DE112017004165T5 - RECEIVING DEVICE AND RECEIVING SYSTEM - Google Patents

Abstract

Receiving device, wherein the deterioration of the reception performance is prevented, while increasing the power consumption is prevented with an increased number of channels. Multiple input ports receive a radio frequency signal separate from an antenna. A plurality of high frequency circuits are provided corresponding to each of the plurality of input signals and deal with the high frequency signal from an antenna in mutually different frequency bands. A local oscillator signal generating circuit generates a local oscillator frequency corresponding to the frequency band of each of the plurality of high frequency circuits. A plurality of mixing circuits mix a high-frequency signal from each of the plurality of high-frequency circuits with a local oscillator frequency corresponding thereto and each generates a low-frequency signal. A merging circuit synthesizes the low frequency signals generated in the plural mixing circuits and outputs the merged signal.

Description

TECHNICAL AREA

The present technology relates to a receiving device for wireless communication and broadcasting. More particularly, the present invention relates to a satellite broadcasting receiving apparatus and system in which the broadcasting is performed in a plurality of channels in a relatively wide frequency band.

STATE OF THE ART

The extension of broadcast channels is critical to requirements such as increasing the amount of data and diversifying television broadcasting. In particular, in Japan, advancement of satellite broadcasting, such as extension of a signal format and increase in the number of channels, is proceeding to perform 4K broadcast and 8K broadcast. With the progress, an input frequency band of a receiving module is expanded and multiple channelization is achieved. Since a data transfer rate must be increased to perform 4K broadcast and 8K broadcast, modulation techniques such as 16 APSK and 32 APSK and conventional 8 PSK are also used. Therefore, a higher SNR is required in the receiving device than before. In other words, deterioration of the reception performance can not be tolerated.

In a typical receiving module, an input signal from an antenna is amplified by a high frequency (RF) circuit and input to a mixing circuit (MIX circuit). In the meantime, adjustment of a local oscillator frequency of a local oscillator signal generating circuit in the receiving module is changed according to a signal frequency of a receiving channel, and a local oscillator (LO) signal based on the setting is input to the mixing circuit. The mixing circuit multiplies the high frequency signal and the local oscillator signal to mix the signals into a low frequency signal of intermediate frequency (IF) or baseband frequency (BB). Then, channel selection is made for outputting the downmixing in a relatively low-frequency bandpass filter in an intermediate frequency band or a baseband frequency band, thereby attenuating unnecessary channel signals and realizing selection of a desired reception channel signal (see, for example, Patent Document 1).

QUOTE LIST

PATENT

• Patent document 1: Japanese Patent Application, Laid-Open No. 2013-236196

SUMMARY OF THE INVENTION

PROBLEMS TO BE SOLVED BY THE INVENTION

In the conventional technology described above, multi-channel signals, which are the unnecessary signals other than the desired receiving channel signal, are also input to the high-frequency circuit and the mixing circuit. The signal quality of the desired signal is therefore degraded due to non-linearity of the input and output of the group of these circuits. Specifically, the quality of the desired signal due to the occurrence of intermodulation, cross-modulation, harmonics and the like is degraded by the input of a large number of the unnecessary signals.

As the number of unnecessary channel signals increases with the increase in the number of channels, the demands on linearity for the high-frequency circuit and the mixing circuit have become more stringent to obtain a reception performance in the receiving apparatus which is similar to or higher than conventional ones. To improve the linearity of the high frequency circuit and the mixing circuit, countermeasures are typically taken by increasing a power supply voltage and a circuit current. Receiving the reception performance equivalent to the conventional cases, while maintaining a low power consumption against the increase in the number of channels, in other words, is very difficult.

Furthermore, the extension of the input frequency band simply results in an extension of an input frequency range. An operating frequency range in which signal amplification, multiplication, local oscillator signal generation and the like are performed, therefore, becomes larger in the high-frequency circuit, mixing circuit and LO generation circuit. In the high frequency circuit, the mixing circuit and the high frequency local oscillator signal generating circuit, dealing with the broadening of the operating frequency has typically been a problem of increasing the power consumption.

As described above, in the conventional technology, there is a major problem that suppression of deterioration of the Reception performance while maintaining the low power consumption is difficult. The present technology has been made in view of the above, and an object of the present technology is to prevent the deterioration of the reception performance while preventing an increase in power consumption from an increase in the number of channels in a reception apparatus.

SOLUTIONS

The present technology has been made to solve the above problems, and a first aspect of the present technology is a receiving apparatus and a receiving system comprising the receiving apparatus, the receiving apparatus having a plurality of input terminals adapted to separately receive a high frequency signal from an antenna, a plurality of high frequency circuits corresponding to the plurality of input terminals and adapted to handle the high frequency signal from the one antenna in mutually different frequency bands, a local oscillator signal generating circuit adapted to generate a local oscillator frequency corresponding to each of the frequency bands of the plurality of high frequency circuits, a plurality of mixing circuits adapted to mix the high frequency signals from the ones a plurality of high-frequency circuits and the local oscillator frequencies respectively corresponding to the high-frequency signals, for generating low-frequency signals, and an Zu sammenführungsschaltung, designed for merging and outputting the low-frequency signals that are generated in the plurality of mixing circuits includes. With the configuration, a function for providing the high-frequency circuit and the mixing circuit in each of the frequency bands is provided.

Further, in the first aspect, there may be included a control unit configured to select only a high-frequency circuit and a mixing circuit configured for the high-frequency band in response to a command input of a frequency band according to the command input from the plurality of high-frequency circuits and the plurality of mixing circuits. With the configuration, a function for suppressing the operation of the high-frequency circuit and the mixing circuit in an unnecessary frequency band is provided.

Further, in the first aspect, the plural input terminals may receive the high-frequency signals to which filter processes corresponding to the respective frequency bands are applied. With the configuration, a function for suppressing input of a high-frequency signal in an unnecessary frequency band to the receiving device is provided.

Further, in the first aspect, the plurality of high frequency circuits can deal with a high frequency signal of the television broadcast. Further, the plurality of high frequency circuits can deal with a high frequency signal of the satellite broadcasting. Further, another input terminal adapted to receive a high frequency signal from another antenna receiving terrestrial broadcasting and another high frequency circuit adapted to deal with the high frequency signal of the terrestrial broadcasting from the other antenna may be included in one frequency band from the other input terminal and one the plurality of mixing circuits may further mix the high-frequency signal from the other high-frequency circuit to generate a low-frequency signal.

EFFECTS OF THE INVENTION

According to the present technology, in a receiving apparatus, an excellent effect of preventing the deterioration of the receiving performance while preventing an increase in the power consumption can be exhibited against an increase in the number of channels. Note that the effects described herein are not necessarily limiting, and any effects described in the present disclosure may be shown.

list of figures

• 1 FIG. 12 is an illustration of a configuration example of a receiving system according to a first embodiment of the present technology. FIG.
• 2 Fig. 10 is an illustration of an example of filtering processing by a first filter 210 and a second filter 220 according to the first embodiment of the present technology.
• 3 FIG. 12 is an illustration of an example of operation control of a reception apparatus in an embodiment of the present technology. FIG.
• 4 FIG. 10 is an illustration of a circuit configuration example of a first mixer circuit. FIG 350 , a second mixing circuit 360 and merge circuit 370 in one embodiment of the present technology.
• 5 FIG. 12 is an illustration of a configuration example of a receiving system according to a second embodiment of the present technology. FIG.

MODE FOR CARRYING OUT THE INVENTION

1. 1. Erste Ausführungsform (ein Beispiel für Verarbeitung eines Hochfrequenzsignals von einer Antenne, die Satellitenausstrahlung empfängt, durch mehrere Hochfrequenzschaltungen)
2. 2. Zweite Ausführungsform (ein Beispiel für Verarbeitung eines Hochfrequenzsignals von einer anderen Antenne, die terrestrische Ausstrahlung empfängt, durch eine andere Hochfrequenzschaltung)
3. 3. Modifikation

The following describes ways of implementing the present technology (referred to herein as embodiments). The description is given in the following order:

1. First Embodiment (an example of processing a high-frequency signal from an antenna receiving satellite broadcast through a plurality of high-frequency circuits)
2. Second Embodiment (An example of processing a high frequency signal from another antenna receiving terrestrial broadcast by another high frequency circuit)
3. 3rd modification

<First Embodiment>

[Configuration of the receiving system]

1 FIG. 12 is an illustration of a configuration example of a receiving system according to a first embodiment of the present technology. FIG. The receiving system in the first embodiment is a device that receives television broadcasting and includes an antenna 100 , a first filter 210 and a second filter 220 and a receiving device 300 ,

The antenna 100 is an antenna for receiving satellite broadcasting. One through the antenna 100 Received signal received (high frequency signal) is the first filter 210 and the second filter 220 supplied

The first filter 210 and the second filter 220 are filters that are related to those of the antenna 100 supplied high-frequency signals pass necessary signals and attenuate unnecessary signals. In this example, the first filter leaves 210 transmits a signal in a relatively high frequency band and attenuates a signal in a relatively low frequency band from the high frequency signals. In the meantime, leave the second filter 220 transmits a signal in a relatively low frequency band and attenuates a signal in a relatively high frequency band from the high-frequency signals. With the filters only necessary signals of the receiving device 300 be supplied. In other words, if a frequency band is widened due to an increase in the number of channels, the received signal can be input to the receiving device 300 are input by dividing the frequency band of the received signal. The for the receiving device 300 required linearity can thus be reduced.

The first filter 210 and the second filter 220 can be realized, for example, by a diplexer or the like. 2 Fig. 10 is an illustration of an example of filtering processing by the first filter 210 and the second filter 220 according to the first embodiment of the present technology. It can be seen that for the output of the antenna 100 the first filter 210 passes the signal in a high frequency band and attenuates the signal in a low frequency band. It can also be seen that the second filter 220 passes the signal in a low frequency band and attenuates the signal in a high frequency band. Note that the first filter 210 and the second filter 220 an example of several filters described in the claims.

The receiving device 300 performs processing of receiving high frequency signals from the antenna 100 over the first filter 210 and the second filter 220 and mixing down the high frequency signals into a low frequency band. The receiving device 300 includes a first high frequency circuit 310 , a second high frequency circuit 320 , a local oscillator signal generating circuit 340 , a first mixing circuit 350 , a second mixing circuit 360 , a merge circuit 370 , a control unit 380 and a low frequency circuit 390 ,

Furthermore, the receiving device comprises 300 input terminals 301 . 302 and 308 and an output terminal 309 , An output of the first filter 210 becomes the input terminal 301 fed. An output of the second filter 220 becomes the input terminal 302 fed. A signal to control the receiving device 300 becomes the input terminal 308 fed. For example, an instruction operation of a reception channel becomes the input terminal 308 entered. The output terminal 309 gives as the output of the receiving device 300 a low frequency signal of the reception channel instructed by an instruction operation input. Note that the input terminals 301 and 302 an example of several input terminals described in the claims.

The first high frequency circuit 310 is a circuit that uses a high frequency signal in one of the first filters 210 bypassed relative high frequency band. The first high frequency circuit 310 includes a low-noise amplifier ( LNA ) 311 , a variable gain amplifier (VGA) 312 and a bandpass filter ( BPF ) 313 , The low noise amplifier 311 is an amplifier that is the input terminal 301 amplified received signal amplified. The variable gain amplifier 312 is an amplifier for controlling a gain. The bandpass filter 313 is a Filter for limiting the frequency band. The frequency band passing through the bandpass filter 313 is a relative high frequency band to which the first high frequency circuit 310 bypasses.

The second high frequency circuit 320 is a circuit that bypasses a high frequency signal in a relatively low frequency band from that of the second filter 220 is delivered. The second high frequency circuit 320 includes a low noise amplifier 321 , a variable gain amplifier 322 and a bandpass filter 323 , similar to the first high frequency circuit 310 , The low noise amplifier 321 is an amplifier that is the input terminal 302 amplified received signal amplified. The variable gain amplifier 322 is an amplifier for controlling a gain. The bandpass filter 323 is a filter for limiting the frequency band. That through the bandpass filter 323 passing frequency band is a relatively low frequency band, with which the second high-frequency circuit 320 bypasses, and is from the frequency band of the bandpass filter 313 different. Note that the first high-frequency circuit 310 and the second high frequency circuit 320 an example of several high-frequency circuits described in the claims.

The local oscillator signal generating circuit 340 is a circuit that generates a local oscillator signal. The local oscillator signal generating circuit 340 comprises a phase locked loop ( PLL ) 341 and buffers 345 and 346 , The phase locked loop 341 is a circuit that outputs a synchronized with a certain frequency AC signal. The buffers 345 and 346 are circuits that are an output of the phase locked loop 341 output as local oscillator signal. This is done by the local oscillator signal generating circuit 340 generated local oscillator signal is the first mixing circuit 350 and the second mixing circuit 360 fed.

The first mixing circuit 350 is a circuit that receives the high-frequency signal in a relatively high frequency band from the first high-frequency circuit 310 is output from the local oscillator signal generating circuit 340 supplied local oscillator signal mixes to produce a low frequency signal.

The second mixing circuit 360 is a circuit that receives the high frequency signal in a relatively low frequency band from the second high frequency circuit 320 is output by the local oscillator signal generating circuit 340 supplied local oscillator signal mixes to produce a low frequency signal. Note that the first mixing circuit 350 and the second mixing circuit 360 an example of several mixing circuits described in the claims.

The merge circuit 370 is a circuit that passes through the first mixer circuit 350 and the second mixing circuit 360 generated low-frequency signals and the low-frequency signal from the first mixing circuit 350 or from the second mixing circuit 360 outputs.

The control unit 380 controls each part of the receiving device 300 , The control unit 380 For example, it operates only circuits designed for the frequency band according to a command input of the receiving channel. In other words, the control unit performs 380 if the receive channel is for a relatively high frequency band, control through to the first RF circuit 310 and the first mixing circuit 350 operate while the second high-frequency circuit 320 and the second mixing circuit 360 not be operated. If the receiving channel is for relatively low frequency band, the control unit performs 380 further control by the second high frequency circuit 320 and the second mixing circuit 360 to operate while the first high-frequency circuit 310 and the first mixing circuit 350 not be operated.

The low frequency circuit 390 is a circuit with that of the merge circuit 370 bypassed low-frequency signal and includes a low-pass filter ( LPF ) 391 and a variable gain amplifier 392 , The low pass filter 391 is a filter for limiting the frequency band. That through the low-pass filter 391 passing frequency band is a frequency band of a low-frequency signal and is of the frequency bands of the band-pass filter 313 and 323 different. Note that instead of the low pass filter 391 a bandpass filter may be used as long as the bandpass filter is for the low frequency circuit 390 suitable frequency band corresponds. The variable gain amplifier 392 is an amplifier for controlling a gain.

[Operation Control of Receiving Apparatus]

3 FIG. 12 is an illustration of an example of the operation control of a reception apparatus in an embodiment of the present technology. FIG. As described above, the control unit performs 380 Control by to operate only circuits designed for the frequency band according to the instruction input of the receiving channel. Therefore, if the reception channel is for a relatively high frequency band, the control unit sets 380 enable signals ENA1 to ENA5 and does not set (reset) enable signals ENB1 to ENB5 , Further, if the receiving channel is for a relatively low frequency band, the control unit continues 380 enable signals ENB1 to ENB5 and does not set (reset) enable signals ENA1 to ENA5 ,

The release signals ENA1 to ENA5 and ENB1 to ENB5 be to the first high frequency circuit 310 , the second high-frequency circuit 320 , the first mixing circuit 350 , the second mixing circuit 360 and the local oscillator signal generating circuit 340 distributed. In other words, the enable signal becomes ENA1 the buffer 345 fed. The release signal ENA2 becomes the first mixing circuit 350 fed. The release signal ENA3 becomes the bandpass filter 313 fed. The release signal ENA4 is the variable gain amplifier 312 fed. The release signal ENA5 becomes the low noise amplifier 311 fed. The release signal ENB1 becomes the buffer 346 fed. The release signal ENB2 becomes the second mixing circuit 360 fed. The release signal ENB3 becomes the bandpass filter 323 fed. The release signal ENB4 is the variable gain amplifier 322 fed. The release signal ENB5 becomes the low noise amplifier 321 fed.

With the configuration, if the reception channel is for a relatively high frequency band, the first high frequency circuit is 310 and the first mixing circuit 350 , which are designed for the frequency band, controlled for operation and the second high-frequency circuit 320 and the second mixing circuit 360 are not controlled for operation. In the meantime, if the receiving channel is for a relatively low frequency band, the second high frequency circuit will become 320 and the second mixing circuit 360 , which are designed for the frequency band, controlled for operation, and the first high-frequency circuit 310 and the first mixing circuit 350 are not controlled for operation. Therefore, unnecessary circuit operation according to the frequency band of the receiving channel can be suppressed and power saving can be achieved.

Note that in this example, resetting all enable signals ENB1 to ENB5 if the receiving channel is for a relatively high frequency band. However, a certain power saving effect can be obtained by resetting at least one of the enable signals. Similarly, at least one of the enable signals ENA1 to ENA5 reset if the receive channel is for a relatively low frequency band.

4 FIG. 12 is an illustration of a circuit configuration example for the first mixing circuit. FIG 350 , the second mixing circuit 360 and the merge circuit 370 in one embodiment of the present technology. In this example, it is assumed that each part of the circuits operates on a differential signal.

The first mixing circuit 350 comprises two transconductance amplifiers 351 and 352 and four switching transistors 353 to 356 , The transconductance amplifier 351 and 352 output a signal having a current value equal to a voltage of that of the first high frequency circuit 310 output high-frequency signal corresponds. The release signal ENA2 becomes the transconductance amplifier 351 and 352 fed. The switching transistors 353 to 356 are circuits that are those of the transconductance amplifiers 351 and 352 output signals in accordance with the local oscillator signal from the buffer 345 turn.

The second mixing circuit 360 comprises two transconductance amplifiers 361 and 362 and four switching transistors 363 to 366 , similar to the first mixing circuit 350 , The transconductance amplifier 361 and 362 output a signal having a current value equal to a voltage of that of the second high-frequency circuit 320 output high-frequency signal corresponds. The release signal ENB2 becomes the transconductance amplifier 361 and 362 fed. The switching transistors 363 to 366 are circuits that are those of the transconductance amplifiers 361 and 362 output signals in accordance with the local oscillator signal from the buffer 346 turn.

The merge circuit 370 includes an operational amplifier 371 and feedback resistors 372 and 373 , These circuits operate in a low frequency band of an intermediate frequency or a baseband frequency and output signals having voltage values, the currents of signals from the first mixing circuit 350 and the second mixing circuit 360 correspond.

In this circuit configuration example, if the reception channel is for a relatively high frequency band, the buffer operates 345 and the transconductance amplifiers 351 and 352 , and the buffer 346 and the transconductance amplifiers 361 and 362 do not work. In contrast, if the receive channel is for a relatively low frequency band, the buffers will work 346 and the transconductance amplifiers 361 and 362 , and the buffer 345 and the transconductance amplifiers 351 and 352 do not work.

As described above, according to the first embodiment of the present technology, the high-frequency circuit and the mixing circuit are provided for each frequency band of the satellite broadcast receiving channel, whereby the linearity requirements for the circuits can be alleviated. Further, only the necessary circuits are operated according to the frequency band of the satellite broadcasting reception channel, whereby the power saving can be achieved.

<Second Embodiment>

In the first embodiment described above, reception of the satellite broadcast was assumed. However, in a second embodiment to be described below, terrestrial broadcasting is also received in a receiving device 300 accepted.

[Configuration of the receiving system]

5 FIG. 12 is an illustration of a configuration example of a receiving system according to the second embodiment of the present technology. FIG. The receiving system in the second embodiment includes a terrestrial antenna 103 in addition to the configuration of the first embodiment. Furthermore, the receiving device comprises 300 also an input connection 303 and receives a reception signal (high frequency signal) of the terrestrial broadcast from the terrestrial antenna 103 , Note that the input terminal 303 an example of another input terminal described in the claims.

Furthermore, the receiving device comprises 300 also a third high-frequency circuit 330 , An output of the third high-frequency circuit 330 becomes a second mixing circuit 360 fed. In a front stage of the second mixing circuit 360 is a switching network 369 provided, and an output of a second high-frequency circuit 320 or the third high-frequency circuit 330 becomes the second mixing circuit 360 fed. The second mixing circuit 360 mixes a high frequency signal in a relatively high frequency band, that of a first high frequency circuit 310 is output, or the high-frequency signal of the terrestrial broadcast, that of the third high-frequency circuit 330 is output with that of the local oscillator signal generating circuit 340 supplied local oscillator signal to produce a low frequency signal. The rest of the configuration is similar to that of the first embodiment described above. Note that the third high-frequency circuit 330 an example of another high frequency circuit described in the claims.

Further, presence or absence of operation for the third high-frequency circuit 330 in the second embodiment, using enable signals by a control unit 380 be controlled, similar to the first embodiment. With the control, only the necessary circuits according to frequency bands of receiving channels of the satellite broadcast and terrestrial broadcasting can be operated, and the power saving can be achieved.

According to the second embodiment, for each frequency band of the satellite broadcast receiving channel, the high frequency circuit is provided and the high frequency circuit for the terrestrial broadcast frequency band is provided, whereby the terrestrial broadcast can be further received. The high-frequency circuits can be designed for the respective frequency bands. Therefore, reception characteristics can be improved.

<Modification>

In the above embodiments, the phase locked loop is 341 regardless of the frequency band provided as a common circuit, the phase locked loop 341 but can be provided for each frequency band. With the configuration, a circuit configuration optimized for each frequency band can be used.

As described above, according to the embodiments of the present technology, the high-frequency circuit and the mixing circuit are provided for each frequency band of the receiving channel, whereby the requirements of the linearity for the circuits can be reduced. Further, according to the frequency band of the receiving channel, only the necessary circuits are operated, whereby power saving can be achieved. Furthermore, a selective filter of a frequency signal can be applied outside the receiving device, and the requirements of linearity for the high-frequency circuit can be reduced. With the configuration, characteristics of the noise figure (NF) and the like can be improved, and the reception performance can be improved while suppressing an increase in power consumption.

Further, the operating frequency range of each circuit in the receiving device can be narrowed, and reduction of power consumption and improvement of the characteristics becomes possible. Further, the circuit group in the frequency band different from the reception channel is not controlled to operate, whereby the power saving can be achieved. Further, thus unnecessary signals can be disabled and interference between input signals of the respective frequency bands can be suppressed.

In other words, according to the embodiments of the present technology, a reception apparatus capable of performing reception without deterioration of reception performance while increasing the power consumption over the increase in the number of channels used for 4K reception can be provided. Radiation or 8K broadcast is necessary, is prevented.

Note that the above-described embodiments describe an example of the realization of the present technology, and the items in the embodiments and the items used to specify the invention in the claims each have correspondence. Similarly, the items used to specify the invention in the claims and those in the embodiment of the present technology that receive the same names each have correspondence. However, the present technology is not limited to the embodiments, and can be realized by applying various modifications to the embodiments without departing from the essence of the present technology.

Note that the effects described in the present specification are merely examples and are not limited and other effects can be exhibited.

1. (1) Empfangsvorrichtung, umfassend:
   • mehrere Eingangsanschlüsse, ausgelegt zum getrennten Empfangen eines Hochfrequenzsignals von einer Antenne;
   • mehrere entsprechend den mehreren Eingangsanschlüssen bereitgestellte Hochfrequenzschaltungen, ausgelegt zum Umgehen mit dem Hochfrequenzsignal von der einen Antenne in voneinander verschiedenen Frequenzbändern;
   • eine Lokaloszillatorsignal-Erzeugungsschaltung, ausgelegt zum Erzeugen einer Lokaloszillatorfrequenz entsprechend jedem der Frequenzbänder der mehreren Hochfrequenzschaltungen;
   • mehrere Mischschaltungen, ausgelegt zum Mischen der Hochfrequenzsignale von den mehreren Hochfrequenzschaltungen und der den Hochfrequenzsignalen entsprechenden Lokaloszillatorfrequenzen, um jeweils Niederfrequenzsignale zu erzeugen; und
   • eine Zusammenführungsschaltung, ausgelegt zum Zusammenführen und Ausgeben der durch die mehreren Mischschaltungen erzeugten Niederfrequenzsignale.
2. (2) Empfangsvorrichtung gemäß (1), ferner umfassend: eine Steuereinheit, die dafür ausgelegt ist, als Reaktion auf eine Anweisungseingabe eines Frequenzbands nur eine Hochfrequenzschaltung und eine Mischschaltung, die für das Frequenzband gemäß der Anweisungseingabe ausgelegt ist, der mehreren Hochfrequenzschaltungen und der mehreren Mischschaltungen zu betreiben.
3. (3) Empfangsvorrichtung gemäß (1) oder (2), wobei die mehreren Eingangsanschlüsse die Hochfrequenzsignale empfangen, auf die Filterprozesse entsprechend den jeweiligen Frequenzbändern angewandt werden.
4. (4) Empfangsvorrichtung gemäß einem aus (1) bis (3), wobei die mehreren Hochfrequenzschaltungen mit einem Hochfrequenzsignal der Fernsehausstrahlung umgehen.
5. (5) Empfangsvorrichtung gemäß einem aus (1) bis (4), wobei die mehreren Hochfrequenzschaltungen mit einem Hochfrequenzsignal der Satellitenausstrahlung umgehen.
6. (6) Empfangsvorrichtung gemäß (5), ferner umfassend:
   • einen anderen Eingangsanschluss, ausgelegt zum Empfangen eines Hochfrequenzsignal von einer anderen Antenne, die terrestrische Ausstrahlung empfängt; und
   • eine andere Hochfrequenzschaltung, ausgelegt zum Umgehen mit dem Hochfrequenzsignal der terrestrischen Ausstrahlung von der anderen Antenne in einem Frequenzband von dem anderen Eingangsanschluss, wobei
   • eine der mehreren Mischschaltungen ferner das Hochfrequenzsignal von der anderen Hochfrequenzschaltung mischt, um ein Niederfrequenzsignal zu erzeugen.
7. (7) Empfangssystem, umfassend:
   • eine Antenne;
   • mehrere Hochfrequenzschaltungen, ausgelegt zum Umgehen mit einem Hochfrequenzsignal von der einen Antenne in voneinander verschiedenen Frequenzbändern;
   • eine Lokaloszillatorsignal-Erzeugungsschaltung, ausgelegt zum Erzeugen einer Lokaloszillatorfrequenz entsprechend jedem der Frequenzbänder der mehreren Hochfrequenzschaltungen;
   • mehrere Mischschaltungen, ausgelegt zum Mischen der Hochfrequenzsignale von den mehreren Hochfrequenzschaltungen und der den Hochfrequenzsignalen entsprechenden Lokaloszillatorfrequenzen, um jeweils Niederfrequenzsignale zu erzeugen; und
   • eine Zusammenführungsschaltung, ausgelegt zum Zusammenführen und Ausgeben der durch die mehreren Mischschaltungen erzeugten Niederfrequenzsignale.
8. (8) Empfangssystem gemäß (7), ferner umfassend:
   • eine Steuereinheit, die dafür ausgelegt ist, als Reaktion auf eine Anweisungseingabe eines Frequenzbands nur eine Hochfrequenzschaltung und eine Mischschaltung, die für das Frequenzband gemäß der Anweisungseingabe ausgelegt ist, der mehreren Hochfrequenzschaltungen und der mehreren Mischschaltungen zu betreiben.
9. (9) Empfangssystem gemäß (7) oder (8), ferner umfassend:
   • mehrere Filter, ausgelegt zum Anwenden von Filterprozessen gemäß den jeweiligen Frequenzbändern auf das Hochfrequenzsignal von der einen Antenne, wobei
   • jede der mehreren Hochfrequenzschaltungen mit Ausgaben der mehreren Filter als Hochfrequenzsignale von der einen Antenne umgeht.
10. (10) Empfangssystem gemäß einem von (7) bis (9), wobei die mehreren Hochfrequenzschaltungen mit einem Hochfrequenzsignal der Fernsehausstrahlung umgehen.
11. (11) Empfangssystem gemäß einem von (7) bis (10), wobei die eine Antenne eine Antenne zum Empfangen von Satellitenausstrahlung ist und die mehreren Hochfrequenzschaltungen mit Hochfrequenzsignalen in verschiedenen Frequenzbändern der Satellitenausstrahlung umgehen.
12. (12) Empfangssystem gemäß (11), ferner umfassend:
    • eine andere Antenne zum Empfangen von terrestrischer Ausstrahlung; und
    • eine andere Hochfrequenzschaltung, ausgelegt zum Umgehen mit einem Hochfrequenzsignal der terrestrischen Ausstrahlung von der anderen Antenne, wobei
    • eine der mehreren Mischschaltungen ferner das Hochfrequenzsignal von der anderen Hochfrequenzschaltung mischt, um ein Niederfrequenzsignal zu erzeugen.

Note that the present technology may also have the following configurations.

1. (1) Receiving device, comprising:
   • a plurality of input terminals configured to separately receive a radio frequency signal from an antenna;
   • a plurality of high frequency circuits provided corresponding to the plurality of input terminals configured to bypass the high frequency signal from the one antenna in frequency bands different from each other;
   • a local oscillator signal generating circuit configured to generate a local oscillator frequency corresponding to each of the frequency bands of the plurality of high frequency circuits;
   • a plurality of mixing circuits configured to mix the high frequency signals from the plurality of high frequency circuits and the local oscillator frequencies corresponding to the high frequency signals to produce low frequency signals, respectively; and
   • a merging circuit configured to combine and output the low frequency signals generated by the plurality of mixing circuits.
2. (2) The receiving apparatus according to (1), further comprising: a control unit configured to, in response to a command input of a frequency band, only a high frequency circuit and a mixing circuit configured for the frequency band according to the command input, the plurality of high frequency circuits, and the plurality of high frequency circuits To operate mixing circuits.
3. (3) The receiving apparatus according to (1) or (2), wherein the plurality of input terminals receive the high-frequency signals to which filtering processes corresponding to the respective frequency bands are applied.
4. (4) The receiving apparatus according to any one of (1) to (3), wherein the plurality of high frequency circuits deal with a high frequency signal of the television broadcast.
5. (5) The receiving apparatus according to any one of (1) to (4), wherein the plurality of high frequency circuits deal with a high frequency signal of the satellite broadcasting.
6. (6) The receiving device according to (5), further comprising:
   • another input terminal configured to receive a high frequency signal from another antenna receiving terrestrial broadcast; and
   • another high-frequency circuit adapted to deal with the high-frequency signal of the terrestrial broadcasting from the other antenna in a frequency band from the other input terminal, wherein
   • one of the plurality of mixing circuits further mixes the high frequency signal from the other high frequency circuit to generate a low frequency signal.
7. (7) receiving system comprising:
   • an antenna;
   • a plurality of high frequency circuits configured to bypass a high frequency signal from the one antenna in mutually different frequency bands;
   • a local oscillator signal generating circuit configured to generate a local oscillator frequency corresponding to each of the frequency bands of the plurality of high frequency circuits;
   • a plurality of mixing circuits configured to mix the high frequency signals from the plurality of high frequency circuits and the local oscillator frequencies corresponding to the high frequency signals to produce low frequency signals, respectively; and
   • a merging circuit configured to combine and output the low frequency signals generated by the plurality of mixing circuits.
8. (8) The receiving system according to (7), further comprising:
   • a control unit configured to operate only a high-frequency circuit and a mixing circuit designed for the frequency band according to the instruction input, the plurality of high-frequency circuits, and the plurality of mixing circuits in response to a command input of a frequency band.
9. (9) The receiving system according to (7) or (8), further comprising:
   • a plurality of filters configured to apply filtering processes according to the respective frequency bands to the high frequency signal from the one antenna, wherein
   • each of the plurality of high-frequency circuits bypasses outputs of the plurality of filters as high-frequency signals from the one antenna.
10. (10) The receiving system according to any one of (7) to (9), wherein the plurality of high frequency circuits deal with a high frequency signal of the TV broadcast.
11. (11) The receiving system according to any one of (7) to (10), wherein the one antenna is an antenna for receiving satellite broadcasting and the plurality of high frequency circuits bypass high frequency signals in different frequency bands of the satellite broadcasting.
12. (12) The receiving system according to (11), further comprising:
    • another antenna for receiving terrestrial broadcasting; and
    • another high frequency circuit adapted to deal with a high frequency signal of the terrestrial broadcasting from the other antenna, wherein
    • one of the plurality of mixing circuits further mixes the high frequency signal from the other high frequency circuit to generate a low frequency signal.

LIST OF REFERENCE NUMBERS

100

antenna

103

Terrestrial antenna

210

First filter

220

Second filter

300

receiving device

301, 302, 303, 308

input port

309

output port

310

First high-frequency circuit

311, 321, 331

Low Noise Amplifier (LNA)

312, 322, 332

Variable gain amplifier (RF-VGA)

313, 323, 333

Bandpass filter (RF-BPF)

320

Second high frequency circuit

330

Third high frequency circuit

340

Local oscillator signal generating circuit

341

Phase locked loop (PLL)

345, 346

buffer

350

First mixing circuit

351, 352, 361, 362

transconductance amplifier

353-356, 363-366

switching transistor

360

Second mixing circuit

370

Composition circuit

371

operational amplifiers

372, 373

Feedback resistor

380

control unit

390

Low frequency circuit

391

Low pass filter (BB-LPF)

392

Variable gain amplifier (BB-VGA)

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• JP 2013236196 [0003]

Claims (12)

Receiving device, comprising: a plurality of input terminals configured to separately receive a radio frequency signal from an antenna; a plurality of high frequency circuits provided corresponding to the plurality of input terminals configured to bypass the high frequency signal from the one antenna in frequency bands different from each other; a local oscillator signal generating circuit configured to generate a local oscillator frequency corresponding to each of the frequency bands of the plurality of high frequency circuits; a plurality of mixing circuits configured to mix the high frequency signals from the plurality of high frequency circuits and the local oscillator frequencies corresponding to the high frequency signals to produce low frequency signals, respectively; and a merging circuit configured to combine and output the low frequency signals generated by the plurality of mixing circuits. Receiving device according to Claim 1 , further comprising: a control unit configured to operate only one high-frequency circuit and a mixing circuit configured for the frequency band according to the instruction input, the plurality of high-frequency circuits, and the plurality of mixing circuits in response to a command input of a frequency band. Receiving device according to Claim 1 wherein the plurality of input terminals receive the high frequency signals to which filter processes corresponding to the respective frequency bands are applied. Receiving device according to Claim 1 wherein the plurality of high frequency circuits handle a high frequency signal of the television broadcast. Receiving device according to Claim 1 wherein the plurality of high frequency circuits handle a high frequency signal of the satellite broadcast. Receiving device according to Claim 5 further comprising: another input terminal configured to receive a high frequency signal from another antenna receiving terrestrial broadcast; and another high frequency circuit configured to deal with the high frequency signal of the terrestrial broadcasting from the other antenna in a frequency band from the other input terminal, wherein one of the plurality of mixing circuits further mixes the high frequency signal from the other high frequency circuit to generate a low frequency signal. Receiving system comprising: an antenna; a plurality of high frequency circuits configured to bypass a high frequency signal from the one antenna in mutually different frequency bands; a local oscillator signal generating circuit configured to generate a local oscillator frequency corresponding to each of the frequency bands of the plurality of high frequency circuits; a plurality of mixing circuits configured to mix the high frequency signals from the plurality of high frequency circuits and the local oscillator frequencies corresponding to the high frequency signals to produce low frequency signals, respectively; and a merging circuit configured to combine and output the low frequency signals generated by the plurality of mixing circuits. Receiving system according to Claim 7 , further comprising: a control unit configured to operate only one high-frequency circuit and a mixing circuit configured for the frequency band according to the instruction input, the plurality of high-frequency circuits, and the plurality of mixing circuits in response to a command input of a frequency band. Receiving system according to Claim 7 , further comprising: a plurality of filters configured to apply filtering processes according to the respective frequency bands to the high frequency signal from the one antenna, each of the plurality of high frequency circuits bypassing outputs of the plurality of filters as high frequency signals from the one antenna. Receiving system according to Claim 7 wherein the plurality of high frequency circuits handle a high frequency signal of the television broadcast. Receiving system according to Claim 7 wherein the one antenna is an antenna for receiving satellite broadcasting and the plurality of radio frequency circuits bypass high frequency signals in different frequency bands of the satellite broadcasting. Receiving system according to Claim 11 further comprising: another antenna for receiving terrestrial broadcasting; and another high frequency circuit configured to deal with a high frequency signal of the terrestrial broadcast from the other antenna, wherein one of the plurality of mixing circuits further mixes the high frequency signal from the other high frequency circuit to generate a low frequency signal.

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