JPH0213021A - Transmitter-receiver with antenna trouble detecting function - Google Patents
Transmitter-receiver with antenna trouble detecting functionInfo
- Publication number
- JPH0213021A JPH0213021A JP63161054A JP16105488A JPH0213021A JP H0213021 A JPH0213021 A JP H0213021A JP 63161054 A JP63161054 A JP 63161054A JP 16105488 A JP16105488 A JP 16105488A JP H0213021 A JPH0213021 A JP H0213021A
- Authority
- JP
- Japan
- Prior art keywords
- antenna
- transmitter
- receiver
- transmission
- 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.)
- Granted
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 19
- 230000005684 electric field Effects 0.000 claims abstract description 12
- 238000001514 detection method Methods 0.000 claims description 4
- 238000004891 communication Methods 0.000 abstract description 6
- 230000005856 abnormality Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005562 fading Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
Landscapes
- Transceivers (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
- Radio Transmission System (AREA)
Abstract
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、ダイバーシチ受信を行う送受信機に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to a transceiver that performs diversity reception.
特に、受信機を利用してアンテナの故障を検出し、送信
出力を正常なアンテナに切り荘える機能を有する送受信
機に関する。In particular, the present invention relates to a transmitter/receiver having a function of detecting a failure of an antenna using a receiver and reducing transmission output to a normal antenna.
［従来の技術］
従来、ダイバーシチ受信を行う送受信装置は、送受を共
用する一つのアンテナと、補助的なダイバーシチ受信用
のアンテナとを具備していた。したがって、送受を行う
アンテナが故障した場合には、補助的なダイバーシチ受
信用のアンテナを用いて受信を行うことができた。[Prior Art] Conventionally, a transmitting/receiving device that performs diversity reception has been equipped with one antenna that is used for both transmission and reception, and an auxiliary antenna for diversity reception. Therefore, in the event that the transmitting/receiving antenna fails, reception can be performed using the auxiliary diversity receiving antenna.
また、信頼性を高める基地局については、手動により切
り替えを行っていた。In addition, base stations to improve reliability were manually switched.
［解決すべき課題］
上述した従来のダイバーシチ送受信装置では送受を共用
するアンテナの他に、補助的なダイバーシチ受信用のア
ンテナを具備していたにすぎないため、送受を行うアン
テナが故障した場合には、受信はできるが、送信はでき
ないという問題点を有していた。[Problems to be Solved] The conventional diversity transmitting/receiving device described above only has an antenna for shared transmission and reception, as well as an antenna for auxiliary diversity reception, so if the antenna for transmission and reception fails, had the problem that it was possible to receive data, but not to send data.
また、手動にて切り替えるシステムであったので、アン
テナの異常を発見するまでに時間がかかり、その間通信
ができないという問題点を有していた。Furthermore, since the system was a manual switching system, it took time to detect an abnormality in the antenna, and there was a problem in that communication could not be performed during that time.
本発明は上記の問題点にかんがみてなされたもので、一
つの送受共用のアンテナが故障した場合に、これを自動
的に検出して他の送受共用のアンテナに切り替えること
により、通信を確保することのできるアンテナ故障検出
機能付送受信機の提供を目的とする。The present invention has been made in view of the above-mentioned problems. When one antenna used for both transmission and reception fails, it is automatically detected and switched to another antenna used for both transmission and reception, thereby ensuring communication. The purpose of the present invention is to provide a transceiver with an antenna failure detection function that can detect antenna failure.
［課題の解決手段］
上記［１的を達成するために本発明のアンテナ故障検出
機能付送受信機は、三木以上の送受共用のアンテナと、
これらアンテナのうちの一つを送信用のアンテナとして
選択する送信切替スイッチと、前記アンテナのそれぞれ
の入力電界を一定時ｔｉｉｌ ｆｌ１４定し、各アンテ
ナの測定値の差が予め定めた値より大きくなったとき最
も人力電界の大きなアンテナを選択するように前記送信
切替スイッチを作動させる制御部とを備えた構成としで
ある。[Means for Solving the Problems] In order to achieve the above object [1], the transmitter/receiver with an antenna failure detection function of the present invention includes a transmitting/receiving antenna of Miki or higher,
A transmission selector switch selects one of these antennas as a transmitting antenna, and the input electric field of each of the antennas is fixed at a certain time until the difference between the measured values of each antenna is larger than a predetermined value. and a control section that operates the transmission changeover switch so as to select the antenna with the largest human-powered electric field when the antenna is turned on.
［実施例］
以下１本発明に係るアンテナ故障検出機能付送受信機の
一実施例について図面を参照して説明する。[Embodiment] An embodiment of a transceiver with an antenna failure detection function according to the present invention will be described below with reference to the drawings.
第１図は、実施例のブロック図である。FIG. 1 is a block diagram of an embodiment.
同図において、ｌａ、ｌｂはそれぞれ送受共用のアンテ
ナである。これらアンテナｌａ、ｌｂに入力された高周
波信号は、受信用ＢＰＦ２ａ。In the figure, la and lb are antennas used for both transmission and reception, respectively. The high frequency signals input to these antennas la and lb are sent to the receiving BPF 2a.
２ｂを通り、受信機３ａ、３ｂにそれぞれ入力される。2b, and are input to receivers 3a and 3b, respectively.
それぞれの受信機３ａ、３ｂにおける復調出力は、アン
テナｌａ、ｌｂの入力電界に応じた直ｌｉｔ電圧（Ｒ３
ＳＩと略す）を比較器４に出力する。比較器４は、受信
復調用切替スイッチ５を作動させ、入力電界の大きい方
の復調出力を選択して出力させる。The demodulated output in each receiver 3a, 3b is a direct lit voltage (R3
SI) is output to the comparator 4. The comparator 4 operates the reception demodulation switch 5 to select and output the demodulation output with the larger input electric field.
また、前記受信機３ａ、３ｂｃ７）Ｒ３ＳＩは、制御３
（１部６にも入力される。制御部６は、入力された受信
機３ａ、３ｂ（７）Ｒ３ＳＩを一定時間ｉＮ＋１定する
。そして、受信機３ａのＲ３５Ｉの値と、受信ｆｉ３ｂ
のＲ３５Ｉの値との間に大きな差があった場合、送信切
替スイッチ７を操作して、送信機８の出力を正常なアン
テナの方（すなわち、入力電界の大きい方）に切り替え
る。９は送信用ＢＰＦである。Further, the receivers 3a, 3bc7) R3SI control 3
(It is also input to the first part 6. The control part 6 fixes the input receivers 3a, 3b (7) R3SI by iN+1 for a certain period of time.Then, the value of R35I of the receiver 3a and the receiving fi3b
If there is a large difference between the value of R35I and the value of R35I, operate the transmission changeover switch 7 to switch the output of the transmitter 8 to the normal antenna (that is, the one with a larger input electric field). 9 is a transmission BPF.
なお、制御部６は、Ｒ３５Ｉを測定することにより、結
果としてアンテナの入力電界を測定していることになる
。また、制御部６にて一定時間測定することとしたのは
、移動通信に使用する場合、レーリーフェージングによ
り瞬時のＲ５５Ｉレベルが大きく変化するので、その影
響を受けないようにするためである。Note that by measuring R35I, the control unit 6 is measuring the input electric field of the antenna as a result. Furthermore, the reason why the control unit 6 measures for a certain period of time is to avoid being affected by Rayleigh fading, which causes a large change in the instantaneous R55I level when used for mobile communication.
このように本実施例は、ダーバーシチ受信機において、
各アンテナｌａ、ｌｂの入力電界を測定する機能を有し
、′Ａ１１Ｉ定した電界値をもとに送信機８に接続する
アンテナを選択することで、一つの送受共用のアンテナ
が故障した場合でも、これを自動的に検出して他の送受
共用のアンテナに切り替えて、通信を確保することがで
きる。In this way, in this embodiment, in the duplex receiver,
It has a function to measure the input electric field of each antenna la and lb, and by selecting the antenna to be connected to the transmitter 8 based on the electric field value determined by 'A11I, even if one antenna for both transmitting and receiving fails, , this can be automatically detected and switched to another antenna for both transmission and reception to ensure communication.
［発明の効果］
以上、説明したように本発明は、ダイバーシチ受信を行
う送受信機において、受信機能を積極的に利用すること
により、アンテナの異常を自動的に検出し、送信機出力
を切り替えることによって、通信を確保することができ
るという効果がある。[Effects of the Invention] As explained above, the present invention makes it possible to automatically detect an abnormality in the antenna and switch the transmitter output by actively utilizing the receiving function in a transmitter/receiver that performs diversity reception. This has the effect of ensuring communication.
第１図は本発明の一実施例のブロック図である。 ｌａ、ｌｂ：アンテナ ２ａ、２ｂ：受信用ＢＰＦ ３ａ、３ｂ：受信機 ４ ： 比較器 ５ ： 受信復調切替スイッチ 二制御部 ：送信切替スイッチ ：送信機 ：送信用ＢＰＦ FIG. 1 is a block diagram of one embodiment of the present invention. la, lb: antenna 2a, 2b: BPF for reception 3a, 3b: Receiver 4: comparator 5: Reception demodulation switch Two control parts : Transmission selector switch :Transmitter : BPF for transmission
Claims (1)
ちの一つを送信用のアンテナとして選択する送信切替ス
イッチと、前記アンテナのそれぞれの入力電界を一定時
間測定し、各アンテナの測定値の差が予め定めた値より
大きくなったとき、最も入力電界の大きなアンテナを選
択するように前記送信切替スイッチを作動させる制御部
とを備えたことを特徴とするアンテナ故障検出機能付送
受信機。Two or more antennas used for both transmission and reception, a transmission selector switch that selects one of these antennas as the transmission antenna, and the input electric field of each of the antennas is measured for a certain period of time, and the difference between the measured values of each antenna is A transmitter/receiver with an antenna failure detection function, characterized in that the transmitter/receiver is equipped with a control unit that operates the transmission changeover switch so as to select the antenna with the largest input electric field when the input electric field becomes larger than a predetermined value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63161054A JPH0681069B2 (en) | 1988-06-30 | 1988-06-30 | Transceiver with antenna failure detection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63161054A JPH0681069B2 (en) | 1988-06-30 | 1988-06-30 | Transceiver with antenna failure detection function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0213021A true JPH0213021A (en) | 1990-01-17 |
| JPH0681069B2 JPH0681069B2 (en) | 1994-10-12 |
Family
ID=15727733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63161054A Expired - Lifetime JPH0681069B2 (en) | 1988-06-30 | 1988-06-30 | Transceiver with antenna failure detection function |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0681069B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0446731U (en) * | 1990-08-23 | 1992-04-21 | ||
| US5970396A (en) * | 1996-07-19 | 1999-10-19 | Nec Corporation | Diversity receiver |
| US6253067B1 (en) | 1997-06-27 | 2001-06-26 | Nec Corporation | Transmitter/receiver having an antenna failure detection system |
| US9989094B2 (en) | 2014-03-12 | 2018-06-05 | Ntn Corporation | Wheel bearing apparatus |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5617529A (en) * | 1979-07-23 | 1981-02-19 | Mitsubishi Electric Corp | Transmitting/receiving device |
| JPS6243925A (en) * | 1985-08-21 | 1987-02-25 | Nec Corp | Fault detection system of diversity receiver |
-
1988
- 1988-06-30 JP JP63161054A patent/JPH0681069B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5617529A (en) * | 1979-07-23 | 1981-02-19 | Mitsubishi Electric Corp | Transmitting/receiving device |
| JPS6243925A (en) * | 1985-08-21 | 1987-02-25 | Nec Corp | Fault detection system of diversity receiver |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0446731U (en) * | 1990-08-23 | 1992-04-21 | ||
| US5970396A (en) * | 1996-07-19 | 1999-10-19 | Nec Corporation | Diversity receiver |
| US6253067B1 (en) | 1997-06-27 | 2001-06-26 | Nec Corporation | Transmitter/receiver having an antenna failure detection system |
| US9989094B2 (en) | 2014-03-12 | 2018-06-05 | Ntn Corporation | Wheel bearing apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0681069B2 (en) | 1994-10-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA1311802C (en) | Diversity antenna communication system | |
| JPH0213021A (en) | Transmitter-receiver with antenna trouble detecting function | |
| CA1249344A (en) | Radio receiver for carrying out self diagnosis without interference | |
| JPH056811B2 (en) | ||
| US5701590A (en) | Radio communication system for performing multi-channel access | |
| JPH0691485B2 (en) | Wireless communication device | |
| JPH11502076A (en) | Vehicle radio receiver | |
| JPH06315022A (en) | Switching method for antenna | |
| JPH054860B2 (en) | ||
| EP0829972A2 (en) | Radio communication unit and receiving method for diversity reception | |
| JPH10135873A (en) | Transmission output control system | |
| JPH07245577A (en) | Diversity communication equipment | |
| JP4070311B2 (en) | Wireless communication system | |
| JP3458140B2 (en) | Optimal reception frequency selection circuit | |
| JPH09312601A (en) | Diversity reception system | |
| JPH0888593A (en) | Switching system for diversity reception | |
| JPH09181663A (en) | Diversity communication method and its device | |
| JPH09284192A (en) | Diversity reception method and diversity receiver | |
| JPH10303795A (en) | Diversity receiver | |
| JPH01161925A (en) | Radio equipment | |
| JPS62165444A (en) | Space diversity receiving equipment | |
| JP2000049683A5 (en) | ||
| JP3002138U (en) | Multi-path countermeasure radio equipment | |
| JPH08163016A (en) | Diversity receiver | |
| JPH03127520A (en) | Diversity reception system |