JPS5724129A - Antenna circuit - Google Patents
Antenna circuitInfo
- Publication number
- JPS5724129A JPS5724129A JP9918780A JP9918780A JPS5724129A JP S5724129 A JPS5724129 A JP S5724129A JP 9918780 A JP9918780 A JP 9918780A JP 9918780 A JP9918780 A JP 9918780A JP S5724129 A JPS5724129 A JP S5724129A
- Authority
- JP
- Japan
- Prior art keywords
- uhf
- vhf
- input
- antenna
- circuit
- 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
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)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Abstract
PURPOSE:To use one end of an antenna terminal plate providing independent input terminals for UHF and VHF in common to UHF and U/V mixing input antennas, by providing a means which controls a coupling switch element with a changeover switch. CONSTITUTION:A coupling circuit is connected to a UHF input terminal and a low- pass filter is connected to a VHF input terminal, and a means which can connect the antenna input for U/V mixing input to an antenna without any brancher is provided by switching a coupling switch element provided between the circuits. For example, when a changeover switch is changed over to the VHF side, i.e., +B side, a diode D1 is in forward bias and the U/V both parts are coupled. A UHF signal inputted to a terminal 1 is transmitted to a UHF circuit Z01 without loss of a low-pass filter and a UHF signal is attenuated in a VHF circuit Z02 via inductances L2, L3, allowing transmit the VHF signals.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9918780A JPS5724129A (en) | 1980-07-18 | 1980-07-18 | Antenna circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9918780A JPS5724129A (en) | 1980-07-18 | 1980-07-18 | Antenna circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5724129A true JPS5724129A (en) | 1982-02-08 |
JPS6347015B2 JPS6347015B2 (en) | 1988-09-20 |
Family
ID=14240637
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9918780A Granted JPS5724129A (en) | 1980-07-18 | 1980-07-18 | Antenna circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5724129A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6058149A (en) * | 1983-09-12 | 1985-04-04 | 日立プラント建設株式会社 | Shower for cleaning room |
JPS61170465U (en) * | 1985-02-19 | 1986-10-22 | ||
JPS6347732U (en) * | 1986-09-16 | 1988-03-31 |
-
1980
- 1980-07-18 JP JP9918780A patent/JPS5724129A/en active Granted
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6058149A (en) * | 1983-09-12 | 1985-04-04 | 日立プラント建設株式会社 | Shower for cleaning room |
JPS6328621B2 (en) * | 1983-09-12 | 1988-06-09 | Hitachi Plant Eng & Constr Co | |
JPS61170465U (en) * | 1985-02-19 | 1986-10-22 | ||
JPH0228875Y2 (en) * | 1985-02-19 | 1990-08-02 | ||
JPS6347732U (en) * | 1986-09-16 | 1988-03-31 |
Also Published As
Publication number | Publication date |
---|---|
JPS6347015B2 (en) | 1988-09-20 |
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