CN1051886C - Power adapter with integral radio frequency port - Google Patents
Power adapter with integral radio frequency port Download PDFInfo
- Publication number
- CN1051886C CN1051886C CN94191396A CN94191396A CN1051886C CN 1051886 C CN1051886 C CN 1051886C CN 94191396 A CN94191396 A CN 94191396A CN 94191396 A CN94191396 A CN 94191396A CN 1051886 C CN1051886 C CN 1051886C
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- antenna
- communication equipment
- power supply
- connector
- supply adaptor
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Abstract
The present invention provides an electricity adapter (10) suitable for coupling an outside antenna (17) to a communication equipment (30) through a cable (12) whose one end is typically inserted into the cigarette igniter of cars or other electrical sources and whose other end is connected to an input connector of the communication equipment (30). In particular, the present invention provides a simple electricity adapter for cars providing a RF input or output power connected to an outside car antenna. According to a plurality of aspects of the present invention, the adapter can be deployed as one having multi-choice mechanism. For example, the communication equipment can have a RF switch (34) and a control circuit used to choose the inside or the outside antenna so as to receive a best program. On the other hand, the cable can have an external switch (70) allowing choosing the antenna which users need. Lastly, the cable can have an element which can start a switch automatically and choose the outside antenna when being connected to the communication equipment.
Description
The present invention relates to be used for the power supply adaptor of portable equipment, more particularly relate to and be used for the power supply adaptor that communication equipment has integral radio frequency port.
In the equipment of portable, battery powered, for example cellular telephone or other communication equipment provide outside power supply usually, and the user can be from domestic power supply or automobile power source operating equipment, so that preserve the power of battery.In order to operate the communication equipment in the automobile, in the cigar lighter socket that the common design and installation of power supply adaptor provides in automobile.The other end of power supply adaptor is inserted into the external power source input connector of this equipment or comprises industrial being called " battery eliminator " usually, and it substitutes the knock-down battery that is connected to telephone set or communication equipment.
When the cellular telephone in the operation automobile or other communication equipment, usually wish to use to be fixed to the outer antenna of car, so that improve the performance of telephone set.Some telephone sets also provide radio frequency (RF) input/output end port except the external power source input port is provided, so that can utilize outside antenna.But this equipment needs two independent connectors.In other telephone set, in the single connector that outside power input mouth and RF input/output end port are combined in this equipment.But such equipment is requirement or external power source or connected exterior antenna typically.
Therefore, need provide a kind of simple, individual cable automobile power source adapter, this adapter also are provided for connecting the RF input/output capabilities of external car antenna.
According to the present invention, a kind of power supply adaptor assembly is provided here, be suitable for couple electrical energy to a communication equipment with a power supply, described assembly comprises: a power connector, be suitable for being coupled to described power supply, described power connector has a radio frequency (RF) port, is suitable for an antenna coupling radiofrequency signal from described communication equipment outside; And a cable, be coupled to described power connector, be used for toward and provide electric energy and RF signal from described communication equipment; It is characterized in that: but user's selector switch integrally be associated with described power connector, be used to select an antenna.
Fig. 1 is the perspective view that has the power supply adaptor of comprehensive RF port according to the present invention.
Fig. 2 is the schematic diagram of the power supply adaptor of Fig. 1.
Fig. 3 is exterior antenna and the schematic diagram with the power supply adaptor that is coupled between the communication equipment of an inside antenna and the circuit that is used to select inside antenna or exterior antenna.
Fig. 4 is the block diagram of the alternate embodiments of power supply adaptor according to the present invention, has an outside, and which antenna at user option switch be used to select be connected to the transceiver of communication equipment.
Fig. 5 is the schematic diagram of connector 16 of power adapters that is used for the automatic selection of exterior antenna according to the present invention.
Fig. 6 is the schematic diagram of another embodiment of connector of power adapters 16 that is used for the automatic selection of exterior antenna according to the present invention.
Fig. 7 is the schematic diagram of antenna that is suitable for being connected to the power supply adaptor of Fig. 2.
Fig. 8 is the schematic diagram of antenna that is suitable for being connected to the power supply adaptor of Fig. 2.
The invention provides a kind of power supply adaptor, be used for connecting exterior antenna to a communication equipment by cable, this a cable typically end is inserted into cigar lighter or some other power supplys of automobile, and the other end is connected to the input connector of communication equipment.Particularly, the invention provides simply, unit cable automobile power source adapter, this adapter have a radio frequency (RF) input/output end port, are used to connect external car antenna.According to certain aspects of the invention, this adapter can be configured to have various antenna choice mechanism.For example, when power supply adaptor is connected to communication equipment, can select exterior antenna.Alternately, this adapter can comprise an external switch, allows the user to select the antenna that needs.At last, this adapter can comprise a switch that links to each other with the RF port, and when the antenna of outside was connected to this adapter, this switch can automatically make communication equipment select outside antenna.
At first translate into Fig. 1, Fig. 1 represents the perspective view according to power supply adaptor of the present invention.Power supply adaptor 10 comprises a cigar lighter adapter 11, and it is inserted into the cigar lighter of automobile usually, is used for receiving power supply from the electrical system of automobile.But power supply also can be supplied with from a connector, rather than from cigar lighter.Cable 12 is connected between cigar lighter 11 and the connector 14.Connector 14 preferably is inserted in the socket of the communication equipment that is fit to hold connector.On the other hand, connector 14 can link to each other with " battery eliminator ", connects the knock-down battery of communication equipment to power-supply device to substitute.At last, preferably the external RF port one 6 that links to each other with cigar lighter adapter 11 is suitable for the reception antenna cable, to send the signal between this equipment and the automobile external antenna.The RF transmitting device offers this communication equipment from external RF port one 6 by cable 12 and connector 14.
Translate into Fig. 2 now, the figure shows the detailed schematic diagram of power supply adaptor.Specifically, power supply adaptor is received exterior antenna 17 by transmission line 18 (preferably coaxial cable) at the coaxial connector place with outer conductor 19 and inner wire 20.Cigar lighter adapter 11 preferably includes a connector 16, and it also is a coaxial connector.Connector 16 has outer conductor 21 and inner wire 22, and the transmission line 23 (preferably coaxial cable) that provides in cable 12 is provided for they.Transmission line 23 has outer conductor 24 and inner wire 25, and they are connected to the coaxial connector 26 with outer conductor 27 and inner wire 28.This power supply adaptor 10 is connected to communication equipment by connector 26, for example cellular telephone.At last, cable 12 can comprise other lead 29, for example the power line from cigar lighter 11 to communication equipment or from the circuit of the data-signal of the electrical control module in the automobile.
Translate into Fig. 3 now, the detailed schematic diagram shown in the figure is illustrated in the power supply adaptor 10 that connects between exterior antenna and the communication equipment 30.This power supply adaptor is equal to the power supply adaptor of Fig. 2, but except included stopping direct current (DC) capacitor 35 and the resistance 37.Though only represented to be used to realize the relevant portion of the communicating equipment circuit of this power supply adaptor, should understand that for the work of communication equipment, other circuit also needs.For the exterior antenna connector 14 of Coupled RF signal to the power supply adaptor, this communication equipment must comprise a RF switching device, is used for sending selectively inside antenna or the exterior antenna port of RF signal to telephone set.Specifically, communication equipment 30 generally comprises an antenna 32, is coupled to RF switch 34 by capacitor 36.This RF switch is coupled to the transceiver part of communication equipment and selects which antenna to be connected to this transceiver.Preferably, when power supply adaptor was access in, this switch can be coupled this transceiver to exterior antenna.Application No. 08/149443 on November 9th, 1993 by Mark Pennock application, disclose the example of the reliable electronic RF switch that can use in circuit in the title " electronic antenna converting system ", this application transfers assignee of the present invention also in the lump as a reference here.
In order to make RF switch Coupled RF signal to exterior antenna, this power supply adaptor provides a signal to communication equipment 30 best, indicates this power supply adaptor to be coupled with and should use exterior antenna.This power supply adaptor comprises resistance 37 (preferably 10K Ω), it be connected to so that this signal to be provided.Though expression capacitor 35 and resistor 37 approach the inner wire 28 of coaxial connector 26, but block capacitor can be placed on along any position of the inner wire 25 of transmission line 23, and resistor can be placed on any position to be provided to the path on ground, as long as a side of capacitor is near coaxial connector 26.For example, resistor and capacitor can be placed in the cigar lighter adapter 11.As what below will describe in detail, when the resistance in utilizing power supply adaptor was provided to the path on ground, the circuit in the communication equipment arrived its external RF port 40 (therefore, being coupled to exterior antenna) with the transceiver of coupled communication equipment.This communication equipment comprises bipolar junction transistor (BJT) 44 and 46, is used to control RF switch 34.According to the present invention, transistor 44 is NPN transistor and transistor 46 is the PNP transistor best best.This circuit further comprises a resistance 48, and first end of this resistance 48 is connected to connector 40, and second end is connected to electric capacity 50 ground connection at node 49.Resistance 48 and capacitor 50 are connected to resistance 52 also at node 49, and resistance 52 is connected to the base stage of transistor 44.Resistance 54 is connected between the base stage and transmitter of transistor 44, and emitter is connected to negative voltage, preferably negative 3.9 volts.The extremely electricity that resistance 56 also is connected on transistor 44 collects between the base stage of (at switch control port A) and transistor 46.Resistance 58 is connected between the base stage and emitter of transistor 46, and emitter is connected to positive voltage, preferably 4.75 volts.At last, resistance 60 is connected the collector electrode (at switch control port B) of transistor 46 and negative voltage preferably between negative 3.9 volts.Obviously the actual crystal pipe switch arrangement of Fig. 3 is an example that can be used for the circuit changed between interior and the outside antenna, but can utilize other circuit within the scope of the invention.For example, can utilize metal-oxide semiconductor (MOS) (MOS) transistor or different reference potentials.
Describe the optimum structure of ON-OFF control circuit above, will describe the work of this circuit now.When power supply adaptor when connector 40 is inserted into the external RF port of transceiver, the resistance of power supply adaptor 37 starts RF switches 34.Particularly, resistance 37 is brought up to about 0 volt to the base voltage of transistor 44, and this voltage makes transistor 44 conductings, like this negative voltage is added to RF switch control port A.The base stage of transistor 46 is also reduced by the collector electrode of transistor 44, therefore makes transistor 46 conductings be added to RF switch control port B to positive voltage.When negative voltage is added to RF switch control port A and positive voltage when being added to RF switch control port B, the RF signal sends to the external RF port 40 of communication equipment 30 from transceiver.
If positive connector 14 is removed from the external RF port 40 of communication equipment, the base voltage of transistor 44 is controlled to the emitter voltage of transistor 44, have make with putting transistor 44 by and produce high voltage at the control port A of RF switch 34.Because the high voltage of the base stage of transistor 46 ends transistor 46, adds the RF switch control port B that negative electricity is pressed onto the RF switch like this.When positive voltage is added to RF switch control port A and negative voltage when being added to control port B, RF power is sent to the antenna of transceiver from receiver/transmitter.
According to another aspect of the present invention, might revise the power supply adaptor design, but comprise user's selector switch, be used for determining whether the RF signal should be coupled to aerial lug.Particularly, but Fig. 4 represents to have the power supply adaptor of resistance 37 and user's selector switch 70, allows RF power arbitrarily to be coupled to portable comprehensive antenna or exterior antenna by the user.By Closing Switch 70, start the circuit in the communication equipment 30 as mentioned above so that transmit the external RF port 40 of RF signal to communication equipment from transceiver 38.If switch 70 stays open, occur removing the same effect of connector 14 as mentioned above, and the RF signal will be coupled to antenna 32 from transceiver 38 from the outside port of communication equipment 30.The adapter of Fig. 4 can be used for having the communication equipment of circuit shown in Figure 3.
According to another aspect of the present invention, when exterior antenna is connected to external RF port power adapter, can use a connector, wherein the RF signal automatically is coupled to exterior antenna.Fig. 5 represents to allow the preferred connector 16 of the power supply adaptor 10 that automatic RF port selects.Particularly, the small-sized UHF antenna connector 22 of former designs the center conductor socket with a separation particularly, and its two halves are electric insulation normally.Half of socket is typically connected to the inner wire 25 of transmission line 23.Second half of socket is connected to earth resistance 37.When the user inserted the exterior antenna of standard, the two halves of center conductor socket connected by the plug end 20 of exterior antenna plug.This makes the connection that is established to ground by resistance 37, and the ON-OFF control circuit that starts communication equipment is aforesaid to exterior antenna with the Coupled RF signal.Therefore, when exterior antenna was connected, the RF signal automatically was coupled to exterior antenna.
Translate into Fig. 6 now, the figure shows the alternate embodiment of the connector of the power adapters 10 that allows automatic RF port selection.In the embodiment that substitutes, additional contact 80 synthetically links to each other with connector 16.Additional contact 80 is normally electrically isolated with the outer conductor 21 of connector 16.This additional contact 80 is connected to resistance 37, and its other end is connected to the inner wire 25 of transmission line 23.Between the inner wire 22 of Coupling point and connector 16, also dispose blocking capacitor 35.When the coaxial antenna of standard was connected, the outer conductor 19 that is used for the connector of exterior antenna connected the outer conductor 21 of additional contact 80 to connector 16, realizes that by resistance 37 wherein the RF signal automatically is coupled to exterior antenna to the path on ground.Fig. 5 and 6 connector allow user's operating power adapter, if necessary, by not connecting exterior antenna simply, and utilize the antenna of communication equipment.
Translate into Fig. 7 now, the figure shows the optimal external antenna 90 of the power supply adaptor that can be connected to Fig. 2.Specifically, the antenna of Fig. 7 comprises blocking capacitor 35 and the resistance 37 that is provided to the ground path.Therefore, when connecting exterior antenna, as mentioned above, communication equipment will by adapter assembly automatically the Coupled RF signal to exterior antenna.Antenna substrate 92 can comprise that magnet or window clip connect antenna to automobile.
Translate into Fig. 8 now, the figure shows the alternate embodiment of the exterior antenna that is connected to power supply adaptor.Exterior antenna 90 comprises loading coil 94, and loading coil 94 plays a part autotransformer, so that the impedance matching between antenna 17 and the transmission line 18 is provided.Because the structure of loading coil, be provided to the DC channel on ground, it will make circuit in the communication equipment by this adapter assembly Coupled RF signal to exterior antenna.
In a word, the present invention provides a kind of simple device by unit cable, is used for from cigar lighter adapter coupling power and RF signal to communication equipment.Therefore, the present invention has simplified the connection of exterior antenna to the portable cellular phone machine that utilizes this power supply adaptor.Equally, power supply adaptor is by utilizing the resistance in the adapter or in the exterior antenna selectively, and exterior antenna is selected in configurable permission, so that carry out the coupling of RF signal to exterior antenna.
Claims (3)
1. a power supply adaptor assembly is suitable for couple electrical energy to a communication equipment with a power supply, and described assembly comprises:
A power connector is suitable for being coupled to described power supply, and described power connector has a radio frequency (RF) port, is suitable for an antenna coupling radiofrequency signal from described communication equipment outside; And
A cable is coupled to described power connector, be used for toward and provide electric energy and RF signal from described communication equipment;
It is characterized in that:
But user's selector switch is integrally related with described power connector, is used to select an antenna.
2. power supply adaptor assembly according to claim 1, it is characterized in that, a resistance, be coupling between the node and ground of described power connector, described resistance lifts a predetermined value with the voltage of the described node of described power connector, when described power connector is received described communication equipment, be used for being enabled in a switching circuit of described communication equipment.
3. power supply adaptor assembly according to claim 1 is characterized in that, described antenna is from selecting the following group,
An antenna, integrally related with described communication equipment; With
An exterior antenna is coupled to the described RF port of described power connector.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/178,195 US5410056A (en) | 1993-01-26 | 1994-01-06 | Method for the production of folic acid |
| US08/178,195 | 1994-01-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1119055A CN1119055A (en) | 1996-03-20 |
| CN1051886C true CN1051886C (en) | 2000-04-26 |
Family
ID=22651600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94191396A Expired - Lifetime CN1051886C (en) | 1994-01-06 | 1994-12-05 | Power adapter with integral radio frequency port |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1051886C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9363794B1 (en) * | 2014-12-15 | 2016-06-07 | Motorola Solutions, Inc. | Hybrid antenna for portable radio communication devices |
| CN110611150A (en) * | 2019-08-30 | 2019-12-24 | 联想(北京)有限公司 | Configuration device and electronic device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4903325A (en) * | 1987-06-30 | 1990-02-20 | Mitsubishi Denki Kabushiki Kaisha | Portable wireless communication apparatus |
-
1994
- 1994-12-05 CN CN94191396A patent/CN1051886C/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4903325A (en) * | 1987-06-30 | 1990-02-20 | Mitsubishi Denki Kabushiki Kaisha | Portable wireless communication apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1119055A (en) | 1996-03-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: MOTOROLA MOBILE CO., LTD. Free format text: FORMER OWNER: MOTOROLA INC. Effective date: 20101231 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20101231 Address after: Illinois Instrunment Patentee after: Motorola Mobility LLC Address before: Illinois Instrunment Patentee before: Motorola Inc. |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20141205 Granted publication date: 20000426 |