JPH08265206A - Conversion connector for radio frequency measurement - Google Patents

Abstract

PURPOSE: To easily measure the frequency characteristics of a radio communication equipment from an outside by attaching a conversion connector capable of connecting a measurement cable and connecting an external antenna as well at the normal attachment place of an antenna. CONSTITUTION: After the antenna is detached, this conversion connector 7 is attached by a screw 6 and the lower end of the conversion connector 7 is brought into contact with an antenna contact point spring 4. By connecting the measurement cable 8 for frequency measurement to the conversion connector 7, measurement signals are directly sent to the antenna contact point of a printed board inside the communication equipment. Thus, radio frequency characteristics are easily measured from the outside without decomposing the communication equipment. Further, the loss of signals is extremely small. Also, at the time of communication with the outside, by connecting an external antenna cable 8 to the conversion connector 7, the communication with the outside is immediately made possible. Thus, the measurement of the frequency characteristics and the investigation of a communication state are alternately switched by a simple operation in a short time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless communication device such as a mobile phone, and more particularly to a conversion connector for measuring its frequency characteristic.

[0002]

2. Description of the Related Art Conventionally, in order to check the frequency characteristics of a radio communication device such as a mobile phone, for example, in the case of the mobile phone shown in FIG. 4, a coaxial connector in an external connector 9 at the bottom of the phone is used. Frequency measurement has been performed by exchanging signals from an external frequency measuring device using a contact or a coaxial connector on a substrate in a telephone.

[0003]

However, in such radio frequency measurement, when the external connection connector 9 on the bottom of the telephone is used as shown in FIG. 4, the antenna circuit on the printed circuit board inside the telephone is used. It is necessary to carry out wiring to the bottom of the telephone with a coaxial cable or the like, and there is a drawback that the signal for frequency measurement is lost by the length of the cable. Further, when the measurement is performed using the coaxial connector on the printed circuit board inside the telephone, the case of the telephone must be disassembled, and the frequency measurement cannot be performed in the assembled state of the telephone.

The present invention has been made in order to solve these problems, and the frequency characteristic of a wireless communication device such as a mobile phone can be easily measured from the outside by reducing the loss of the measurement signal. An object is to provide a conversion connector for frequency measurement.

[0005]

In order to achieve this object, in the present invention, a measuring cable for externally measuring a radio frequency characteristic at a normal antenna mounting location of a radio communication device such as a mobile phone. Attach a conversion connector for radio frequency measurement that can be connected to the antenna and can also be connected to an external antenna.

[0006]

[Operation] By attaching this conversion connector to the usual antenna installation location by removing the antenna and connecting the measurement cable for frequency measurement to this, the measurement signal is sent directly to the antenna contact of the printed circuit board inside the communication device. be able to. Therefore, the measurement of the radio frequency characteristic can be easily performed from the outside without disassembling the communication device, and the signal loss is extremely small. When making a call with the outside, by connecting an external antenna cable to the conversion connector, it is possible to immediately make a call with the outside. Therefore, the measurement of the frequency characteristic and the investigation of the call state can be alternately performed in a short time by a simple operation.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1, 2 and 3 are views showing a structure of a conversion connector for measuring radio frequency in a mobile phone according to the present invention and a mounting method thereof.

First, FIG. 1 is a view showing an appearance of a mobile phone 1 in a normal use state and a cross section of an antenna mounting portion. As shown in the figure, the lower end of the antenna 2 is in contact with the antenna contact spring 4 of the printed circuit board 3. Further, although not shown in the figure, the contact spring 4 is connected to the antenna circuit on the printed circuit board 3. Directly connected.

Next, when measuring the radio frequency characteristic, the set screw 5 of the antenna 2 is loosened, and the screw 6 is cut at the base of the antenna 2, so that the antenna 2 is rotated while the antenna 2 is shown in FIG. Then, the antenna 2 is removed. next,
As shown in FIG. 3, after removing the antenna 2, the conversion connector 7 is attached with the screw 6, and the lower end of the conversion connector 7 is brought into contact with the antenna contact spring 4. A commercially available connector plug (SMA
Type), so that the frequency measurement cable or the external antenna cable 8 can be easily replaced and attached according to the purpose.

[0010]

As described above, by using the conversion connector for measuring the radio frequency according to the present invention, the external measurement of the frequency characteristic of the radio communication device such as a mobile phone can disassemble the communication device. In addition, the frequency measurement cable and the external antenna cable can be easily replaced according to the purpose without any loss of the strength of the measurement signal.

[Brief description of drawings]

FIG. 1 is a diagram showing a normal use state of a mobile phone according to the present invention.

FIG. 2 is a diagram showing a method for removing an antenna in the mobile phone.

FIG. 3 is a diagram showing a method of attaching a conversion connector to the mobile phone and further attaching a frequency measurement cable thereto.

FIG. 4 is a diagram showing a frequency measurement method in a conventional mobile phone.

[Explanation of symbols]

 1 ... Mobile phone 2 ... Antenna 3 ... Printed circuit board 4 ... Antenna contact spring 5 ... Antenna set screw 6 ... Screw 7 ... Conversion connector 8 ... Measurement cable or external antenna cable 9 ... External connection connector

Claims (1)

[Claims] 1. A measurement cable for externally measuring the frequency characteristics of the wireless communication device, which is mounted at a normal antenna mounting position in a wireless communication device such as a mobile phone, and which is selectively connected to an external antenna cable. A conversion connector for radio frequency measurement, which is capable of performing.