JPS60249436A - Input switching device of receiver - Google Patents
Input switching device of receiverInfo
- Publication number
- JPS60249436A JPS60249436A JP10583084A JP10583084A JPS60249436A JP S60249436 A JPS60249436 A JP S60249436A JP 10583084 A JP10583084 A JP 10583084A JP 10583084 A JP10583084 A JP 10583084A JP S60249436 A JPS60249436 A JP S60249436A
- Authority
- JP
- Japan
- Prior art keywords
- band
- vhf
- vhf band
- high frequency
- receiver
- 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
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/18—Input circuits, e.g. for coupling to an antenna or a transmission line
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Noise Elimination (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明はＨＦ帯とＶＨＦ帯とを受信する受信機の入力切
換装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an input switching device for a receiver that receives an HF band and a VHF band.
従来例の構成とその問題点
一般に、ＨＦ帯とＶＨＦ帯ヲ受信するラジオ受信機はそ
ｎそれの周波数帯を受信する際、他の周波数帯の電波防
害を防止するべく種々の方法が提案されている。Conventional configurations and their problems In general, when radio receivers receive HF and VHF bands, various methods have been proposed to prevent radio wave damage from other frequency bands. has been done.
以下に従来の受信機の人力切換装置について説明する。A conventional manual switching device for a receiver will be described below.
第１図は従来の受信機の入力切換装置の回路図であり、
１はアンテナ入力端子、２はＨＦ帯とＶＨＦ帯の切換ス
イッチ、３，４はＶＨＦ帯に調整されたバンドパスフィ
ルタを構成する並列及び直列共振回路、６はバイアス抵
抗、６はＶＨＦ帯の高周波増幅用トランジスタ、７はＶ
ＨＦ帯に共振周波数をもつ並列共振回路、８はＨＦ帯の
高周波増幅用トランジスタである。FIG. 1 is a circuit diagram of a conventional receiver input switching device.
1 is an antenna input terminal, 2 is a selector switch between the HF band and VHF band, 3 and 4 are parallel and series resonant circuits that constitute a bandpass filter adjusted to the VHF band, 6 is a bias resistor, and 6 is a high frequency band in the VHF band. Amplification transistor, 7 is V
A parallel resonant circuit having a resonant frequency in the HF band, and 8 a transistor for high frequency amplification in the HF band.
以上のように構成された受信機の入力切換装置において
、壕ず、ＨＦおよびＶＨＦ帯の信号はアンテナ入力端子
１より切換スイッチ２にてＨＦ帯。In the receiver input switching device configured as described above, signals in the HF and VHF bands are switched from the antenna input terminal 1 to the selector switch 2 to switch to the HF band.
ＶＨＦ帯のそれぞれの高周波増幅回路へ接続されるっ例
えは第１図ではｖＨＦ帯の方へ接続されている。ＶＨＦ
ＨＦ帯のときは、池の周波数帯の強振回路４．並列共振
回路３から成るバンドパスフィルタにて良好な受信状態
を確保しているうまた、１−ＩＦ帯金受信するときは、
特にＶＨＦ帯の強力な信号の飛び込みを防止するべくコ
イルおよびコンデンサから成る並列共振回路７’１ＶＨ
Ｆ帯に共振させてＶＨＦ帯の信号のみを減衰し、受信す
るように構成している。The connection to each high frequency amplifier circuit in the VHF band is, for example, connected to the vHF band in FIG. VHF
When in the HF band, a strong vibration circuit in the frequency band 4. A bandpass filter consisting of a parallel resonant circuit 3 ensures good reception conditions.Also, when receiving the 1-IF band,
Parallel resonant circuit 7'1VH consisting of a coil and a capacitor to prevent the intrusion of strong signals, especially in the VHF band.
It is configured to resonate in the F band to attenuate and receive only VHF band signals.
しかしながら、上記の従来の構成では、ＨＦ帯とＶＨＦ
帯とにそれぞれ並列共振回路３．７を構成しなければな
らず、近年要求されている小型化製品を設計する際に、
省スペースあるいはコストアンプ等の種々の問題点を有
していた。However, in the above conventional configuration, the HF band and VHF band
Parallel resonant circuits must be constructed in each band, and when designing miniaturized products that are required in recent years,
This has had various problems such as space saving and cost amplifier.
発明の目的
本発明は上記従来の間１点を解消するもので、ＨＦ帯及
びＶＨＦ帯のそれぞれの強力な信号に防害されることな
く良好な受信が出来る受信機の入力切換装置を提供する
ことを目的とする。OBJECTS OF THE INVENTION The present invention solves one of the problems mentioned above in the prior art, and provides an input switching device for a receiver that allows good reception without being interfered with by the strong signals of the HF band and VHF band. With the goal.
発明の構成
本発明の受信機の入力切換装置は、ＶＨＦ帯の入力に接
続したバンドパスフィルタ全構成する並列共振回路を切
換スイッチを介してＨＦ帯の高周波増幅回路に切換え接
続するように構成したことにより、それぞれの強力な信
号に防害されることなく良好な受信を実現できるもので
ある。Structure of the Invention The receiver input switching device of the present invention is configured to switch and connect the parallel resonant circuit, which constitutes all the bandpass filters connected to the VHF band input, to the HF band high frequency amplification circuit via a changeover switch. This makes it possible to achieve good reception without being interfered with by each strong signal.
実施例の説明
第２図は本発明の一実施例を示す受信機の入力切換装置
の回路図である。第２囚において、１１はアンテナ入力
端子、１２．１３はＶＨＦ帯に調整されたバンドパスフ
ィルタを構成する並列及び直列共振回路、１４はバイア
ス抵抗、１５はＶＨＦ帯の高周波増幅用トランジスタ、
１６はＶＨＦ帯とＨＦ帯の切換スイッチ、１７はＨＦ帯
の高周波増幅用トランジスタである。DESCRIPTION OF EMBODIMENTS FIG. 2 is a circuit diagram of an input switching device for a receiver showing an embodiment of the present invention. In the second prisoner, 11 is an antenna input terminal, 12.13 is a parallel and series resonant circuit that constitutes a bandpass filter adjusted to the VHF band, 14 is a bias resistor, 15 is a transistor for high frequency amplification in the VHF band,
16 is a changeover switch between the VHF band and HF band, and 17 is a transistor for high frequency amplification in the HF band.
以上のように構成された本実施例の受信機の入力切換装
置において、寸ず、受信機がＶＨＦ帯を受信する際、切
換スイッチ６はアースに接続される。この状態では、バ
ンドパスフィルタは直列共振回路１３と並列共振回路１
２で構成されており、性能は従来のものと変わりがない
。次に、ＨＦ帯を受信する場合を考えてみる。（の際、
切換スイッチ１６はＨＦ帯の高周波増幅用トランジスタ
１７に接続される。切換スイッチ１６の他方ばＶＨＦ帯
の並列共振回路１２に接続されている。ＨＦ帯の信号は
アンテナ入力端子１よりＶＨＦ帯のバンドパスフィルタ
を構成する直列共振回路１３と並列共振回路１２の接続
点１で来ると、直列共振回路１３はｆ（Ｆ帯でインピー
ダンスが高くなるために直列共振回路１３に流れず、全
て並列共振回路側１２のみへ流入する。マタ、この並列
回路１２はＶＨＦ帯に共振しているため、ＶＨＦ帯の強
力な信号は阻１Ｆされ、ＨＦ帯の信号のみが高周波増幅
用トランジスタ１７へ加えられる。このため、ＨＦ帯を
受信する際にＶＨＦ帯の強力な信号に防害されることな
く良好な受信が出来るすぐれた受信機の入力切換装置を
実現することができるものである。In the receiver input switching device of this embodiment configured as described above, when the receiver receives the VHF band, the changeover switch 6 is connected to ground. In this state, the bandpass filter has a series resonant circuit 13 and a parallel resonant circuit 1.
2, and the performance is the same as the conventional one. Next, consider the case of receiving the HF band. (When
The changeover switch 16 is connected to a high frequency amplification transistor 17 in the HF band. The other end of the changeover switch 16 is connected to the VHF band parallel resonant circuit 12. When the HF band signal comes from the antenna input terminal 1 to the connection point 1 between the series resonant circuit 13 and the parallel resonant circuit 12 that constitute the VHF band bandpass filter, the series resonant circuit 13 has an impedance of f (high impedance in the F band). Therefore, it does not flow into the series resonant circuit 13, and all flows only into the parallel resonant circuit 12. Since this parallel circuit 12 resonates in the VHF band, strong signals in the VHF band are blocked by 1F, and the HF band Only this signal is applied to the high-frequency amplification transistor 17. Therefore, an excellent receiver input switching device is realized that can receive good reception without being interfered with by the strong signals of the VHF band when receiving the HF band. It is something that can be done.
発明の効果
以上のように本発明によれば、ＶＨＦ帯の人力に接続し
たバンドパスフィルタの並列共振回路を切換スイッチを
介してＨＦ帯の高周波増幅回路に切換え接続するように
構成したので、少ない部品構成でそれぞれの受信周波数
帯を強力な信号から防害されることなく良好な受信状態
を作り出すことが出来る優れた受信機の入力切換装置を
実現出来るものである。Effects of the Invention As described above, according to the present invention, the parallel resonant circuit of the bandpass filter connected to the human power in the VHF band is configured to be switched and connected to the high frequency amplification circuit in the HF band via the changeover switch. It is possible to realize an excellent receiver input switching device that can create a good reception condition in each reception frequency band without being damaged by strong signals by using a component configuration.
第１図は従来の受信機の人力切換装置の回路図、第２図
は本発明の一実施例を示す・受信機の入力切換装置の回
路図である。
１１−・・・・アンテナ入力端子、１２．１３・・・・
ＶＨＦ帯のバンドパスフィルタを構成する並列及び直列
共振回路、１４・・・・・バイアス抵抗、１６・・・・
ＶＨＦＨＦ需用高周波増幅トランジスタ・・・・周波数
切換スイッチ、７ ・・・ＨＦ帯用高周波増幅トランジ
スタっFIG. 1 is a circuit diagram of a conventional manual switching device for a receiver, and FIG. 2 is a circuit diagram of an input switching device for a receiver showing an embodiment of the present invention. 11-... Antenna input terminal, 12.13...
Parallel and series resonant circuit constituting a VHF band band pass filter, 14...Bias resistor, 16...
VHFHF high frequency amplification transistor for use...Frequency selection switch, 7...High frequency amplification transistor for HF band
Claims (1)
入力に接続したバンドパスフィルタの並列共振回路を切
換スイッチを介してｆ（Ｆ帯の高周波増幅回路に切換え
接続するように構成したことを特徴とする受信機の入力
切換装置。The VHF band and HF band signal receiver is configured such that a parallel resonant circuit of a bandpass filter connected to an input of Vf (F band) is switched and connected to a high frequency amplification circuit of f (F band) via a changeover switch. An input switching device for a receiver, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10583084A JPS60249436A (en) | 1984-05-25 | 1984-05-25 | Input switching device of receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10583084A JPS60249436A (en) | 1984-05-25 | 1984-05-25 | Input switching device of receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60249436A true JPS60249436A (en) | 1985-12-10 |
Family
ID=14417965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10583084A Pending JPS60249436A (en) | 1984-05-25 | 1984-05-25 | Input switching device of receiver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60249436A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9236892B2 (en) | 2013-03-15 | 2016-01-12 | Dockon Ag | Combination of steering antennas, CPL antenna(s), and one or more receive logarithmic detector amplifiers for SISO and MIMO applications |
| US9263787B2 (en) | 2013-03-15 | 2016-02-16 | Dockon Ag | Power combiner and fixed/adjustable CPL antennas |
| CN105453419A (en) * | 2013-03-15 | 2016-03-30 | 多康公司 | Frequency selective logarithmic amplifier with intrinsic frequency demodulation capability |
| US9503133B2 (en) | 2012-12-03 | 2016-11-22 | Dockon Ag | Low noise detection system using log detector amplifier |
| US9590572B2 (en) | 2013-09-12 | 2017-03-07 | Dockon Ag | Logarithmic detector amplifier system for use as high sensitivity selective receiver without frequency conversion |
| US11082014B2 (en) | 2013-09-12 | 2021-08-03 | Dockon Ag | Advanced amplifier system for ultra-wide band RF communication |
| US11183974B2 (en) | 2013-09-12 | 2021-11-23 | Dockon Ag | Logarithmic detector amplifier system in open-loop configuration for use as high sensitivity selective receiver without frequency conversion |
-
1984
- 1984-05-25 JP JP10583084A patent/JPS60249436A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9503133B2 (en) | 2012-12-03 | 2016-11-22 | Dockon Ag | Low noise detection system using log detector amplifier |
| US9621203B2 (en) | 2012-12-03 | 2017-04-11 | Dockon Ag | Medium communication system using log detector amplifier |
| US11012953B2 (en) | 2013-03-15 | 2021-05-18 | Dockon Ag | Frequency selective logarithmic amplifier with intrinsic frequency demodulation capability |
| US9263787B2 (en) | 2013-03-15 | 2016-02-16 | Dockon Ag | Power combiner and fixed/adjustable CPL antennas |
| CN105453419A (en) * | 2013-03-15 | 2016-03-30 | 多康公司 | Frequency selective logarithmic amplifier with intrinsic frequency demodulation capability |
| US9356561B2 (en) | 2013-03-15 | 2016-05-31 | Dockon Ag | Logarithmic amplifier with universal demodulation capabilities |
| US9397382B2 (en) | 2013-03-15 | 2016-07-19 | Dockon Ag | Logarithmic amplifier with universal demodulation capabilities |
| US9236892B2 (en) | 2013-03-15 | 2016-01-12 | Dockon Ag | Combination of steering antennas, CPL antenna(s), and one or more receive logarithmic detector amplifiers for SISO and MIMO applications |
| US9684807B2 (en) | 2013-03-15 | 2017-06-20 | Dockon Ag | Frequency selective logarithmic amplifier with intrinsic frequency demodulation capability |
| US9590572B2 (en) | 2013-09-12 | 2017-03-07 | Dockon Ag | Logarithmic detector amplifier system for use as high sensitivity selective receiver without frequency conversion |
| US10333475B2 (en) | 2013-09-12 | 2019-06-25 | QuantalRF AG | Logarithmic detector amplifier system for use as high sensitivity selective receiver without frequency conversion |
| US11050393B2 (en) | 2013-09-12 | 2021-06-29 | Dockon Ag | Amplifier system for use as high sensitivity selective receiver without frequency conversion |
| US11082014B2 (en) | 2013-09-12 | 2021-08-03 | Dockon Ag | Advanced amplifier system for ultra-wide band RF communication |
| US11095255B2 (en) | 2013-09-12 | 2021-08-17 | Dockon Ag | Amplifier system for use as high sensitivity selective receiver without frequency conversion |
| US11183974B2 (en) | 2013-09-12 | 2021-11-23 | Dockon Ag | Logarithmic detector amplifier system in open-loop configuration for use as high sensitivity selective receiver without frequency conversion |
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