Earphone antenna connecting device and portable wireless device
First Claim
1. An earphone antenna connecting device for connecting an earphone antenna including high- and low-frequency signal transmission lines to a portable radio set via a pin-plug connector, the device comprising:
- a conversion board formed from a double-sided printed circuit board having formed therein pin insertion holes in which pins of the pin-plug connector are to be inserted, the conversion board having formed on one side thereof a connecting pattern having connecting lands formed around the pin insertion holes, respectively, and connecting lands to which the transmission lines are to be connected, and on the other side a grounding pattern not including a portion of the conversion board where there are formed the pin insertion holes for the pins to which the antenna signal lines are to be connected, and which is formed to surround at least three sides of each of the pin insertion holes in which signal pins through which the low-frequency signal is to pass are to be inserted.
1 Assignment
0 Petitions
Accused Products
Abstract
In a liquid crystal TV receiver, when the pins (11 to 20) of the 10-pin connector plug (115) are soldered to the pins of the pin-plug connector (110) used for connection of the coaxial cable (60) used to transmit low-frequency and RF signals to a body (120) of the TV receiver, the conversion board is provided between the pins of the 10-pin connector plug (115) and pins of the pin-plug connector (110) and the rear-side pattern of the conversion board except for the pin insertion hole (10) in which the pin (20) to which the antenna signal line (9) is to be connected is to be inserted is formed as the grounding pattern to surround at least three sides of the pin insertion holes (134A, 135A and 132A) in which the audio signal pins (14 and 15) through which low-frequency signals such as audio signals are passed and the microphone pin (12) are to be inserted, respectively. Thus, the RF characteristic and suppression of audio noises are considerably improved.
30 Citations
4 Claims
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1. An earphone antenna connecting device for connecting an earphone antenna including high- and low-frequency signal transmission lines to a portable radio set via a pin-plug connector, the device comprising:
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a conversion board formed from a double-sided printed circuit board having formed therein pin insertion holes in which pins of the pin-plug connector are to be inserted, the conversion board having formed on one side thereof a connecting pattern having connecting lands formed around the pin insertion holes, respectively, and connecting lands to which the transmission lines are to be connected, and on the other side a grounding pattern not including a portion of the conversion board where there are formed the pin insertion holes for the pins to which the antenna signal lines are to be connected, and which is formed to surround at least three sides of each of the pin insertion holes in which signal pins through which the low-frequency signal is to pass are to be inserted. - View Dependent Claims (2)
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3. A portable radio set to which an earphone antenna including a high- and low-frequency signal transmission lines to a portable radio set via an earphone antenna connecting device using a pin-plug connector, the earphone antenna connecting device comprising:
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a conversion board formed from a double-sided printed circuit board having formed therein pin insertion holes in which pins of the pin-plug connector are to be inserted, the conversion board having formed on one side thereof a connecting pattern having connecting lands formed around the pin insertion holes, respectively, and connecting lands to which the transmission lines are to be connected, and on the other side a grounding pattern not including a portion of the conversion board where there are formed the pin insertion holes for the pins to which the antenna signal lines are to be connected, and which is formed to surround at least three sides of each of the pin insertion holes in which signal pins through which the low-frequency signal is to pass are to be inserted. - View Dependent Claims (4)
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Specification