CN1612685A - Portable radio unit - Google Patents
Portable radio unit Download PDFInfo
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- CN1612685A CN1612685A CN 200410097476 CN200410097476A CN1612685A CN 1612685 A CN1612685 A CN 1612685A CN 200410097476 CN200410097476 CN 200410097476 CN 200410097476 A CN200410097476 A CN 200410097476A CN 1612685 A CN1612685 A CN 1612685A
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- portable radio
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Abstract
The portable type radio unit possesses three portions of part and functions. The first portion includes case, a cover possible to be opened and closed freely installed on the case, a bipolar antenna on the cover, feeder apparatus for feeding the bipolar antenna, and controller for controlling feeder apparatus based on closing or opening state of the cover to control the feeder apparatus. The second portion includes resonator setup on the case. When the cover is closed, the resonator is located near to place of the bipolar antenna. The third portion provides function of switching connection of first or second matching circuit with the feeder apparatus and the bipolar antenna based on closing or opening states.
Description
Technical field
The present invention relates to portable radio unit, relate in particular to portable radio unit with the antenna in cover (housing) portion freely of opening and closing that is arranged on (hereinafter referred to as lid (cover)).
Background technology
Disclose one on the Te Kaiping 8-186518 communique and opened and closed the example that covers radio communication device freely with antenna.
Above-mentioned lid antenna has the 1st and the 2nd assembly, when lid is opened the 1st assembly is tuned as the operating frequency that receives transtation mission circuit, when lid is closed the 2nd assembly is tuned as the operating frequency of reception transtation mission circuit.Therefore, no matter cover when opening or closing, the lid antenna can both be tuned as the operating frequency that receives transtation mission circuit.
But, in the above-mentioned document in the disclosed radio communication device, cover and have 2 antennas in fact, because the combination of these antenna may reduce antenna efficiency.And, in the above-mentioned lid antenna, 2 feed lines must be arranged, so mechanism is complicated, be not easy to the setting of feed line.
Summary of the invention
The present invention makes in order to address the above problem.The objective of the invention is, cover freely in the portable radio unit that antenna is set, when suppressing antenna efficient reduces, make being provided with of feed line simple in switching.
An aspect according to portable radio unit of the present invention has: casing, lid, dipole antenna, feeder equipment, open-close detection apparatus and feed control device.Lid opens and closes and is mounted freely on the casing.Dipole antenna is arranged on and covers.Feeder equipment is given the dipole antenna feed.Open-close detection apparatus detects the switching of lid.The feed control device is according to the testing result control feeder equipment of open-close detection apparatus.
Antenna is arranged on when covering, and is opening under the state of lid, because as general dipole antenna work, the frequency band of the reflection loss amount of pact-6dB can obtain about 20%.But, under the lid closing state, because antenna exists its frequency band to reduce to the problem of about 2% (Fig. 2 A) near the earthed conductor of the substrate of casing inside.Therefore, the present inventor through attentively research repeatedly, learns covering under the situation that a dipole antenna only is set, and by suitably controlling feeder equipment according to the switching of lid, also can guarantee to compare broad less than the frequency band of the reflection loss amount of setting.Particularly, as hereinafter described, for example adopt parallel 2 line formula feed lines as feeder equipment, work hard by the excitation orientation at this feed line, shown in Fig. 2 B, lid is when closing, also can guarantee pact-6dB the reflection loss amount frequency band about 15%.Thus, no matter cover when opening or closing and to come correspondence with an antenna, 2 antennas needn't be set as conventional example.Its result, reduction that can suppressing antenna efficient.And because 2 antennas needn't be set, it is easy that the setting of feed line also becomes.
Above-mentioned feeder equipment comprises parallel 2 line formula feed lines.In the case, under the state that lid is opened,, covering under the closing state with the parallel 2 line formula feed lines of cophase detector with the parallel 2 line formula feed lines of anti-phase excitation.Thus, no matter cover as mentioned above when opening or closing, can both guarantee the frequency band of the reflection loss amount of pact-6dB.
In addition, above-mentioned feeder equipment also can comprise coaxial line.Coaxial line has external conductor and inner conductor, and external conductor and casing short circuit encourage inner conductor under the state that lid is opened, and encourages external conductor under the lid closing state.
Like this by under the state of opening at lid, encouraging external conductor, obtain with the identical effect of the above-mentioned parallel 2 line formula feed lines of cophase detector.And, by encouraging inner conductor under the closing state at lid, obtain with the identical effect of the above-mentioned parallel 2 line formula feed lines of anti-phase excitation.Therefore, can infer no matter cover when opening or closing, can both guarantee the frequency band of the reflection loss amount of pact-6dB.
Interval between the short dot on the distributing point of external conductor and the external conductor and casing is preferably quarter-wave.
Thus, because the estimation impedance from the power supply to the short dot is infinitely great, so it is less to the influence of the impedance of distributing point to suppress short dot.
Have casing, lid, dipole antenna, feeder equipment, resonator on the other hand according to portable radio unit of the present invention.Lid opens and closes and is mounted freely on the casing.Dipole antenna is arranged on and covers.Feeder equipment is given the dipole antenna feed.Resonator is arranged on the casing, is configured in the position of covering close dipole antenna when closing.
When lid was closed, frequency band narrowed down usually.But,, can disperse the low frequency of reflection loss quantitative change by resonator being arranged on the above-mentioned position.Thus, for example, obtain the frequency characteristic shown in Fig. 7 B, its result can guarantee also that when lid is closed the frequency band of the reflection loss amount of pact-6dB compares broad.On the other hand, when lid is opened, shown in Fig. 7 A, also can guarantee the frequency band broad of the reflection loss amount of pact-6dB.No matter its result is covered when opening or closing, and can both guarantee the frequency band of the reflection loss amount of pact-6dB.
In addition, resonator can use a terminal shortcircuit, quarter-wave resonator that the other end is open or 1/2nd wave resonator of both ends open.
One side again according to portable radio unit of the present invention has: casing, lid, dipole antenna, feeder equipment, open-close detection apparatus, the 1st and the 2nd match circuit and the 1st and the 2nd diverter switch.Lid opens and closes and is mounted freely on the casing.Dipole antenna is arranged on and covers.Feeder equipment is given the dipole antenna feed.Open-close detection apparatus detects the switching of lid.The 1st diverter switch according to the testing result of open-close detection apparatus, is switched connection the 1st and the 2nd match circuit and feeder equipment.The 2nd diverter switch according to the testing result of open-close detection apparatus, is switched connection the 1st and the 2nd match circuit and dipole antenna.
Switch under the situation of match circuit according to the switching of lid as mentioned above,, can disperse the low frequency of reflection loss quantitative change with same under the situation that resonator is set.Thus, no matter cover when opening or closing, can both guarantee the frequency band of the reflection loss amount of pact-6dB.
In any one above-mentioned aspect, preferably dipole antenna extends along the direction vertical with the length direction of casing.
Thus, when the inclination casing was conversed, it is many that polarized wave composition perpendicular to the ground becomes, and improves with the consistency of the base station of vertically polarized wave.This also can strengthen the effect that suppressing antenna efficient reduces.
In addition, in every respect in, also the top of crooked dipole antenna simply also can bend to the top of dipole antenna snakelike.Thus, can shorten the physical length of antenna.
Description of drawings
Figure 1A is the summary construction diagram of the portable radio unit in the embodiments of the present invention 1.
Figure 1B is the block diagram that is used to illustrate feed method of the present invention.
Fig. 2 A represents in the portable radio unit shown in Figure 1A, antenna do not taked the reflection loss amount under the situation of any countermeasure and the relation of frequency during anti-phase excitation when lid is closed.
Fig. 2 B represents in the portable radio unit shown in Figure 1A, the reflection loss amount of the antenna when lid is closed during cophase detector and the relation of frequency.
Fig. 3 A is the summary construction diagram of the portable radio unit in the embodiments of the present invention 2.
Fig. 3 B be shown in Fig. 3 A the improved summary construction diagram of portable radio unit.
Fig. 4 A is the summary construction diagram of the portable radio unit in the embodiments of the present invention 3.
Fig. 4 B be shown in Fig. 4 A the part of portable radio unit enlarge side view.
Fig. 5 A is the summary construction diagram of the portable radio unit in the embodiments of the present invention 4.
Shown in Fig. 5 B presentation graphs 5A the lid of the portable radio unit state when closing.
Fig. 6 A is the summary construction diagram of the portable radio unit in the embodiments of the present invention 5.
Fig. 6 B is the circuit diagram of an example of the 1st match circuit among the presentation graphs 6A.
Fig. 6 C is the circuit diagram of an example of the 2nd match circuit among the presentation graphs 6A.
The reflection loss amount of the antenna when lid is opened of the portable radio unit of type shown in Fig. 7 A presentation graphs 5A and Fig. 6 A and the relation of frequency.
The reflection loss amount of the antenna when lid is closed of the portable radio unit of type shown in Fig. 7 B presentation graphs 5A and Fig. 6 A and the relation of frequency.
Embodiment
Use Figure 1A to Fig. 7 B that embodiments of the present invention are described below.
(execution mode 1)
Shown in Figure 1A, portable radio unit 1 has casing 2 (earthed conductor), opens and closes lid (renovating) 3, dipole antenna the 5, the 1st and the 2nd feed line 4a freely, 4b, RF (radio frequency Radio Frequency) power supply the 1st and the 2nd power supply 6a, 6b and cover open/close checking apparatus 7.
The the 1st and the 2nd feed line 4a, 4b, the 1st and the 2nd power supply 6a, 6b is as the feeder equipment work of dipole antenna 5.The the 1st and the 2nd feed line 4a, 4b are illustrated in figure 1 as parallel 2 line formula feed lines, and by power supply 6a, 6b is connected with casing 2 respectively for the 1st and the 2nd feed line 4a, 4b.The the 1st or the 2nd feed line 4a, the long L2 of electricity that half addition of 4b and dipole antenna 5 obtains are λ/4+N * λ/2 (N is the integer greater than 1).
3 switching is covered in cover open/close checking apparatus 7 detections, and cover open/close checking apparatus for example can use the spy to open disclosed checkout gear in the flat 6-291820 communique.According to the testing result of cover open/close checking apparatus 7, the 1st and the 2nd feed line 4a, the feed of 4b are given in control.
Particularly, cover 3 when opening being detected by cover open/close checking apparatus 7, with anti-phase excitation the 1st and the 2nd feed line 4a, 4b covers 3 when closing being detected by cover open/close checking apparatus 7, with cophase detector the 1st and the 2nd feed line 4a, 4b.
Under the situation shown in Figure 1A, by control the 1st and the 2nd power supply 6a with not shown control device, the action of 6b (feeder equipment) is controlled the 1st and the 2nd feed line 4a, the energized condition of 4b as mentioned above according to the switching of covering 3 according to lid 3 switching.
Under the state that lid is opened, because as general dipole antenna work, the reflection loss amount can obtain about 20% less than the frequency band of-6dB.Fig. 2 B represents to cover 3 frequency characteristics when closing.Can confirm that by Fig. 2 B the reflection loss amount can obtain about 15% less than the frequency band of-6dB.Therefore,, no matter cover when opening or closing, can both guarantee the frequency band of the reflection loss amount of pact-6dB by carrying out aforesaid feed control.
That is to say, on lid 3, be provided with under the situation of a dipole antenna 5, also can guarantee frequency band by suitably controlling feeder equipment according to the switching of lid 3 less than the reflection loss amount of setting.
Thus, no matter when lid 3 is opened or is closed, can both be with an antenna correspondence, needn't be as conventional example two antennas be set covering.Its result, reduction that can suppressing antenna efficient.And because two antennas needn't be set, it is easy that the setting of feed line also becomes.
In addition, also can shown in Figure 1B, a power supply 6 be set,, feed control device 8 be set between the 4b, feed control device 8 is connected with cover open/close checking apparatus 7 at power supply 6 and the 1st and the 2nd feed line 4a.In the case, also can encourage the 1st and the 2nd feed line 4a, 4b as mentioned above respectively according to the switching of lid 3.By the way, an example as feed control device 8 can list distributor etc.
(execution mode 2)
Next, use Fig. 3 A and 3B explanation embodiments of the present invention 2 and improvement thereof.
As shown in Figure 3A, in the embodiments of the present invention 2, the top of dipole antenna 5 is bent.Thus, the physics that can shorten dipole antenna 5 is long, makes dipole antenna 5 compacter.Other structure is identical with the situation of the execution mode 1 shown in Figure 1A.
In addition, as shown in Figure 3, the top of dipole antenna 5 also can be bent into snakelike.Also can obtain same effect in the case.
(execution mode 3)
Below, use Fig. 4 A and Fig. 4 B explanation embodiments of the present invention 3.Shown in Fig. 4 A, use coaxial line 9 in the present embodiment 3 as feed line.Coaxial line 9 has external conductor 9a and inner conductor 9b, external conductor 9a and casing short circuit.That is external conductor 9a ground connection.
In present embodiment 3, excitation inner conductor 9b under lid 3 states of opening, excitation external conductor 9a under lid 3 closing state.
Like this by excitation external conductor 9a under lid 3 closing state, obtain with the identical effect of the above-mentioned parallel 2 line formula feed lines of cophase detector.By excitation inner conductor 9b under lid 3 states of opening, obtain with the identical effect of the above-mentioned parallel 2 line formula feed lines of anti-phase excitation.
Therefore, can infer under the situation of embodiments of the present invention 3, no matter cover when opening or closing, with the frequency band that can guarantee the reflection loss amount of pact-6dB under the situation of execution mode 1 equally.
(execution mode 4)
Below, use Fig. 5 A and Fig. 5 B, embodiments of the present invention 4 are described.
Present embodiment 4 and the execution mode 5 described inventions of narrating later are used to the frequency band that uses two to separate.
Under lid 3 states of opening, owing to can make radioactive department leave human body, so have the advantage that the efficient that can suppress to be caused by human body reduces.But on the other hand, under lid 3 closing state, frequency band narrows down usually, and existence can not cover the shortcoming of the frequency band of two separation.Therefore, use resonant circuit, disperse the low frequency of reflection loss quantitative change.
As a kind of method for this purpose, in the execution mode 4 shown in Fig. 5 A, resonator 9 is arranged on the casing 2.Resonator 9, shown in Fig. 5 B, be configured in cover 3 when closing near the position of dipole antenna 5, encourage in the noncontact mode by dipole antenna 5.In addition, can use same dipole antenna 5 and feeder equipment thereof under the situation with each above-mentioned execution mode.
By resonator 9 is arranged on above-mentioned position, can disperse the low frequency of reflection loss quantitative change.For example can obtain the frequency characteristic shown in Fig. 7 B.That is, when lid 3 is closed, can guarantee the frequency band of the reflection loss amount of the 2 pact-6dB of place.
On the other hand, when lid 3 is opened, owing to, shown in Fig. 7 A, can guarantee the frequency band broad of the reflection loss amount of pact-6dB as general dipole antenna work.No matter its result is covered when opening or closing, and can both guarantee the frequency band of the reflection loss amount of pact-6dB.
In addition, resonator 9 can use a terminal shortcircuit, λ/4 resonators (length L 4 is the resonator of λ/4+N * λ/2 (N is the integer greater than 1)) that the other end is open or λ/2 resonators (length is the resonator of N * λ/2 (N is the integer greater than 1)) of both ends open.Also can adopt for example tabular, wire, snakelike, spiral resonator as resonator 9 in addition.
(execution mode 5)
Below, use Fig. 6 A to Fig. 6 B explanation embodiments of the present invention 5.In the present embodiment 5,, make the frequency of closing time-division scattered reflection attenuation step-down at lid 3 by switching match circuit with switch.
As shown in Figure 6A, the portable radio unit 1 in the present embodiment 5 has: the 1st and the 2nd match circuit the 12,13, the 1st and the 2nd diverter switch 14,15 and power supply 6.
The 1st match circuit 12 is connected with dipole antenna 5 when lid 3 is opened.The 2nd match circuit 13 is connected with dipole antenna 5 when lid 3 is closed.
Fig. 6 B and Fig. 6 C represent the structure example of the 1st and the 2nd match circuit 12,13.Shown in Fig. 6 B and Fig. 6 C, the 1st and the 2nd match circuit 12,13 has electric capacity 16 and coil 17 respectively.
The 1st diverter switch 14 according to the testing result of open-close detection apparatus 7, is switched connection the 1st and the 2nd match circuit 12,13 and power supply 6 as mentioned above.The 2nd diverter switch 15 is switched connection the 1st and the 2nd match circuit 12,13 and dipole antenna 5 according to the testing result of open-close detection apparatus 14.That is, when lid 3 is opened, the 1st match circuit 12 is connected with dipole antenna 5 with power supply 6, when lid 3 is closed, the 2nd match circuit 13 is connected with dipole antenna 5 with power supply 6.In addition, also can use coaxial line 9 feed line in addition.
Can think under the situation of present embodiment,, can obtain the characteristic shown in Fig. 7 A and Fig. 7 B with identical under the situation of execution mode 4.Therefore, no matter when lid 3 is opened or closed, can both guarantee the frequency band of the reflection loss amount of pact-6dB.
As above embodiments of the present invention are illustrated, but also can carry out appropriate combination the feature of each execution mode.And, will be understood that this disclosed execution mode to have a few all be example, be not to be used for restriction.Scope of the present invention comprises the scope of claim and all changes in the equal meaning and the scope by the scope indication of claim.
Industrial applicability
The present invention effectively is applicable to opening and closing the lid (renovating) be arranged on the casing freely and establishes Put the portable radio unit of antenna.
Claims (8)
1. portable radio unit has:
Casing (2);
Switching is mounted freely on the lid (3) on the said machine casing (2);
Be arranged on the dipole antenna (5) on the above-mentioned lid (3);
Be used for feeder equipment (6) to above-mentioned dipole antenna (5) feed;
Be arranged on the resonator (9) on the said machine casing (2),
Above-mentioned resonator (9) is configured in the position of above-mentioned lid (3) close above-mentioned dipole antenna (5) when cutting out.
2. portable radio unit as claimed in claim 1, above-mentioned resonator (9) comprises a terminal shortcircuit, the quarter-wave resonator that the other end is open.
3. portable radio unit as claimed in claim 1, above-mentioned resonator (9) comprises the resonator of 1/2nd wavelength of both ends open.
4. portable radio unit as claimed in claim 1, above-mentioned dipole antenna (5) extends along the direction vertical with the length direction of said machine casing (2).
5. portable radio unit as claimed in claim 1, the top bending of above-mentioned dipole antenna (5).
6. portable radio unit has:
Casing (2);
Switching is mounted freely on the lid (3) on the said machine casing (2);
Be arranged on the dipole antenna (5) on the above-mentioned lid (3);
Be used for feeder equipment (6) to above-mentioned dipole antenna (5) feed;
Detect the open-close detection apparatus (7) of the switching of above-mentioned lid (3);
The the 1st and the 2nd match circuit (12,13);
Be used for testing result, switch the 1st diverter switch (14) that connects the above-mentioned the 1st and the 2nd match circuit (12,13) and above-mentioned feeder equipment (6) according to above-mentioned open-close detection apparatus (7);
Be used for testing result, switch the 2nd diverter switch (15) that connects the above-mentioned the 1st and the 2nd match circuit (12,13) and above-mentioned dipole antenna (5) according to above-mentioned open-close detection apparatus (14).
7. portable radio unit as claimed in claim 6, above-mentioned dipole antenna (5) extends along the direction vertical with the length direction of said machine casing (2).
8. portable radio unit as claimed in claim 6, the top bending of above-mentioned dipole antenna (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410097476 CN1612685A (en) | 2000-06-12 | 2000-06-12 | Portable radio unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410097476 CN1612685A (en) | 2000-06-12 | 2000-06-12 | Portable radio unit |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN00811709A Division CN1370341A (en) | 2000-06-12 | 2000-06-12 | Portable radio unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1612685A true CN1612685A (en) | 2005-05-04 |
Family
ID=34766604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410097476 Pending CN1612685A (en) | 2000-06-12 | 2000-06-12 | Portable radio unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1612685A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103633451A (en) * | 2012-08-27 | 2014-03-12 | 华为终端有限公司 | Dual feed point antenna system and feed point switching method |
-
2000
- 2000-06-12 CN CN 200410097476 patent/CN1612685A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103633451A (en) * | 2012-08-27 | 2014-03-12 | 华为终端有限公司 | Dual feed point antenna system and feed point switching method |
| US9172138B2 (en) | 2012-08-27 | 2015-10-27 | Huawei Device Co., Ltd. | Dual-feedpoint antenna system and method for feedpoint switchover of dual-feedpoint antenna system |
| CN103633451B (en) * | 2012-08-27 | 2015-12-02 | 华为终端有限公司 | The method that double-fed point antenna system and feedback point thereof switch |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |