数安定
度を基地局送信波と同等な程度に安定化する。送信用基
準発掘器の３．４の安定化が終了すると、３．２は３．
４を制御して送信用基準発振器の周波数制御情報をホー
ルドする。First, 3.2 switches 3.1 and 3.3 to side a, and while receiving the base station transmission wave using the method shown in Japanese Patent Application No. 61-168005, The oscillation frequency of the base station is stabilized to the same degree as the base station transmission wave. In this process, 3.5 samples the reference oscillator control signal and passes it as is to 2.2. When the stabilization of the receiving reference oscillator is completed, 3.2 controls 3.5 and holds the reference oscillator control signal information. Next, 3
．． 2 switches 3.1 and 3.3 to the b side, and uses the output of the transmission reference oscillator 2.4 to perform the same operation as described above while receiving the base station transmission wave. The circuit 3.4 is controlled to stabilize the frequency stability of the transmission reference oscillator to the same degree as the base station transmission wave. When the stabilization of 3.4 of the transmitting reference excavator is completed, 3.2 becomes 3.
4 to hold the frequency control information of the transmission reference oscillator.
以上の送信ｉ＋＋と受信側基準発振器の安定化動作の順
序は逆でも良いし、３．２が３．４と３．５に対する制
御端子を有し、３．３の５Ｗ−Ｂが省略されていても良
いことは明らかである。また特願昭６１−１６８００４
で示したように、周波数カウンタのタイムベースは送受
例れの基準発振器を基準としても同様な効果が得られる
。以上の構成は特願昭６１−１６８００４に示したよう
に、低消費成力のＣＭＯＳディジタルＩＣ化が容易に達
成でき、本発明の無線機自体は通常の周波数安定機能を
有さない無線機に比べて特に大型化するわけでない。The above stabilizing operation order of the transmitting i++ and the receiving side reference oscillator may be reversed, or 3.2 has control terminals for 3.4 and 3.5, and 5W-B of 3.3 is omitted. It is clear that it is possible. Also, patent application No. 61-168004
As shown in , the same effect can be obtained even if the time base of the frequency counter is based on the reference oscillator of the transmitter/receiver example. As shown in Japanese Patent Application No. 61-168004, the above configuration can easily be implemented as a CMOS digital IC with low power consumption, and the radio device itself of the present invention can be used as a radio device that does not have a normal frequency stabilization function. It is not particularly large in comparison.
このように、本実施例の効果として、従来は不可能であ
った、送信及び受信周波数の安定化を実現できる。As described above, as an effect of this embodiment, it is possible to achieve stabilization of transmission and reception frequencies, which was previously impossible.
また、特願昭６１−≠穐０４で述べた、周波数測定精度
をさらに高める方式を本発明に適用出来ることは言う寸
でもない。Furthermore, it is needless to say that the method described in Japanese Patent Application No. 61-≠Aki 04, which further improves frequency measurement accuracy, can be applied to the present invention.
（実施例−２）
送受個別に基準発振器を有する利点の一つとして、変調
周波数特性の改善のために、送信用基準発振器にも変調
をかけることができる。即ち、第４図において変調信号
処理回路４．１は変調１西号をＣとｄに分け、ｄは送信
用周波数シンセサイザて入力され、Ｃは点線の部分を通
らずに２．３に入力される。この構成の移動熱？Ｍ機に
実施例−１を適用するためには、点線内に加算器４．２
を加え、・１．１からの変調信号と３．４からの送信用
基準発振器制御信号を加算し、２．３の制御信号人力ｅ
に入力する。その他の構成は第３図と同等となる。(Example 2) One of the advantages of having separate reference oscillators for transmitting and receiving is that modulation can also be applied to the transmitting reference oscillator in order to improve modulation frequency characteristics. That is, in FIG. 4, the modulation signal processing circuit 4.1 divides the modulation 1 west signal into C and d, d is inputted to the transmission frequency synthesizer, and C is inputted to 2.3 without passing through the dotted line part. Ru. Transfer heat in this configuration? In order to apply Example-1 to M machine, adder 4.2 is shown inside the dotted line.
Add the modulation signal from 1.1 and the transmission reference oscillator control signal from 3.4, and add the control signal from 2.3
Enter. The other configurations are the same as in FIG. 3.
ここで、送信用基準発振器の出力信号ｆ４ま角度変調さ
れていることになるが、受信用シンセサイザの基準発振
器として使用する場合は変調信号を入力しないので、特
に問題は生じない。この時、電力増幅器の電源をｏｆｆ
にすること等により不要の送信を行っていないことは言
うまでもない。Here, the output signal f4 of the transmission reference oscillator is also angle-modulated, but when used as the reference oscillator of the reception synthesizer, no particular problem arises because no modulation signal is input. At this time, turn off the power amplifier
Needless to say, unnecessary transmissions are not performed by doing the following.
（発明の効果）
送信と受信で個別の基準発振器を有する移動無線機は、
送信スプリアス特性、送信周波数特性等の諸伝送特性を
高度に保ちつつ、送受信周波数間隔が異なる方式に適用
することが可能である。以上説明したように、本発明は
送信と受信で個別の基準発振器を有する移動無線機の送
受信周波数を安定化することができるので、種々の送受
信周波数構成に容易に適用可能で、極めて高い搬送波周
波数の安定度を有する移動無線機を小型、安価に提供す
るうえで、極めて有効である。(Effect of the invention) A mobile radio device having separate reference oscillators for transmission and reception has the following advantages:
It is possible to apply the present invention to systems with different transmission and reception frequency intervals while maintaining high transmission characteristics such as transmission spurious characteristics and transmission frequency characteristics. As explained above, the present invention can stabilize the transmitting and receiving frequencies of a mobile radio having separate reference oscillators for transmitting and receiving, so it can be easily applied to various transmitting and receiving frequency configurations, and can be applied to extremely high carrier wave frequencies. This is extremely effective in providing a small and inexpensive mobile radio device with stability of .
第１図は周波数安定化機能を有する従来の移動無線機で
ある。
第２図は送信及び受信で個別の基準発振器を有する従来
の移動無線機である。
第３図囚は本発明の実施例であって、送信及び受信で個
別の基準発振器を有し、送信及び受信のいずれも基地局
送信周波数の安定度と同等に安定化できる移動無線機で
ある。
第３図（Ｂ）は周波数シンセサイザのプロンク図である
。
第４図は本発明の実施例であって、送信及び受信で個別
の基準発振器を有し、送信用基準発振器に変調をかける
構成の移動無線機である。
１．１・・・アンテナ、１．２・・・受信部、１．３・
・・雑音除去手段、１．４・・・周波数カウンタ、１、
訃・・基準発振器、１．６・・・基準発振器制御部、１
．７・・・周波数シンセサイザ、■、計・・変調器、１
．９・・・ミクサ、１．１０ ・・・電力増幅器、２．
１・・−受信用周波数シンセサイザ、２．２・・・受信
用基準発振器、
２．３・・・送信用周波数シンセサイザ、２．４・・・
送信用基準発振器、
３．１・・・スイッチ（ＳＷ−Ａ）
３．２・・・送信／受信基準発振器制御部、３．３・・
・スイッチ（ＳＷ−Ｂ）
３．４・・・送信用サンプルホールド回路、３、訃・・
受信用サンプルホールド回路、４．１・・・変調信号処
理回路、４．２・・・加算器。FIG. 1 shows a conventional mobile radio having a frequency stabilization function. FIG. 2 is a conventional mobile radio having separate reference oscillators for transmitting and receiving. The image in Figure 3 is an embodiment of the present invention, and is a mobile radio device that has separate reference oscillators for transmission and reception, and can stabilize both transmission and reception to the same level as the stability of the base station transmission frequency. . FIG. 3(B) is a Pronk diagram of the frequency synthesizer. FIG. 4 shows an embodiment of the present invention, which is a mobile radio device having separate reference oscillators for transmitting and receiving, and modulating the transmitting reference oscillator. 1.1... Antenna, 1.2... Receiving section, 1.3.
...Noise removal means, 1.4...Frequency counter, 1,
Death...Reference oscillator, 1.6...Reference oscillator control section, 1
．． 7... Frequency synthesizer, ■, Meter... Modulator, 1
．． 9... Mixer, 1.10... Power amplifier, 2.
1... - Frequency synthesizer for reception, 2.2... Reference oscillator for reception, 2.3... Frequency synthesizer for transmission, 2.4...
Transmission reference oscillator, 3.1... Switch (SW-A) 3.2... Transmission/reception reference oscillator control section, 3.3...
・Switch (SW-B) 3.4... Sample and hold circuit for transmission, 3.
Reception sample hold circuit, 4.1... Modulation signal processing circuit, 4.2... Adder.
Claims (1)
機が、送信周波数を定める送信部発振器として１つの周
波数シンセサイザを有し、受信周波数を定める受信部局
部発振器として１つの周波数シンセサイザを有し、前記
２つのシンセサイザの基準発振器を独立に２ケ有し、受
信周波数を測定する周波数測定回路と、その出力に接続
される基準発振器制御回路と、該制御部の出力を選択的
にサンプルホールドして前記２つの基準発振器を各々制
御する受信用サンプルホールド回路及び送信用サンプル
ホールド回路と、受信部の周波数シンセサイザの制御入
力として２つの基準発振器の出力の一方を選択するスイ
ッチとを有することを特徴とする、周波数安定機能を有
する移動無線機。A multi-channel radio device in a mobile communication system using angle modulation has one frequency synthesizer as a transmitter oscillator that determines a transmission frequency, and one frequency synthesizer as a receiver local oscillator that determines a reception frequency, It has two independent reference oscillators for each synthesizer, a frequency measurement circuit that measures the received frequency, a reference oscillator control circuit connected to the output of the frequency measurement circuit, and a reference oscillator control circuit that selectively samples and holds the output of the control section. A receiving sample-and-hold circuit and a transmitting sample-and-hold circuit that control two reference oscillators, respectively, and a switch that selects one of the outputs of the two reference oscillators as a control input for a frequency synthesizer of the receiving section. Mobile radio equipment with frequency stabilization function.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62114534A JP2517963B2 (en) | 1987-05-13 | 1987-05-13 | Mobile radio with frequency stabilization function |
| US07/072,819 US4817197A (en) | 1986-07-18 | 1987-07-13 | Mobile communication apparatus |
| DE3750757T DE3750757T2 (en) | 1986-07-18 | 1987-07-17 | Receiver arrangement for angle-modulated signals. |
| EP87306371A EP0253680B1 (en) | 1986-07-18 | 1987-07-17 | Angle modulated signal receiving apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62114534A JP2517963B2 (en) | 1987-05-13 | 1987-05-13 | Mobile radio with frequency stabilization function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63280520A true JPS63280520A (en) | 1988-11-17 |
| JP2517963B2 JP2517963B2 (en) | 1996-07-24 |
Family
ID=14640162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62114534A Expired - Fee Related JP2517963B2 (en) | 1986-07-18 | 1987-05-13 | Mobile radio with frequency stabilization function |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2517963B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996001545A1 (en) * | 1994-07-06 | 1996-01-18 | Ntt Mobile Communications Network Inc. | Mobile communication system using base station frequency correcting method |
-
1987
- 1987-05-13 JP JP62114534A patent/JP2517963B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996001545A1 (en) * | 1994-07-06 | 1996-01-18 | Ntt Mobile Communications Network Inc. | Mobile communication system using base station frequency correcting method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2517963B2 (en) | 1996-07-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |