JPH0247815U - - Google Patents
Info
- Publication number
- JPH0247815U JPH0247815U JP12759288U JP12759288U JPH0247815U JP H0247815 U JPH0247815 U JP H0247815U JP 12759288 U JP12759288 U JP 12759288U JP 12759288 U JP12759288 U JP 12759288U JP H0247815 U JPH0247815 U JP H0247815U
- Authority
- JP
- Japan
- Prior art keywords
- diode
- circuit
- control voltage
- transmission circuit
- capacitor
- 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
- 239000003990 capacitor Substances 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims 6
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
Description
第１図は本考案の一実施例を示す回路図、第２
図は本考案の別の実施例を示す回路図である。
主な図番の説明、１，１５……アンテナ端子、
４，９，１２，１８，２３，２６……ダイオード
、５，７，１３，１９，２１，２７……コンデン
サ、６，８，１４，２０，２２，２８……抵抗。
Figure 1 is a circuit diagram showing one embodiment of the present invention;
The figure is a circuit diagram showing another embodiment of the present invention. Explanation of main drawing numbers, 1, 15...antenna terminal,
4, 9, 12, 18, 23, 26... Diode, 5, 7, 13, 19, 21, 27... Capacitor, 6, 8, 14, 20, 22, 28... Resistor.
Claims (1)
号の入力を切換えるアンテナ切換え装置において
、ダイオードが挿入されると共に前記第１アンテ
ナからの電波信号を伝送する第１伝送回路と、ダ
イオードが挿入されると共に前記第２アンテナか
らの電波信号を伝送する第２伝送回路と、互いに
並列に接続されたコンデンサ及び抵抗と該コンデ
ンサ及び抵抗に直列に接続されたダイオードとか
ら構成されると共に前記第１伝送回路とアースと
を接続する為の第１短絡回路と、互いに並列に接
続されたコンデンサ及び抵抗と該コンデンサ及び
抵抗に直列に接続されたダイオードとから構成さ
れると共に前記第２伝送回路とアースとを接続す
る為の第２短絡回路とを備え、前記第１アンテナ
からの電波信号の選択時に第１の制御電圧により
前記第１伝送回路のダイオード及び前記第１短絡
回路のダイオードにそれぞれ順及び逆バイアスを
与えると共に前記第１の制御電圧と逆極性の第２
の制御電圧により前記第２伝送回路のダイオード
及び前記第２短絡回路のダイオードにそれぞれ逆
及び順バイアスを与え、前記第２アンテナからの
電波信号の選択時に前記第１の制御電圧により前
記第１伝送回路のダイオード及び前記第１短絡回
路のダイオードにそれぞれ逆及び順バイアスを与
えると共に前記第２の制御電圧により前記第２伝
送回路のダイオード及び前記第２短絡回路のダイ
オードにそれぞれ順及び逆バイアスを与える様に
したことを特徴とするアンテナ切換え装置。 An antenna switching device that switches input of radio wave signals received by first and second antennas, a first transmission circuit having a diode inserted therein and transmitting the radio wave signal from the first antenna; a second transmission circuit configured to transmit a radio signal from the second antenna; a capacitor and a resistor connected in parallel; and a diode connected in series to the capacitor and resistor; It is composed of a first short circuit for connecting to the ground, a capacitor and a resistor connected in parallel with each other, and a diode connected in series to the capacitor and the resistor, and also connects the second transmission circuit to the ground. and a second shorting circuit for applying a forward and reverse bias to the diode of the first transmission circuit and the diode of the first shorting circuit, respectively, by a first control voltage when selecting a radio signal from the first antenna. and a second control voltage of opposite polarity to the first control voltage.
The control voltage applies reverse and forward biases to the diode of the second transmission circuit and the diode of the second short circuit, respectively, and the first control voltage applies reverse bias and forward bias to the diode of the second short circuit, respectively. Applying reverse and forward biases to the diodes of the circuit and the diodes of the first short circuit, respectively, and applying forward and reverse biases to the diodes of the second transmission circuit and the diodes of the second short circuit, respectively, by the second control voltage. An antenna switching device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12759288U JPH0247815U (en) | 1988-09-29 | 1988-09-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12759288U JPH0247815U (en) | 1988-09-29 | 1988-09-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0247815U true JPH0247815U (en) | 1990-04-03 |
Family
ID=31380161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12759288U Pending JPH0247815U (en) | 1988-09-29 | 1988-09-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0247815U (en) |
-
1988
- 1988-09-29 JP JP12759288U patent/JPH0247815U/ja active Pending
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