JP2000197126A - Satellite communicating function adding device and dual mode portable radio equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain satisfactory radio communication with a ground wave base station by operating communication through the antenna for ground waves of portable radio equipment for ground waves with the ground wave base station at the time of connecting the portable radio equipment for ground waves with a satellite communicating function adding device. SOLUTION: Ground wave portable radio equipment 1 can communicate through a switching antenna 6 for ground waves of an adaptor 2 at the time of connection with the adaptor 2. That is, the antenna 4 for ground waves of the portable radio equipment 1 whose characteristics are deteriorated due to the connection with the dual mode adaptor 2 for satellite communication is automatically switched to the switching antenna 6 for ground waves which is preliminarily and specially adjusted according to the connection time by a control part so that communication with the ground wave base station can be realized according to satisfactory antenna characteristics. Also, the control part in the portable radio equipment 1 for ground waves operates diversity reception control (switching diversity and post-detection diversity or the like) by the switching antenna 6 for ground waves and a switching sub-antenna for ground waves so that the more satisfactory antenna characteristics can be realized.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terrestrial portable radio (eg, PDC, GSM,
The present invention relates to a satellite communication function adding device that provides a communication function with a satellite to the portable wireless device by being coupled to a terminal device in a PHS or the like.

[0002]

2. Description of the Related Art PDC, GS for communicating with terrestrial base stations
By combining with terrestrial portable radios such as M and PHS,
A satellite communication function adding device that provides a communication function with a satellite to the portable wireless device, a terrestrial portable wireless device having a communication function for a terrestrial wireless telephone can be used as a wireless telephone that performs wireless communication via a satellite. The portable wireless device is provided with software and hardware for satellite communication that are insufficient for the portable wireless device. Therefore, this additional device is also called a dual mode adapter for satellite communication. The terrestrial portable radio can be used as a radiotelephone with a terrestrial base station in a state where it is detachably and integrally connected to this additional device mechanically (connector connection, etc.) and electrically (signal transmission, etc.). It can also be used as a radiotelephone that performs radio communication with a satellite using a satellite communication antenna or the like of the device. In this additional device, the antenna unit has only the function of assuming communication with a satellite in terms of polarization, frequency, gain, and directivity.

FIG. 6 shows a conventional example, in which a terrestrial portable radio 1 is connected to a satellite communication dual mode adapter (satellite communication function adding device) 2. Reference numeral 3 denotes a satellite communication circular polarization antenna provided in the satellite communication dual mode adapter 2, which is used for satellite communication. Reference numeral 4 denotes a terrestrial antenna provided in the terrestrial portable radio 1, which is used for communication with a terrestrial base station. The terrestrial portable wireless device 1 has a key operation unit such as a microphone, a speaker, a display unit, and a dial on the front, a control unit, a wireless unit, and the like inside, and a connection with the dual mode adapter 2 for satellite communication. It functions as a radiotelephone that performs communication with the terrestrial base station in both the state and the non-connection state. At the time of connection, the satellite is connected to the dual-mode adapter for satellite communication 2 using hardware such as a circularly polarized antenna 3 for satellite communication, a control unit operated by software for satellite communication, and a radio unit. Function as a wireless telephone by communication via the Internet. Note that the microphone, speaker, display unit, and key operation unit provided in the terrestrial portable radio device 1 are also used for communication with the satellite when the satellite communication dual mode adapter 2 is connected.

[0004]

As described above, when a terrestrial portable radio is used for communication with a terrestrial base station at the time of coupling with an additional device, the portable radio is provided in itself. Use a terrestrial antenna. However, since the terrestrial portable wireless device adjusts the antenna characteristics with the highest priority given to the state in which the additional device is not coupled, when communicating with the terrestrial base station with the additional device coupled, The characteristics of the wave antenna are significantly deteriorated under the influence of the additional device.

[0005]

In order to solve the above-mentioned problems, the present invention can be detachably connected to a terrestrial portable radio having a communication function with a terrestrial base station. A satellite communication function adding device that provides a communication function with a satellite to a mobile station, the additional device includes a terrestrial antenna, and at the time of the connection, the terrestrial portable wireless device transmits the terrestrial base station via the terrestrial antenna. Communication with stations was made possible.

Also, the present invention provides a terrestrial portable radio having a communication function with a terrestrial base station, and a detachable connection with the portable radio. In a dual mode portable wireless device including a satellite communication function adding device that provides a communication function, the satellite communication function adding device includes a terrestrial antenna, and when coupled, the terrestrial portable wireless device is connected to the additional device. Communication with the terrestrial base station is performed via the provided terrestrial antenna.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 are schematic views showing the configuration of a first embodiment of the present invention, and the same parts are denoted by the same reference numerals in the drawings.

FIG. 1 is a schematic view of a dual mode adapter for satellite communication provided with a terrestrial switching antenna, which is integrally coupled to a terrestrial portable radio, as viewed from the front side. FIG. 2 is a schematic view of a dual mode adapter for satellite communication provided with a terrestrial switching antenna, as viewed from the rear side, in a state where the dual mode adapter is integrated with a terrestrial portable wireless device. FIG. 3 is a schematic diagram showing an antenna block in a state in which a satellite communication dual mode adapter provided with a terrestrial switching antenna is integrally connected to a terrestrial portable wireless device. In the figure, 1 is a terrestrial portable radio, 2 is a dual mode adapter for satellite communication (satellite communication function adding device), 3 is a circularly polarized antenna for satellite communication of the additional device 2, and 4 is a terrestrial mobile phone 1 A wave antenna, 5 is a ground wave switching sub-antenna built in the back of the portable wireless device 1, 6 is a ground wave switching antenna of the additional device 2, and 7 is a terrestrial switching sub-antenna built in the back of the additional device 2.

Next, the operation in such a configuration will be described. The terrestrial portable wireless device 1 can communicate with the terrestrial switching antenna 6 of the adapter 2 when coupled to the adapter 2. That is, the terrestrial antenna 4 of the portable wireless device 1 whose characteristics have been degraded by being coupled to the satellite communication dual-mode adapter 2 is not shown in the figure. When the control unit automatically switches, communication with the terrestrial base station can be realized with good antenna characteristics. A control unit (not shown) in the terrestrial portable radio device 1 performs diversity reception control (switching diversity, diversity after detection, etc.) between the terrestrial switching antenna 6 and the terrestrial switching sub-antenna 7, and furthermore, Realize good antenna characteristics.

As shown in FIG. 3 showing an antenna block of the first embodiment, a terrestrial portable radio 1 includes a radio section comprising a high-frequency circuit 9 and the like, a terrestrial antenna 4 and a terrestrial sub-antenna 5. (Built-in antenna), and when the wireless device 1 is used alone, the antennas 4 and 5 control diversity reception by a control unit (not shown). When performing terrestrial communication at the time of coupling with the satellite communication dual mode adapter 2, the control unit performs diversity reception control so that the sub antennas 6 and 7 can perform the best reception.

The satellite communication circularly polarized antenna 3 transmits / receives radio signals to / from a radio section of the adapter 2 including a high-frequency circuit and a radio control circuit (not shown), and the signal received by the antenna 3 is In the case of an audio signal, it is configured to be output by a speaker of the terrestrial portable wireless device 1 (not shown). Further, when the circularly polarized antenna for satellite communication 3 is used, the voice input from the microphone of the portable radio unit for terrestrial wave 1 is configured so that the signal is wirelessly transmitted from the circularly polarized antenna 3 (illustrated in the figure). Omitted).

FIGS. 4 and 5 show a second embodiment of the present invention, and the same parts as those in the above-mentioned drawings are denoted by the same reference numerals. FIG. 4 is a schematic diagram of a dual mode adapter for satellite communication provided with a terrestrial antenna element viewed from the front side in a state of being integrally coupled to a terrestrial portable wireless device. FIG. 5 is a schematic view showing the principle of an antenna in which a dual mode adapter for satellite communication provided with a terrestrial wave coupling antenna element is integrally connected to a terrestrial portable radio device.

In the second embodiment, a telescopic terrestrial antenna element 8 provided on a satellite dual mode adapter 2 is electromagnetically coupled to a terrestrial antenna 4 of a terrestrial portable radio 1. This is an example in which the antenna characteristics of the terrestrial portable radio device 1 are kept good. That is, when the portable wireless device 1 and the adapter 2 are coupled, the terrestrial antenna element 8 (half-wave antenna) is arranged near the terrestrial antenna 4, and in this state, the antennas 4 and 8 Function as an integrated antenna. The terrestrial antenna element 8 is designed to be incorporated in the resin pole 10 so as to perform the best reception by electromagnetic field coupling with the antenna 4. It can be stored in.

[0014]

As described above, according to the present invention, the terrestrial antenna is provided in the satellite communication function adding device, and when the terrestrial portable radio device and the satellite communication function adding device are connected, the terrestrial portable radio is connected. Communication with the terrestrial base station via the terrestrial antenna provided in the additional device enables the terrestrial portable radio to be equivalent to wireless communication when uncoupled It is possible to perform good wireless communication with a terrestrial base station at a quality of.

[Brief description of the drawings]

FIG. 1 is a schematic view of a dual mode adapter for satellite communication provided with a terrestrial switching antenna according to a first embodiment of the present invention viewed from the front side in a state of being coupled to a terrestrial portable wireless device.

FIG. 2 is a schematic view of a dual mode adapter for satellite communication provided with a terrestrial switching antenna according to the first embodiment of the present invention, viewed from the rear side in a state of being coupled to a terrestrial portable radio device.

FIG. 3 is a schematic diagram showing an antenna block in which a satellite communication dual mode adapter provided with a terrestrial switching antenna is coupled to a terrestrial portable wireless device in the first embodiment of the present invention.

FIG. 4 is a schematic view of a satellite communication dual mode adapter provided with a terrestrial wave coupling antenna element as viewed from the front side in a state of being coupled to a terrestrial portable radio device in a second embodiment of the present invention.

FIG. 5 is a schematic view showing the principle of an antenna in which a satellite communication dual mode adapter provided with a terrestrial wave coupling antenna element is coupled to a terrestrial portable radio device in a second embodiment of the present invention.

FIG. 6 is a state diagram in which a conventional terrestrial portable wireless device and a dual mode adapter for satellite communication (satellite communication function adding device) are connected.

[Explanation of symbols]

1: Portable radio for ground wave 2: Dual mode adapter for satellite communication (satellite communication function added device) 3: Circularly polarized antenna for satellite communication 4: Antenna for ground wave 5: Sub-antenna for ground wave 6: For ground wave Switching antenna 7: Switching sub-antenna for ground wave 8: Half-wave antenna element 9: High-frequency circuit 10: Resin antenna pole

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (Reference) H04M 1/21 H04M 1/21 Z

Claims (4)

[Claims] 1. A satellite communication system which is detachably connectable to a terrestrial portable radio having a communication function with a terrestrial base station, and provides the terrestrial portable radio with a communication function with a satellite at the time of the connection. In the function adding device, the additional device includes a terrestrial antenna, and the terrestrial portable wireless device can communicate with the terrestrial base station via the terrestrial antenna during the coupling. Satellite communication function adding device. 2. A terrestrial portable radio device having a communication function with a terrestrial base station, and detachably connectable to the portable radio device, and at the time of connection, the portable radio device provides a communication function with a satellite. A satellite communication function adding device, comprising: a terrestrial antenna provided in the satellite communication function adding device, wherein the terrestrial portable wireless device is provided with a terrestrial wave included in the additional device. A dual-mode portable wireless device characterized by performing communication with a terrestrial base station via an antenna. 3. The additional device includes a plurality of the terrestrial antennas, and the terrestrial portable radio device includes a control unit that performs diversity reception using the plurality of terrestrial antennas. The dual mode portable wireless device according to claim 2, wherein 4. The terrestrial antenna provided in the terrestrial portable radio and the terrestrial antenna provided in the additional device are arranged close to each other at the time of the coupling so that the antennas are electromagnetically coupled to each other. The dual-mode portable wireless device according to claim 2, wherein: