JP2003289255A - Power controller, multi-band transmitter, and multi- mode radio device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a power controller which maintains the level of desired one of a plurality of radio frequency signals whose occupation band differs at a desired value services in a power control device, a multi-band transmitter having the controller and a multi-mode radio device, which can be adapted to various types of multi-bands and multi-mode. <P>SOLUTION: The power controller device includes a plural-n distribution means which individually distributes to succeeding stages the plural-n radio frequency signals whose occupation bands differ, a plural-n level measuring means which individually measures the levels of these plural-n radio frequency signals distributed to succeeding stages a selection means which selects one of the levels of the radio frequency signals measured by the level measuring means and externally specified, and a level control means which maintains the gain of one of the distribution means which distributes the radio frequency signal externally specified, so that a deviation of the selected level to a specified threshold value is suppressed. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power control device for maintaining a desired level of a radio frequency signal designated from the outside among a plurality of radio frequency signals having different occupied bands, and a plurality of these radio frequency signals. The present invention relates to a multi-band transmission device that transmits any one of frequency signals through the transmission power device, and a multi-mode wireless device that accesses any of various wireless transmission paths of different systems via the transmission power device.

[0002]

2. Description of the Related Art In recent years, the number of subscribers of mobile communication systems has increased rapidly due to market liberalization and competition of multiple carriers, and the terminals of these subscribers have various roaming areas over a wide area. Services are being requested to be provided. However, the wireless transmission lines used to provide communication services to many of these subscribers are compatible with various zone configurations, channel arrangements, multiple access schemes, etc. For the purpose of effective use of the frequency band, it is formed by being dispersed in different frequency bands such as 800 MHz band and 1.5 GHz band.

Further, a subscriber who is to be provided with a communication service in any of a plurality of wireless zones individually formed in these different frequency bands is provided with a wireless base station through any of these frequency bands. A dual band terminal device that can form a desired wireless transmission path between the two is applied. In addition, the power of the transmission wave signal transmitted by such a dual band terminal device is appropriately set based on a channel control procedure for maintaining a desired transmission quality in cooperation with a radio base station or a base station control station. In addition, it must be maintained accurately and stably even if the power supply voltage changes and other environmental conditions change.

FIG. 4 is a diagram showing an example of the configuration of a transmission section of a conventional dual band terminal device. In the figure, the modulator 7
The transmission information is input to the modulation input 1 and the modulation unit 71
A predetermined carrier signal is input to the carrier input of. The output of the modulator 71 is sent to the power amplifier 7 via the frequency converter 72.
3-1 and 73-2 are connected, and a local oscillator signal is input to the local oscillator input of the modulator 71. These power amplifiers 7
The outputs of 3-1 and 73-2 are configured to include an antenna 74, and are connected to an antenna system 75 that realizes sharing of the antenna 74. The monitor terminal of the power amplifier 73-1 is connected to the control input of the power amplifier 73-1 via the APC section 76-1, and the monitor terminal of the power amplifier 73-2 is connected to the APC section 7-1.
It is connected via 6-2 to the control input of the power amplifier 73-2.

In the dual band terminal device having such a configuration, the modulator 71 generates a modulated signal by quadrature modulating the above-mentioned carrier signal according to the above-mentioned transmission information. The frequency converter 72 uses the frequency of the above-described local oscillation signal as the modulated signal (hereinafter, for simplification, one of the 800 MHz band and the 1.5 GHz band which is to be accessed under channel control). The transmission wave signal is generated by performing frequency conversion according to (1).

The power amplifiers 73-1 and 73-2 correspond to the above-mentioned 800 MHz band and 1.5 GHz band, respectively, and under the channel control described above, the frequency conversion section 72.
Only the one corresponding to the local oscillator signal given to is activated.
Therefore, when the occupied band of the transmission wave signal generated by the frequency conversion unit 72 belongs to the 800 MHz band (1.5 GHz band), the transmission wave signal is output by the power amplifier 73-1 (73-2). Amplified, antenna system 7
5 (antenna 74) to a radio base station (not shown) at a predetermined level.

The monitor terminal of the power amplifier 73-1 (73-2) monitors a level proportional to the level of the transmission wave signal given to the antenna system 75 by the power amplifier 73-1 (73-2). A signal is output here (for simplicity, it is assumed that the occupied band is equal to the occupied band of the corresponding transmission wave signal). The APC unit 76-1 (76-2) is assumed to be a prescribed threshold value (here, for simplicity, it is a known value corresponding to the prescribed value of the level of the transmission wave signal to be given to the antenna system 75. ), The deviation of the level of the monitor signal is obtained.

Since the power amplifier 73-1 (73-2) increases or decreases the gain according to the instantaneous value of this control signal, the antenna system 75
No matter whether the occupied band of the transmission wave signal given to the power transmission system belongs to either the 800 MHz band or the 1.5 GHz band, the level of the transmission wave signal is caused by "variation of power supply voltage, characteristics of each part, and the like". The resulting deviation is constantly compressed.

[0009]

By the way, in the above-mentioned conventional example, although the APC units 76-1 and 76-2 operate effectively only one of them at a time,
It was installed as hardware individually corresponding to the 00 MHz band and the 1.5 GHz band, and consumed some power even when it was not operating. Therefore, in the conventional dual band terminal device, generally, the size reduction, the weight reduction, the cost reduction and the power saving which are strictly required for the terminal of the mobile communication system have not necessarily been sufficiently achieved.

The present invention provides a power control device, a multi-band transmission device and a multi-mode wireless device which can flexibly adapt to a desired multi-band or multi-mode inexpensively and surely without deterioration in performance. With the goal.

[0011]

FIG. 1 is a block diagram showing the principle of the present invention. In the invention described in claim 1, the distributing means 11-1 to 11-n individually distribute a plurality of n radio frequency signals having different occupied bands to the subsequent stage. Level measuring means 12-1 ~
The 12-n individually measures the levels at which the above-described plurality of n radio frequency signals are distributed to the subsequent stage by the distribution means 11-1 to 11-n. The selection means 13 selects the level of the radio frequency signal designated from the outside from these measured levels. The level control means 14 has a value that suppresses the deviation of the level thus selected with respect to the specified threshold value, and the wireless means designated from the outside as described above among the distribution means 11-1 to 11-n. Maintaining the gain of the distribution means to distribute the frequency signal.

That is, the selection means 13 and the level control means 14 set the radio frequencies of the above-mentioned radio frequency signals of n to the levels individually measured by the level measurement means 12-1 to 12-n. By performing the above-described processing in the band lower than the occupied band of the frequency signal or in the baseband region, the level to be distributed to the subsequent stage described above can be accurately maintained constant.

Therefore, as compared with the conventional example in which a plurality of n level control means for individually varying the gains of the distribution means 11-1 to 11-n are provided, the configuration is improved without significantly lowering the accuracy and responsiveness. It is simplified. According to the invention of claim 2,
The level control means 14 is provided at a later stage of the distribution means 11-1 to 11-n on the basis of a newly started calculation procedure each time a new radio frequency signal is designated from the outside. Find a value at which the gain of the distribution means for distributing the new radio frequency signal should be maintained.

That is, every time the radio frequency signal to be distributed to the subsequent stage is switched, the gain of the distributing means corresponding to the radio frequency signal is the gain of the distributing means which has distributed the radio frequency prior to the latter stage. Is newly set without being reflected. Therefore, there is a large difference in level between the plurality of n radio frequency signals described above, or the distribution means 11
Even if there is a large deviation in the gain or the characteristics of -1 to 11n, the responsiveness related to the switching of the radio frequency signal to be distributed to the subsequent stage can be accurately and uniformly maintained.

According to the third aspect of the invention, the level control means 14 designates the distribution means 11-1 to 11-n from the outside in advance every time a new radio frequency signal is designated from the outside. The information necessary for inheriting the gain of the distributing means that has distributed the preceding radio frequency signal to the subsequent stage is associated with the preceding radio frequency signal to be preserved, and is preserved in association with the new radio frequency signal. By applying the existing information, the value at which the gain of the distribution means for distributing the new radio frequency signal to the subsequent stage should be maintained is obtained.

That is, no matter which order and interval the radio frequency signals to be distributed to the subsequent stage are switched, the distributing means corresponding to each individual radio frequency signal precedes the similar radio frequency signal to the latter stage. The gain of the distribution means that realized the distribution is promptly reapplied and subsequently updated accordingly. Therefore, even when the difference in level between the plurality of n radio frequency signals is large, the radio frequencies to be distributed to the subsequent stage unless the gains and characteristics of the distribution means 11-1 to 11-n change significantly. High responsiveness related to signal switching is maintained.

In the invention described in claim 4, the distribution means 22
-1 to 22-n are antenna systems 2 in which a plurality n of radio frequency signals having different occupied bands are shared for transmission of these radio frequency signals.
Distribute individually to 1. Level measuring means 23-1 to 23-n
Separately measures the level at which the plurality of n radio frequency signals are distributed to the antenna system 21 by the distribution means 22-1 to 22-n. The selection means 24 selects the level of the radio frequency signal designated from the outside, from these measured levels. The level control means 25 has a value that suppresses the deviation of the level thus selected with respect to the prescribed threshold value, and the radio frequency signal designated from the outside of the distribution means 22-1 to 22-n. Maintain the gain of the distribution means which should distribute.

That is, the selection means 24 and the level control means 25 set the radio frequencies of the above-mentioned radio frequency signals of n to the levels individually measured by the level measurement means 23-1 to 23-n. By performing the above-described processing in the band lower than the occupied band of the frequency signal or in the baseband region, the level to be supplied to the antenna system 21 can be accurately maintained constant.

Therefore, as compared with the conventional example in which a plurality of n level control means for individually varying the gains of the distribution means 22-1 to 22-n are provided, the structure and the responsiveness are not significantly reduced. It is possible to simplify and flexibly adapt to various bands. According to the invention of claim 5,
The distributing means 31-1 to 31-n individually distribute a plurality of n radio frequency signals having different occupied bands and different adaptive multiple access schemes, modulation schemes, channel arrangements, and zone configurations to a subsequent stage. To do. Level measuring means 32-1 to 3
The 2-n individually measures the levels at which the above-described plurality of radio frequency signals of n are distributed to the subsequent stage by the distribution means 31-1 to 31-n. The selection means 33 selects the level of the radio frequency signal designated from the outside, from these measured levels. The level control means 34 selects a radio frequency signal externally designated from among the distribution means 31-1 to 31-n to a value at which the deviation of the level thus selected with respect to the prescribed threshold value is suppressed. Maintain the gain of the distribution means which should distribute.

That is, the selection means 33 and the level control means 34 set the radio levels of the above-mentioned radio frequency signals of n to the levels individually measured by the level measurement means 32-1 to 32-n. By performing the above-described processing in the band lower than the occupied band of the frequency signal or in the baseband region, the level to be distributed to the subsequent stage described above can be accurately maintained constant.

Therefore, compared with the conventional example in which a plurality of n level control means for individually varying the gains of the distribution means 31-1 to 31-n are provided, the accuracy and the responsiveness are not significantly reduced, and the structure is improved. It is simplified and can be flexibly adapted to various methods. In the invention of the subordinate concept of the invention described in claim 1 to claim 3, the level control means 14 includes the distribution means 11-1 to 11-n in units of symbols indicated by an externally designated radio frequency signal. In the latter part, the gain of the distributing means for distributing the radio frequency signal is updated.

That is, even if all the signal points that can be represented by the radio frequency signals to be distributed in the subsequent stage are not arranged on a single circle in the signal space, the above-mentioned plural n radio frequency signals The transmission quality is maintained high regardless of the order or intervals at which the above-mentioned switching is performed. In the invention of the first subordinate concept of the invention described in claim 4, the level control means 25 is distributed based on the procedure of the operation newly activated each time a new radio frequency signal is designated from the outside. The antenna system 21 among the means 22-1 to 22-n
Then, a value for maintaining the gain of the distribution means for distributing the new radio frequency signal is obtained.

That is, each time the radio frequency signal to be supplied to the antenna system 21 is switched, the gain of the distributing means corresponding to the radio frequency signal is distributed to the distributing means which has distributed the radio frequency prior to the latter stage. Is newly set without any reflection of the gain. Therefore, even if there is a large level difference between the plurality of n radio frequency signals described above or a large deviation in the gain or characteristics of the distribution means 22-1 to 22-n, it should be supplied to the antenna system 21. The responsiveness related to switching of the radio frequency signal is accurately and uniformly maintained.

In the invention of a second subordinate concept to the invention described in claim 4, the level control means 25 is arranged so that each time a new radio frequency signal is designated from the outside, the level control means 25 is operated by the distribution means 22-1 to 22-n. The information necessary for inheriting the gain of the distribution means which previously distributed the preceding radio frequency signal designated from the outside to the antenna system 21 is associated with the preceding radio frequency signal and preserved. By applying the information that was preserved in association with the radio frequency signal, the antenna system 21
Then, a value for maintaining the gain of the distribution means for distributing the new radio frequency signal is obtained.

That is, no matter which order and interval the radio frequency signals to be supplied to the antenna system 21 are switched, the distribution means corresponding to each radio frequency signal is preceded by the same radio frequency signal for the latter stage. The gain of the distribution means that realized the distribution of the signal is immediately reapplied and subsequently updated accordingly. Therefore, even if there is a large difference in the level of the plurality of n radio frequency signals described above, it should be supplied to the antenna system 21 unless the gains and characteristics of the distribution means 22-1 to 22-n change significantly. Responsiveness for switching the radio frequency signal is maintained high.

In the invention related to the fourth aspect of the invention, the radio frequency signal designated from the outside is updated based on the procedure of channel control and / or call setup. That is, the level of any radio frequency signal specified based on the procedure of channel control or call setup is accurately and flexibly maintained at a predetermined value.

Therefore, it is possible to flexibly adapt to various multiple access methods, zone configurations, and channel arrangements.
In the invention of the first subordinate concept of the fifth aspect of the invention, the level control means 34 distributes the signal based on a newly activated calculation procedure every time a new radio frequency signal is designated from the outside. Among the means 31-1 to 31-n, a value for maintaining the gain of the distributing means for distributing the new radio frequency signal in the subsequent stage is obtained.

That is, every time the radio frequency signal to be distributed to the subsequent stage is switched, the gain of the distributing means corresponding to the radio frequency signal is the gain of the distributing means which has distributed the radio frequency prior to the latter stage. Is newly set without being reflected. Therefore, there is a large difference in level between the plurality of n radio frequency signals described above, or the distribution means 31.
Even if there is a large deviation in the gain or the characteristic of -1 to 31n, the responsiveness related to the switching of the radio frequency signal to be distributed to the subsequent stage can be accurately and uniformly maintained.

In the invention of the second subordinate concept of the invention described in claim 5, the level control means 34 controls the distribution means 31-1 to 31-n each time a new radio frequency signal is designated from the outside. The information necessary for inheriting the gain of the distributing means that previously distributed the preceding radio frequency signal specified from the outside to the latter stage is associated with the preceding radio frequency signal and preserved. By applying the information that has been preserved in association with the signal, a value is obtained in which the gain of the distribution means for distributing the new radio frequency signal to the subsequent stage should be maintained.

That is, no matter which order and interval the radio frequency signals to be distributed to the subsequent stage are switched, the distributing means corresponding to each individual radio frequency signal precedes the similar radio frequency signal to the latter stage. The gain of the distribution means that realized the distribution is promptly reapplied and subsequently updated accordingly. Therefore, even if there is a large difference in level between the plurality of n radio frequency signals, the radio frequencies to be distributed to the subsequent stage unless the gains and characteristics of the distribution means 31-1 to 31-n change significantly. High responsiveness related to signal switching is maintained.

In the invention related to the invention described in claim 5, the radio frequency signal designated from the outside is updated based on the procedure of channel control and / or call setup. That is, the level of any radio frequency signal specified based on the procedure of channel control or call setup is accurately and flexibly maintained at a predetermined value.

Therefore, it is possible to flexibly adapt to various multiple access methods, zone configurations, and channel arrangements.

[0033]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 2 is a diagram showing the first to third embodiments of the present invention. In this embodiment, the APC units 76-1 and 76-2 shown in FIG. 4 are not provided,
And the following elements are provided. Detectors 41-1 and 41-2 connected to the monitor terminals of the power amplifiers 73-1 and 73-2, respectively. First detectors individually connected to the outputs of these detectors 41-1 and 41-2. A switch 42 having a control input to which a binary band selection signal is input under the above-mentioned channel control in combination with the contact and the second contact. APC having an input connected to the common contact of the switch 42. Part 43 ・ A common contact connected to the output of this APC part 43,
A switch 44 having a control input to which the above-mentioned band selection signal is input, together with the first contact and the second contact respectively connected to the control inputs of the power amplifiers 73-1 and 73-2. 43 is composed of the following elements.

A deviation measuring unit 45 whose input is connected to the common contact of the switch 42. A correction value calculating unit 46 which is vertically connected between the output of the deviation measuring unit 45 and the common contact of the switch 44, and a correction value. Storage unit 47 and adder 48-Standard value output unit 49 whose output is connected to the augend input of the adder 48 FIG. 3 is an operation time chart of the first to third embodiments of the present invention.

The operation of the first embodiment of the present invention will be described below with reference to FIGS. Detectors 41-1 and 41
-2 rectifies the levels of these monitor signals by rectifying the first monitor signal and the second monitor signal output to the monitor terminals of the power amplifiers 73-1 and 73-2, respectively. The first detection signal (shown in FIG.
(1)) and the second detection signal (FIG. 3 (2)) are output.

The switch 42 detects one of the first detection signal and the second detection signal corresponding to the logical value of the band selection signal described above (power amplifiers 73-1 and 73).
-2 corresponds to one of the power amplifiers that gives an effective transmission wave signal to the antenna system 75, or the frequency band to which the occupied band of the effective transmission wave signal belongs. ) Is selected. The deviation measuring unit 45 obtains a difference between one of the detected signals and a prescribed threshold value to obtain a corresponding monitor signal (transmitted wave signal).
The deviation δ of the level is calculated (Fig. 3 (3)).

The correction value calculation unit 46 calculates any one of the following correction values C according to the deviation δ or the series of the deviations δ thus obtained in time series (FIG. 3 (4)). (a) Correction value C that is uniquely determined as a monotonically decreasing function or monotonically non-increasing function for the latest deviation value δ (b) Moving average method or exponential smoothing method for the sequence of deviation values δ obtained in time series. The larger the average value δa obtained based on the other weighted integrals, the smaller the value (a value that is not proportional to the average value δa and a monotonically decreasing function or a monotonous non-increasing function with respect to the average value δa. The correction value C (c) given as () may be used.) A prescribed algorithm (may be an adaptive algorithm) for the deviation value δ or the series of deviation values δ described above.
On the other hand, the correction value storage unit 47 has storage areas individually corresponding to the aforementioned 800 MHz band and 1.5 GHz band.

The correction value calculation unit 46 stores the correction value C thus obtained (such correction value) in one of these storage areas corresponding to the logical value of the band selection signal described above. When the value C has some correlation with the history of the sequence of the deviation values δ obtained in advance in time series,
The history or “reference information” to be referred to when the subsequent correction value C is calculated is included. ) Hold.

The standard value output section 49 is an instantaneous value (hereinafter referred to as "standard value") of the control signal to be given to the control input of the power amplifier 73 (73-2) when both of the following conditions are satisfied. For simplicity, it is assumed to be "0") is constantly given to the adder 48. The power amplifier 73-1 (73-) from the monitor terminal of the power amplifier 73-1 (73-2) via the detector 41-1 (41-2), the switch 42, the APC section 43 and the switch 44.
The gain of the feedback path to the control input in 2) is equal to the specified nominal value.

The transmission wave signals supplied to the power amplifiers 73-1 and 73-2 by the frequency conversion unit 72 have the same level. The adder 48 sums the latest correction value C held in the storage area corresponding to the logical value of the band selection signal described above among the storage areas of the correction value storage unit 47 and the above-mentioned “standard value”. Is generated as an instantaneous value.

The switch 44 includes power amplifiers 73-1 and 73.
The control signal described above is applied to the control input of one of the power amplifiers corresponding to the logical value of the band selection signal of -2.
That is, the band indicated by the logical value of the band selection signal is 8
Regardless of whether it is in the 00 MHz band or the 1.5 GHz band, the APC unit 43 uses the detectors 41-1 and 41-2.
The first detection signal or the second detection signal generated by the above is shared by performing the above-described processing, and the antenna system 75 uses the antenna system 75 to transmit a transmission wave of a substantially constant level that is maintained at a specified standard value with high accuracy. Signal is supplied.

Further, such processing is performed by a general-purpose processor or D in a band lower than the radio frequency band or the intermediate frequency band.
It is realized by utilizing the surplus processing amount of SP, or realized in a digital area by dedicated LSI or other hardware. Therefore, according to the present embodiment, the performance is not deteriorated, and the cost is low, the size is small, and the weight is low, as compared with the conventional example in which the individual APC units corresponding to the 800 MHz band and the 1.5 GHz band are provided. The requirements for power saving and power saving are met with high accuracy, and regardless of which band the occupied band of the transmission wave signal belongs to, the level of the transmission power is maintained at a value flexibly and accurately matched to the channel control.

In this embodiment, the procedure of the processing performed by the APC section 43 is common regardless of the band indicated by the logical value of the band selection signal. However, the procedure of the processing performed by the APC unit 43 is uniquely determined according to the logical value of the band selection signal described above, and as long as the APC unit 43 can reliably switch, a different individual procedure adapted to the logical value. May be

The second embodiment of the present invention will be described below. In the present embodiment, the band selection signal described above is input to the correction value calculation unit 46 as shown by the dotted line in FIG.
The operation of this embodiment will be described below with reference to FIGS. 2 and 3. Each time the logical value of the band selection signal is switched, the correction value calculation unit 46 initializes the contents of the storage area corresponding to the latest logical value of the band selection signal (FIG. 3).
(a)).

Further, the correction value calculator 46 performs the same processing as that of the above-described first embodiment except for the following points. In the process of obtaining the correction value C immediately after the logical value of the band selection signal is switched, the correction value C and the reference information held in the corresponding storage area in advance are not referred to. , And obtain these correction values C and reference information completely new.

The correction value C is obtained as one of the correction values listed in (b) and (c) above. That is,
When the frequency band of the transmission wave signal to be transmitted is switched, one of the power amplifiers 73-1 and 73-2 which subsequently outputs the transmission wave signal to be supplied to the antenna system 75 is selected. The instantaneous value of the control signal to be given is obtained completely without reflecting any information relating to the power control of the transmission wave signal supplied prior to the antenna system 75.

Therefore, when the logical value of the band selection signal is updated, as compared with the case where the contents of the above-mentioned storage area corresponding to the latest logical value are not initialized,
In any of the following cases, it is possible to prevent the level of the transmission wave signal radiated (transmitted) through the antenna system 75 from changing unnecessarily. When there is a large difference in the level between the transmission wave signal previously generated by the frequency conversion unit 72 and the transmission wave signal subsequently generated by the frequency conversion unit 72, or when there is a possibility that these levels will occur. Antenna system 7 in the occupied band of wave signal
5 If there is a difference in the effective gain and other characteristics of the antenna (antenna 74), or if such a difference can occur: • If there is a large difference in the gains of the power amplifiers 73-1 and 73-2 As described above, according to the present embodiment, the power amplifier 73-1 (7
Gain of the feedback path from the monitor output of 3-2) to the control input of the power amplifier 73-1 (73-2) via the detector 41-1 (41-2), the switch 42, the APC section 43 and the switch 44. , As long as the time constant and other characteristics are appropriate, the antenna system 7
The level of the transmission wave signal transmitted via 5 is set to a steady value without being unnecessarily delayed from the time when the logical value of the band selection signal is switched, and is stably maintained.

The operation of the third embodiment of the present invention will be described below with reference to FIGS. The feature of this embodiment lies in the procedure of the following processing performed by the correction value calculation unit 46.
The correction value calculation unit 46 maintains the contents of the storage area corresponding to the preceding logical value of the band selection signal without initializing each time the logical value of the band selection signal is switched (FIG. 3 (A)). ).

Further, the correction value calculation unit 46 performs the same processing as that of the above-described first embodiment except for the following points. In the process of obtaining the correction value C immediately after the time when the logical value of the band selection signal is switched, the correction value C and the reference information which were previously secured in the corresponding storage area are applied as initial values. Accordingly, the correction value C and the reference information are updated.

The correction value C is obtained as one of the correction values listed in (b) and (c) above. That is,
When the frequency band of the transmission wave signal to be transmitted is switched, the APC unit 43 causes the power amplifiers 73-1 and 73-2.
Among them, the instantaneous value of the control signal given to the power amplifier which subsequently outputs the transmission wave signal to be supplied to the antenna system 75 is the preceding value unless the power supply voltage, the characteristics of each part and other environmental conditions change significantly. Then, the instantaneous value of the control signal that was actually given to the power amplifier during the period when the transmission wave signal of the same frequency was being transmitted was quickly and continuously applied,
And will be updated.

Therefore, regardless of the order and interval in which the logical value of the band selection signal is updated,
In any of the following cases, the level of the transmission wave signal radiated (transmitted) through the antenna system 75 is maintained with high accuracy. When there is a large difference in the level between the transmission wave signal previously generated by the frequency conversion unit 72 and the transmission wave signal subsequently generated by the frequency conversion unit 72, or when there is a possibility that these levels will occur. Antenna system 7 in the occupied band of wave signal
5 If there is a difference in the effective gain and other characteristics of the antenna (antenna 74), or if such a difference can occur: • If there is a large difference in the gains of the power amplifiers 73-1 and 73-2 As described above, according to the present embodiment, the power amplifier 73-1 (7
Of the feedback path from the monitor output of 3-2) to the control input of the power amplifier 73-1 (73-2) via the detector 41-1 (41-2), the switch 42, the APC section 43 and the switch 44. Even if the gain, the time constant, and other characteristics are not necessarily appropriate, the level of the transmission wave signal to be transmitted via the antenna system 75 is the level at which the transmission wave signal in the desired band conforms to the channel control procedure. It is maintained accurately and stably.

In each of the embodiments described above, the modulator 7
No modulation method or signal point arrangement applied to No. 1 is disclosed. However, in the present invention, when a modulation method in which some signal points are not arranged on a single circle in the signal space is applied, for example, when the logical value of the band selection signal is not updated in the symbol period. Even when the contacts of the switches 42 and 44 should be switched, and
The PC unit 43 may perform the above-mentioned instantaneous value update of the control signal both in synchronization with the symbol period to avoid unnecessary deterioration of the transmission quality.

In each of the above embodiments, the FDMA
The present invention is applied to the transmission unit of a dual band terminal device that accesses a mobile communication system to which the TDMA system or the TDMA system is applied. However, the present invention is not limited to such a transmission unit, and if it is required that any one of a plurality of signals having different occupied bands be appropriately selected and that desired processing be performed at a prescribed level. The present invention can be applied not only to the receiver but also to various electronic devices.

Further, in each of the above-mentioned embodiments, 800
The present invention is applied to the transmission section of a dual band terminal device in which the levels of transmission wave signals in the megahertz band and the 1.5 GHz band are to be maintained at specified values. However, the present invention is not limited to such a dual band transmitter,
The present invention can also be applied to a multi-channel terminal device that realizes transmission and / or reception of three or more radio frequency signals having different occupied bands.

Further, in each of the above-described embodiments, any transmission wave signal to be supplied to the antenna system 75 via the power amplifiers 73-1 and 73-2 has a different occupied band, but has a common modulation. Suitable for the system and multiple access system. However, the present invention is not limited to such a plurality of transmission wave signals, and for example, a plurality of radio frequency signals or intermediate frequencies different in all or a part of adaptive multiple access method, modulation / demodulation method, zone configuration, channel arrangement. It is similarly applicable to a multi-mode terminal device which is required to maintain a proper signal level.

Furthermore, in each of the above-described embodiments, the logical value of the band selection signal is appropriately updated based on the channel control procedure. However, the logical value of such a band selection signal may be updated based on a call setup procedure, or may be updated under a predetermined man-machine interface or supervisory control.

Further, the present invention is not limited to the above-mentioned embodiments, and various embodiments can be made within the scope of the present invention, and some or all of the constituent elements are improved. May be done. Hereinafter, the configurations of the invention disclosed in the above-described embodiments will be organized hierarchically and multilaterally, and will be listed sequentially as additional items.

(Supplementary Note 1) A plurality n of distributing means 1 for individually distributing a plurality of n radio frequency signals having different occupied bands to the subsequent stage.
1-1 to 11-n and the plurality n of distributing means 11-1 to 11-n
A plurality of n level measuring means 1 for individually measuring the level at which the plurality of n radio frequency signals are distributed to the latter stage.
2-1 to 12-n and the plurality n of level measuring means 12-1 to
Selecting means 13 for selecting the level of the radio frequency signal designated from the outside among the levels measured by 12-n;
A radio frequency signal designated from the outside of the plurality of distribution units 11-1 to 11-n to a value that suppresses the deviation of the level selected by the selection unit 13 with respect to a specified threshold value. And a level control means 14 for maintaining the gain of the distributing means for distributing the electric power.

(Supplementary Note 2) In the power control apparatus according to Supplementary Note 1, the level control means 14 is based on a procedure of calculation newly activated each time a new radio frequency signal is designated from the outside. , The plurality of n distributing means 11-1 to
Among the 11-n, the power control apparatus is characterized in that a value for maintaining the gain of the distribution means for distributing the new radio frequency signal to the latter stage is obtained.

(Supplementary Note 3) In the power control device according to Supplementary Note 1, the level control means 14 precedes each time a new radio frequency signal is specified from the outside, which is specified in advance from the outside. Corresponding to the radio frequency signal, the information necessary for inheriting the gain of the distributing means which has distributed the preceding radio frequency signal among the plurality of n distributing means 11-1 to 11-n to the latter stage is preserved. , Applying a preserving information associated with the new radio frequency signal to obtain a value at which the gain of the distribution means for distributing the new radio frequency signal in the subsequent stage should be maintained. And a power control device.

(Supplementary Note 4) In the power control apparatus according to any one of Supplementary Notes 1 to 3, the level control means 14 may be arranged in units of symbols indicated by the radio frequency signal designated from the outside, in the unit of the symbol. Multiple n distribution means 11-1 to
Among the 11-n, the power control device is characterized in that the gain of the distributing means for distributing the radio frequency signal to the latter stage is updated.

(Supplementary Note 5) A plurality of n distributing means 22-1 for individually distributing a plurality of n radio frequency signals having different occupied bands to the antenna system 21 shared for transmission of these radio frequency signals.
To 22-n and a plurality of n level measuring means 23- individually measuring the level at which the plurality of n radio frequency signals are distributed to the antenna system 21 by the plurality of n distributing means 22-1 to 22-n. 1 to 23-n and the plurality of n level measuring means 23
Selecting means 24 for selecting the level of the radio frequency signal designated from the outside among the levels measured by -1 to 23-n
And a radio value designated from the outside of the plurality n of distribution units 22-1 to 22-n is set to a value that suppresses the deviation of the level selected by the selection unit 24 with respect to a specified threshold value. And a level control means 25 for maintaining the gain of the distributing means for distributing the frequency signal.

(Supplementary Note 6) In the multi-band transmission device according to Supplementary Note 5, the level control means 25 is based on a procedure of calculation newly activated each time a new radio frequency signal is designated from the outside. Of the plurality of distribution means 22-1 to 22-n, a value for maintaining the gain of the distribution means for distributing the new radio frequency signal to the antenna system 21 is obtained. Band transmitter.

(Supplementary Note 7) In the multi-band transmitting apparatus according to Supplementary Note 5, the level control means 25 is designated from the outside every time a new radio frequency signal is designated from the outside. Information necessary for inheriting the gain of the distributing means which has distributed the preceding radio frequency signal to the antenna system 21 among the plurality n of distributing means 22-1 to 22-n in association with the preceding radio frequency signal. A value by which the gain of the distribution means for distributing this new radio frequency signal to the antenna system 21 should be maintained by applying the previously stored information associated with the new radio frequency signal. A multi-band transmission device, characterized by:

(Supplementary Note 8) In the multi-band transmission device according to any one of Supplementary Notes 5 to 7, the radio frequency signal designated from the outside may be channel control and / or call setup. A multiband transmission device, which is updated based on a procedure.

(Supplementary Note 9) A plurality of n radio frequency signals, which are different in occupied band and different in all or a part of the compatible multiple access system, modulation system, channel arrangement and zone configuration, are individually distributed to the subsequent stage. Distributing means 31-1 to 31
-n and a plurality n of level measuring means 32-1 to 32 for individually measuring the levels at which the plurality n of radio frequency signals are distributed to the subsequent stage by the plurality of distribution means 31-1 to 31-n.
-n and the selection means 33 for selecting the level of the radio frequency signal designated from the outside among the levels measured by the plurality of n level measurement means 32-1 to 32-n, and the selection means 33. The distribution means 3 of the plurality n are set to a value at which the deviation of the level thus set with respect to the prescribed threshold is suppressed.
Among the 1-1 to 31-n, there is provided a level control means 34 for maintaining the gain of the distributing means for distributing the radio frequency signal designated from the outside, and a multi-mode wireless device.

(Supplementary Note 10) In the multi-mode radio apparatus according to Supplementary Note 9, the level control means 34 is based on a procedure of calculation newly activated each time a new radio frequency signal is designated from the outside. Of the plurality of n distribution units 31-1 to 31-n, a value for maintaining the gain of the distribution unit that distributes the new radio frequency signal to the subsequent stage is obtained. apparatus.

(Supplementary Note 11) In the multimode radio apparatus according to Supplementary Note 9, the level control means 34 is designated from the outside every time a new radio frequency signal is designated from the outside. Preserving the information necessary for inheriting the gain of the distributing means which distributes the preceding radio frequency signal among the plurality of n distributing means 31-1 to 31-n in association with the preceding radio frequency signal. Then, by applying the information that has been preserved in association with the new radio frequency signal, it is possible to obtain a value at which the gain of the distribution means for distributing the new radio frequency signal should be maintained in the subsequent stage. Characteristic multimode wireless device.

(Supplementary Note 12) In the multimode radio apparatus according to any one of Supplementary Notes 9 to 11, the radio frequency signal designated from the outside may be channel control and / or call setup. A multimode wireless device characterized by being updated based on a procedure.

[0070]

As described above, in the inventions according to claims 1, 4 and 5, the structure is simplified and various structures are obtained without significantly lowering the accuracy and the response as compared with the conventional example. Flexible adaptation to various bandwidths and methods is possible. Further, the invention described in claim 2, the invention of the first subordinate concept of the invention described in claim 4, and the invention of the first subordinate concept of the invention described in claim 5 can input a plurality of Even if there is a large difference in the level of the radio frequency signal or a large deviation in the gain or characteristics of the individual distribution means, the responsiveness related to the switching of the radio frequency signal can be maintained accurately and uniformly.

Furthermore, the invention described in claim 3, the invention of the second subordinate concept to the invention of claim 4 and the invention of the second subordinate concept of the invention of claim 5 are input. Even if there is a large difference between the levels of a plurality of radio frequency signals that can be generated, the responsiveness involved in switching the radio frequency signals to be distributed to the subsequent stage is not increased unless the gain and characteristics of the individual distribution means change significantly. Maintained high.

Further, in the invention of the subordinate concept of the invention described in claims 1 to 3, all the signal points which can be represented by the radio frequency signals to be distributed in the subsequent stage are on a single circle in the signal space. Even if it is not arranged in the above, the transmission quality of these radio frequency signals is maintained high irrespective of the order and intervals in which the above-mentioned switching is performed. Furthermore, an invention related to the invention according to claim 4,
With the invention related to the invention described in claim 5, it is possible to flexibly adapt to various multiple access schemes, zone configurations, and channel arrangements.

Therefore, in the equipment and system to which these inventions are applied, the overall reliability and service quality can be enhanced at a low cost, and the flexible realization of various added values can be achieved without degrading the performance. Become.

[Brief description of drawings]

FIG. 1 is a principle block diagram of the present invention.

FIG. 2 is a diagram showing first to third embodiments of the present invention.

FIG. 3 is an operation time chart of the first to third embodiments of the present invention.

FIG. 4 is a diagram showing a configuration example of a transmission unit of a conventional dual band terminal device.

[Explanation of symbols]

11,22,31 Distributing means 12, 23, 32 Level measuring means 13, 24, 33 selection means 14, 25, 34 Level control means 21,75 antenna system 41 wave detector 42,44 switch 43,76 APC section 45 Deviation measurement section 46 Correction value calculation unit 47 Correction value storage 48 adder 49 Standard value output section 71 Modulator 72 Frequency converter 73 Power amplifier 74 antenna

Claims (5)

[Claims] 1. A plurality of n distributing means for individually distributing a plurality of n radio frequency signals having different occupied bands to a subsequent stage, and the plurality of n distributing means distributes the plurality of n radio frequency signals to the latter stage. A plurality of n level measuring means for individually measuring the levels; a selecting means for selecting a level of a radio frequency signal designated from the outside among the levels measured by the plurality of n level measuring means; and the selecting means. A level for maintaining the gain of the distributing means for distributing the radio frequency signal designated from the outside, among the plurality of n distributing means, to a value at which the deviation of the selected level with respect to the specified threshold is suppressed. A power control device comprising: a control unit. 2. The power control device according to claim 1, wherein the level control unit is configured to perform a new operation every time a new radio frequency signal is designated from the outside, based on a calculation procedure newly started. A power control device for determining a value at which the gain of the distribution means for distributing the new radio frequency signal to the latter stage among the plurality of distribution means of n is to be maintained. 3. The power control apparatus according to claim 1, wherein the level control unit precedes each time a new radio frequency signal is specified, the preceding radio frequency specified by the external device. Corresponding to the signal, the information necessary for inheriting the gain of the distributing means, which distributes the preceding radio frequency signal among the plurality of distribution means to the latter stage, is preserved, and corresponds to the new radio frequency signal. A power control device, characterized in that by applying the attached and secured information, a value to which the gain of the distribution means for distributing this new radio frequency signal should be maintained in the subsequent stage is obtained. 4. A plurality of n distributing means for individually distributing a plurality of n radio frequency signals having different occupied bands to an antenna system which is shared for transmission of these radio frequency signals; a plurality of n level measuring means for individually measuring the levels at which n radio frequency signals are distributed to the antenna system, and a radio frequency signal designated from the outside among the levels measured by the plurality of n level measuring means Selection means for selecting the level, and a radio frequency specified from the outside of the plurality of n distribution means to a value that suppresses the deviation of the level selected by the selection means with respect to a prescribed threshold value. And a level control means for maintaining the gain of a distribution means for distributing a signal. 5. A plurality of n distribution means for individually distributing a plurality of n radio frequency signals having different occupied bands and different in all or part of compatible multiple access schemes, modulation schemes, channel arrangements and zone configurations to a subsequent stage. A plurality of n level measuring means for individually measuring the level at which the plurality of n radio frequency signals are distributed to the subsequent stage by the plurality of n distributing means; and a level measured by the plurality of n level measuring means. Selecting means for selecting the level of the radio frequency signal designated from the inside or outside, and a value for suppressing the deviation of the level selected by the selecting means with respect to a prescribed threshold value from among the plurality of n distributing means. And a level control means for maintaining a gain of a distributing means for distributing a radio frequency signal designated from the outside, the multi-mode wireless device.