CN205812117U

CN205812117U - A kind of mobile phone based on GSM R

Info

Publication number: CN205812117U
Application number: CN201620744381.9U
Authority: CN
Inventors: 张英
Original assignee: Beijing Aowei Technology Co Ltd
Current assignee: Beijing Aowei Technology Co Ltd
Priority date: 2016-07-14
Filing date: 2016-07-14
Publication date: 2016-12-14
Anticipated expiration: 2026-07-14

Abstract

The utility model discloses a kind of mobile phone based on GSM R, including antenna, incorporating filter and MODEM modem communication module, described antenna is connected with MODEM modem communication module, described incorporating filter is configured at inside MODEM communication module, and described incorporating filter is high-frequency narrow-band wave filter.Mobile phone based on GSM R in this utility model, its performance is good, typically can be at more than 50dB to IM3 AF panel.Additionally, the technical program is simple and reliable, it is not necessary to complicated radio circuit, it is not necessary to too many RF Components.Further, since the volume of described high-frequency narrow-band wave filter is 3.0x 3.0x 1.1mm³, volume is little, lightweight.Comparing the method using external bulkiness wave filter before, the scheme in this utility model will not increase circuit board size, can meet the regulation to GSM R mobile phone overall dimensions.

Description

A kind of mobile phone based on GSM-R

Technical field

This utility model relates to GSM-R high-power communication module field, particularly to a kind of mobile phone based on GSM-R.

Background technology

The high ferro that Railway Mobile Radio develops rapidly the most at present, its translational speed is fast, and residing communication environment ratio More severe.The occasion that the mobile phone of GSM-R uses includes train, yard etc., requires the highest to mobile phone communication performance, particularly communicates Radio-frequency performance the most crucial.The mainly 3 rank intermodulation distortion (IM3) of Radio frequency interference are caused currently for GSM-R mobile phone, Total interference has exceeded 90%.So, solving IM3 interference is the technical barrier that Railway Mobile Radio is paid close attention to for a long time.

Cause the reason that the mobile phone IM3 of GSM-R disturbs according to source difference, can be divided into two classes:

One class is disposed due to external network and frequency planning aspect causes, and another kind of is the non-thread due to radio-frequency devices Property causes.Solution includes transmitting terminal and receiving terminal technical scheme, and transmitting terminal technical scheme is the conjunction by network side Reason plan frequency uses, and coordinates heterogeneous networks, optimizes network configuration etc. and avoids the generation of IM3 interference signal.But due to bar Part limits, and such as frequency usage is restricted, coordination between different operators etc., as long as a certain item condition does not possesses, and interference Signal is impossible to stop completely.

Fig. 1 is RF front-end circuit handling process schematic diagram in prior art, general RF front-end circuit process according to Following flow process is carried out:

Antenna 1-> high-frequency narrow-band wave filter 2-> high frequency amplifier 3-> be mixed 4 (are down to intermediate frequency or directly drop to zero-frequency)- > (intermediate frequency or zero-frequency) filtering 5-> Base-Band Processing 6

Receive the technical method of side antagonism IM3 interference at GSM-R mobile phone, the first scheme is to use circumscribed wave filter. In conventional solution, the high-frequency narrow-band wave filter in said process is used high performance filter, is conventional means.But The shortcoming of this high-performance high-frequency narrow band filter meeting anti-IM3 interference is the most obvious: such as volume ratio is relatively big, heavy. For GSM-R mobile phone, volume and weight has the upper limit to specify, such wave filter is difficult to use on actual mobile phone. Performance is difficult to ensure that simultaneously, and the wave filter docking collection of letters number itself also has certain decay, and cost is high.

Receive the technical method of side antagonism IM3 interference at GSM-R mobile phone, another kind of scheme is to increase the reception end-fire of complexity Frequency processes.Based on foregoing radio frequency processing flow process, increase processes circuit.Handling process reforms into:

Antenna-> (high-frequency narrow-band wave filter-> high frequency amplifier-> be mixed to intermediate frequency-> intermediate frequency filtering-> be mixed to high frequency)- > high-frequency narrow-band wave filter-> high frequency amplifier-> mixing (be down to intermediate frequency or directly drop to zero-frequency)-> (intermediate frequency or zero-frequency) Filtering-> Base-Band Processing

Part in above-mentioned bracket represents the handling process newly increased, and basic ideas are before conventional radio frequency processes, first Radiofrequency signal being dropped to intermediate frequency, processes abatement IM3 interference after filtering at intermediate frequency, mixing returns to radio frequency, then the most again It is further continued for traditional radio frequency processing.Although this class method can be avoided using the volume used in above-mentioned first kind method the most stupid The high-frequency narrow-band wave filter of weight.But, this kind of method also has significant drawback: process complexity, and technical difficulty is high, and quality is unstable. Newly-increased radio frequency processing is while abatement IM3 interference, and itself is also new interference source, and in implementing, technical difficulty is very big, separately It is the biggest that the realization of outer different vendor is likely to performance difference.Generally, scheme is the most complicated, is more difficult to the reliable of quality assurance, But for GSM-R mobile phone, reliable in quality is stably a basic demand.The most relatively costly, components and parts are numerous, exploitation difficulty Degree is very big, results in being greatly improved of hardware cost.And cannot be integrated, it is unfavorable for the miniaturization of mobile phone.Due to numerous discrete RF Components, it is impossible to integrated.

Utility model content

The technical problems to be solved in the utility model is, solves GSM-R mobile phone 3 rank Intermodulation Interference (IM3).

Solving above-mentioned technical problem, this utility model provides a kind of mobile phone based on GSM-R, including antenna, built-in filter Ripple device and MODEM modem communication module,

Described antenna is connected with MODEM modem communication module, and described incorporating filter is configured at MODEM communication module Inside, described incorporating filter is high-frequency narrow-band wave filter.

Further, the volume of described high-frequency narrow-band wave filter is 3.0x 3.0x 1.1mm³。

Further, described MODEM communication module is connected with described outer handset circuit.

Further, described incorporating filter is embedded in inside described MODEM communication module.

Further, the working frequency range of mobile phone is up 885-889MHz.

Further, the working frequency range of mobile phone is descending 930-934MHz.

Further, mobile phone also includes physical keyboard, is provided with numeral keys and alphabetic keypad, institute on described physical keyboard Stating numeral keys is 0-9 alpha-numeric keys；Described alphabetic keypad includes, the special letter of C, D, G, Z, T, K, N, L, Y, A engine number Key.

Further, described incorporating filter is configured at inside MODEM communication module, in order to carry out high-frequency narrow-band filtering, High frequency amplification, chaos, filtering and Base-Band Processing.

Further, coverage mode includes: great Qu system and Small Section Mode.

Further, mobile phone is also connected with SIM, in order to ask access GSM-R network.

Further, mobile phone is also connected with base station, in order to access GSM-R network.

The beneficial effects of the utility model:

1) mobile phone based on GSM-R in this utility model is logical including antenna, incorporating filter and MODEM modulation /demodulation Letter module, described antenna is connected with MODEM modem communication module, and described incorporating filter is configured at MODEM communication module Inside, described incorporating filter is high-frequency narrow-band wave filter.The performance of mobile phone is good, typically can be at 50dB to IM3 AF panel Above.By experimental verification, in the range of the application band of GSM-R, representative value is at more than 50dB, and this is a highly significant Performance boost.Additionally, the technical program is simple and reliable, it is not necessary to complicated radio circuit, it is not necessary to too many RF Components, It is achieved that it is simple.

2) it is 3.0x 3.0x 1.1mm due to the volume of described high-frequency narrow-band wave filter³, volume is little, lightweight.Compare it The method of front use external bulkiness wave filter, the scheme in this utility model will not increase circuit board size, and it is right to meet The regulation of GSM-R mobile phone overall dimensions.

3) it is connected with described outer handset circuit due to described MODEM communication module, GSM-R mobile communication can be realized, Increasing the scheme of complicated radio frequency processing in the prior art that compares, the cost of this technology is relatively low.

Accompanying drawing explanation

Fig. 1 is RF front-end circuit handling process schematic diagram in prior art.

Fig. 2 is mobile phone schematic diagram based on GSM-R in this utility model one embodiment.

Fig. 3 is mobile phone schematic diagram based on GSM-R in this utility model one preferred embodiment.

Detailed description of the invention

For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with specific embodiment, and Referring to the drawings, this utility model is further described.

Refer to Fig. 2 is mobile phone schematic diagram based on GSM-R in this utility model one embodiment.

A kind of based on GSM-R mobile phone in the present embodiment, including antenna 1, incorporating filter 10 and MODEM modulation /demodulation Communication module 100, described antenna is connected with MODEM modem communication module, and described incorporating filter is configured at MODEM communication Inside modules, described incorporating filter is high-frequency narrow-band wave filter.The performance of the mobile phone in this utility model is good, disturbs IM3 Suppression typically can be at more than 50dB.By experimental verification, in the range of the application band of GSM-R, representative value at more than 50dB, This is the performance boost of a highly significant.Further, the volume of described high-frequency narrow-band wave filter is 3.0x 3.0x 1.1mm³, volume is little, lightweight.Comparing the method using external bulkiness wave filter before, the scheme in this utility model will not Increase circuit board size, the regulation to GSM-R mobile phone overall dimensions can be met.Further, described incorporating filter is embedded Inside described MODEM communication module.Preferred as in the present embodiment, working frequency range is up 885-889MHz, work frequency Section is descending 930-934MHz, meets the working frequency range of mobile phone based on GSM-R.Preferred as in the present embodiment, described in Put wave filter and be configured at inside MODEM communication module, in order to carry out high-frequency narrow-band filtering, High frequency amplification, chaos, filtering and base Tape handling, is realized by an independent communication MODEM module.Preferred as in the present embodiment, the mobile phone covering side of GSM-R Formula includes: great Qu system and Small Section Mode.Preferred as in the present embodiment, the mobile phone of GSM-R is also connected with SIM, in order to ask Access GSM-R network.Preferred as in the present embodiment, the mobile phone of GSM-R is also connected with base station, in order to access GSM-R network.

Mobile phone based on GSM-R in the present embodiment, the key component of its antagonism IM3 interference is high-frequency narrow-band filtering Device, this wave filter is different from that bulky class of the prior art, but compact performance simultaneously is the most excellent.This This Filtering Processing part of sample just perfectly can form at small and exquisite and wieldy high performance communication with other handling components Reason module, it is only necessary to plus antenna and other peripheral processes circuit, be achieved that the complete hardware scheme of mobile phone.

The size of wave filter used in the technical program: 3.0x 3.0x 1.1mm³, volume is the smallest and the most exquisite, to hardware circuit The area occupied of plate is the least, and this is also the major reason why this wave filter can realize in modem inside modules.

The performance parameter of this wave filter, such as following table:

Attenuation decays	\| representative value
			10.00…918.00MHz	47	dB
918.00…921.00MHz	56	dB
			943.00…946.00MHz	56	dB
946.00…1000.00MHz	56	dB
			1000.00…1500.00MHz	50	dB
1500.00…2600.00MHz	35	dB

As seen from the above table, in the range of the application band of GSM-R, representative value is at more than 50dB, and this is a highly significant Performance boost.Owing to wave filter realizes inside modem, so all there is no any impact for mobile phone peripheral circuit etc., real Existing scheme is simple, simple scheme, it is easier to that does is reliable, thus scheme described herein to be applicable to reliability requirement high Scene.Meanwhile, this programme is the least to the development difficulty of technical staff.So the program is easy of use and promotes.

A kind of based on GSM-R mobile phone in the present embodiment, including antenna 1, incorporating filter 10 and MODEM modulation /demodulation Communication module 100, described antenna is connected with MODEM modem communication module, and described incorporating filter is configured at MODEM communication Inside modules, described incorporating filter is high-frequency narrow-band wave filter.The performance of the mobile phone in this utility model is good, disturbs IM3 Suppression typically can be at more than 50dB.By experimental verification, in the range of the application band of GSM-R, representative value at more than 50dB, This is the performance boost of a highly significant.Preferred, outside described MODEM communication module is with described mobile phone as in the present embodiment Portion's circuit connects.The modem scheme of inline filter in the present embodiment, will not have extra demand to the area of PCB, can be light Meet the industry standard regulation to the overall dimensions of GSM-R mobile phone.

In certain embodiments, mobile phone based on GSM-R itself has dummy keyboard and two kinds of keyboards of physical button, two kinds Keyboard all has identical input operation；Dummy keyboard all has the simplified keyboard that railway locomotive number registration provides special, this key Dish is divided into numeric keypad and alphabetic keypad, and numeric keypad includes these ten alpha-numeric keys of 0-9, and alphabetic keypad letter includes C, D, G, Z, T, K, N, L, Y, A these ten special letter keys of engine number；Function selecting and the directionkeys of page turn over operation.Wherein, Dummy keyboard is the simplification input keyboard of the specific input of train number of railway: provide 10 letters and numeral that input train number needs Key, switching letter/number button and directionkeys.

Those of ordinary skill in the field it is understood that more than, described be only specific embodiment of the utility model and , it is not limited to this utility model, all within spirit of the present utility model and principle, any amendment of being made, equivalent Replacement, improvement etc., within should be included in protection domain of the present utility model.

Claims

1. a mobile phone based on GSM-R, it is characterised in that include antenna, incorporating filter and MODEM modem communication mould Block,

Described antenna is connected with MODEM modem communication module, and described incorporating filter is configured in MODEM communication module Portion, described incorporating filter is high-frequency narrow-band wave filter.

Mobile phone the most according to claim 1, it is characterised in that the volume of described high-frequency narrow-band wave filter is 3.0x3.0x1.1mm³。

Mobile phone the most according to claim 1, it is characterised in that described MODEM communication module and described outer handset circuit Connect.

Mobile phone the most according to claim 1, it is characterised in that described incorporating filter is embedded in described MODEM communication mould Inside block.

Mobile phone the most according to claim 1, it is characterised in that working frequency range is up 885-889MHz, working frequency range is Descending 930-934MHz.

Mobile phone the most according to claim 1, it is characterised in that also include physical keyboard, is arranged on described physical keyboard Having numeral keys and alphabetic keypad, described numeral keys is 0-9 alpha-numeric keys；Described alphabetic keypad includes, C, D, G, Z, T, K, The special letter key of N, L, Y, A engine number.

Mobile phone the most according to claim 1, it is characterised in that described incorporating filter is configured in MODEM communication module Portion, in order to carry out high-frequency narrow-band filtering, High frequency amplification, chaos, filtering and Base-Band Processing.

Mobile phone the most according to claim 1, it is characterised in that coverage mode includes: great Qu system and Small Section Mode.

Mobile phone the most according to claim 1, it is characterised in that be also connected with SIM, in order to ask access GSM-R network.

Mobile phone the most according to claim 1, it is characterised in that be also connected with base station, in order to access GSM-R network.