JPH0470196A - Remote control transmission circuit - Google Patents

Remote control transmission circuit

Info

Publication number
JPH0470196A
JPH0470196A JP2182311A JP18231190A JPH0470196A JP H0470196 A JPH0470196 A JP H0470196A JP 2182311 A JP2182311 A JP 2182311A JP 18231190 A JP18231190 A JP 18231190A JP H0470196 A JPH0470196 A JP H0470196A
Authority
JP
Japan
Prior art keywords
circuit
transmission
transistor
high frequency
low
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
Application number
JP2182311A
Other languages
Japanese (ja)
Inventor
Kensuke Fukui
福井 憲介
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP2182311A priority Critical patent/JPH0470196A/en
Publication of JPH0470196A publication Critical patent/JPH0470196A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To obtain a small remote transmission circuit whose transmission distance is long by connecting a high frequency tuning circuit composed of a transmission inductance and a capacitor to the collector of a transistor, connecting a switching element to an emitter and connecting a low frequency transmission circuit with a wide band width to a base. CONSTITUTION:When the constant voltage of 6V is impressed on the high frequency turning circuit and the current of 400KHz is caused to flow in the base of the transistor 1 from the low frequency transmission circuit 12, the high frequency tuning circuit 7 is originated and the transmission inductance 3 transmits radio when remote controlling IC9 turns on the switching transistor 8. The transmitted radio wave is diffused with 300MHz as a center. If a receiver can receive all diffused radio waves it can receive large power even if the peak value of transmitted radio wave is low. Thus, the transmission distance can be prolonged even if the radio wave has a low peak value.

Description

【発明の詳細な説明】 (イ)産業上の利用分計 本考案はスペクトラム拡散を使用したリモートコントロ
ール送信器に関する。
DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application The present invention relates to a remote control transmitter using spread spectrum.

(ロ)従来の技術 従来のリモートコントロール送信回路の多くは、第3図
に示す如く、ある波長に鋭いピーク値を持つ単一周波数
の電波を発信するようにしているが、法規制の関係上ピ
ーク値の小さい微弱電波にしているので、送信距離が短
い欠点がある。
(B) Conventional technology Most conventional remote control transmitter circuits transmit radio waves with a single frequency that has a sharp peak value at a certain wavelength, as shown in Figure 3, but due to legal regulations, Since it uses weak radio waves with a small peak value, the transmission distance is short.

(ハ)発明が解決しようとする課題 このような欠点を解消するために、ピーク値が小さくと
6送信距離の長いスペクトラム発信回路が考えられてい
るが、本案は簡単な構成によってスペクトラム発信がで
きるようにしたもので、それによって小型で送信距離の
長いリモート送信回路を提供するものである。
(c) Problems to be solved by the invention In order to eliminate these drawbacks, a spectrum transmitting circuit with a small peak value and a long transmission distance has been considered, but the present invention can transmit a spectrum with a simple configuration. This provides a remote transmission circuit that is compact and has a long transmission distance.

(ニ)課題を解決するための手段 本案は、トランジスタのコレクタに、送信用インダクタ
ンスとコンデンサよりなる高周波同調回路を接続すると
共に、前記トランジスタのエミッタにスイッチング素子
を接続し、更にベースに帯域幅の広い低周波発信回路を
接続したものである。
(d) Means for solving the problem The present proposal connects a high frequency tuning circuit consisting of a transmitting inductance and a capacitor to the collector of the transistor, connects a switching element to the emitter of the transistor, and further connects a switching element to the base of the transistor. It is connected to a wide low frequency oscillation circuit.

(ホ)作用 トランジスタのベースに、帯域幅の広い低周波発信回路
を接続しているので、送信電波の周波数スペクトルが拡
散され、これによって、スペクトルのピーク値が小さく
とも、全スペクトルを合計すると電力値が大きくなり、
送信距離を長くすることができる。
(e) Since a low-frequency oscillation circuit with a wide bandwidth is connected to the base of the working transistor, the frequency spectrum of the transmitted radio wave is spread. The value increases,
Transmission distance can be increased.

(へ)実施例 図に基づいて説明すると、(1)は再生コンデンサ(2
)をエミッタ・コレクタ間に接続したトランジスタで、
そのコレクタ側には送信用インダクタンス(3)とコン
デンサ(4)(5)(6)からなる3゜OM HzのS
;周波同調回路(7)を接続すると共(二、エミンタ側
には、スイッチングトランジスタ(8)を1妾続し、該
スイッチングトランジスタの・く−スにはリモコンIc
(9)を接続している。又前記トランジスタ(1)のベ
ース(こ(ま、コンデンサ(10)と抵抗(11)を介
して帯域幅の広い400KHz低周波発信回路(12)
を接続している。
(f) To explain based on the example diagram, (1) is a regenerative capacitor (2
) is connected between emitter and collector,
On the collector side, there is a 3゜OM Hz S
A frequency tuning circuit (7) is connected (2. A switching transistor (8) is connected to the eminter side, and a remote control IC is connected to the side of the switching transistor.
(9) is connected. Also, a wide bandwidth 400KHz low frequency oscillation circuit (12) is connected to the base of the transistor (1) via a capacitor (10) and a resistor (11).
are connected.

以上の構成に於て、高周波同調回路に6〜′の定電圧を
印加すると共に、低周波発信回路(12)から[・ラン
ジメタ(1)のベースに400KHzの電流を流すと、
リモコンIC(9)によってスイッチングトランジスタ
(8)がオンとなった時に5高周波同調回路(7)が発
信し、送信用インダクタンス(3)から図示しない同調
トランス及びアンテナを通して送信する。この送信され
る電波は300 MHzを中心にして拡散しており、拡
散し、た電波の全てを受信できる受信器であれば、送信
電波のピーク値は低くとも大きな電力を受けることがで
きる。従ってピーク値の低い電波であっても送信距離を
長くすることができる。
In the above configuration, when a constant voltage of 6~' is applied to the high frequency tuning circuit and a current of 400 KHz is passed from the low frequency oscillation circuit (12) to the base of the range meter (1),
When the switching transistor (8) is turned on by the remote control IC (9), the high frequency tuning circuit (7) emits a signal, which is transmitted from the transmitting inductance (3) through a tuning transformer and an antenna (not shown). These transmitted radio waves are spread around 300 MHz, and a receiver that can receive all of the spread radio waves can receive large amounts of power even if the peak value of the transmitted radio waves is low. Therefore, even if a radio wave has a low peak value, the transmission distance can be increased.

(ト)発明の効果 以上の如く本案は、簡単な回路で送信距離を長くするこ
とができ、また逆に言えば、送信距離が同じであれば電
波のピーク値を小さくすることができるので、法規制の
範囲内で最大の送信距離を得ることができる。
(G) Effects of the invention As described above, the present invention can increase the transmission distance with a simple circuit, and conversely, if the transmission distance is the same, the peak value of radio waves can be reduced. Maximum transmission distance can be obtained within the legal regulations.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本案のリモートコントロール送信回路図、第2
図は同回路による送信電波のスペクトル図、第3図は従
来の単一周波送信回路によるスペクトル図である。 (1)・・・トランジスタ。 (3)・・・送信用インダクタンス (4)(5)(6)・・・コンデンサ、(7)・高周波
同調回路、 (8)・・スイッチングトランジスタ、(12)・・・
低周波発信回路。
Figure 1 is the remote control transmission circuit diagram of the present proposal, Figure 2
The figure is a spectrum diagram of radio waves transmitted by the same circuit, and FIG. 3 is a spectrum diagram of a conventional single frequency transmitter circuit. (1)...Transistor. (3)... Transmission inductance (4) (5) (6)... Capacitor, (7) High frequency tuning circuit, (8)... Switching transistor, (12)...
Low frequency oscillation circuit.

Claims (1)

【特許請求の範囲】[Claims] トランジスタのコレクタに、送信用インダクタンスとコ
ンデンサよりなる高周波同調回路を接続すると共に、前
記トランジスタのエミッタにスイッチング素子を接続し
、更にベースに帯域幅の広い低周波発信回路を接続した
ことを特徴とするリモートコントロール送信回路。
A high frequency tuning circuit consisting of a transmitting inductance and a capacitor is connected to the collector of the transistor, a switching element is connected to the emitter of the transistor, and a low frequency oscillation circuit with a wide bandwidth is connected to the base. remote control transmission circuit.
JP2182311A 1990-07-10 1990-07-10 Remote control transmission circuit Pending JPH0470196A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2182311A JPH0470196A (en) 1990-07-10 1990-07-10 Remote control transmission circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2182311A JPH0470196A (en) 1990-07-10 1990-07-10 Remote control transmission circuit

Publications (1)

Publication Number Publication Date
JPH0470196A true JPH0470196A (en) 1992-03-05

Family

ID=16116084

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2182311A Pending JPH0470196A (en) 1990-07-10 1990-07-10 Remote control transmission circuit

Country Status (1)

Country Link
JP (1) JPH0470196A (en)

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