JP2010258536A - Reception device and integrated circuit component - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reliably suppress internal interference without enlarging a reception device. <P>SOLUTION: In an integrated circuit component 100, a semiconductor substrate 104 is connected to a GND terminal 101 by a bonding wire 105, to a terminal 102 for integrated circuit function for achieving a function of the integrated circuit component 100, and to a noise output terminal 103 for outputting a noise component generated in the integrated circuit component 100. A noise detection unit 106 which detects the noise component generated in the integrated circuit component 100 is provided on the semiconductor substrate 104. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a receiving device and an integrated circuit component used for the receiving device, for example, a receiving device used for broadcasting and wireless communication and an integrated circuit component used therein.

  In a receiving device for receiving radio signals used for communication and broadcasting, a signal generated by a circuit such as a CPU or a memory, an arithmetic circuit for processing a received signal, or a reference clock generator for operating them, or the signal There is a problem of internal interference in which the higher harmonic component becomes an interference component in the radio frequency band of the received signal and degrades the quality of the received signal.

  In recent years, receivers have become more multifunctional, and the number of circuits built in them has been increasing. In addition, as the signals handled in the receiving apparatus are digitized, the processing speed and the amount of information to be processed are also increasing. In addition, receiving devices are required to be further downsized, and antennas for receiving signals are becoming smaller and built-in. For this reason, the interference component of internal interference is increasing. In addition, the problem of internal interference is further aggravated by an increase in coupling between a receiving antenna and a circuit that generates an interference component due to downsizing of the receiving device.

  As countermeasures against this problem, optimization of circuit arrangement, addition of parts (for example, a bypass capacitor, a choke coil, a filter, and a shield) for suppressing unnecessary radiation of interference components may be performed. Such optimization of circuit arrangement and addition of components lead to an increase in the design man-hour of the receiving device, an increase in cost, and an increase in the size of the receiving device.

  Therefore, various techniques for suppressing internal interference have been proposed as follows.

  For example, the noise generated in the device is detected, and the detected noise is controlled to have the opposite phase and the same amplitude as the noise superimposed on the received signal as an interference component, and the noise after control is added to the received signal. There is a technique to suppress (see, for example, Patent Document 1).

  Further, there is a technique for suppressing noise interference on a wire harness or a printed wiring board by arranging a protective resistor at the output of a circuit component (see, for example, Patent Document 2).

US Patent Application Publication No. 2006/0178157 Japanese Patent Laid-Open No. 11-241646

  However, with the technique described in Patent Document 1, when the noise source is an integrated circuit component, a sufficient level of noise detection cannot be ensured, and noise superimposed on the received signal cannot be sufficiently suppressed. In the technique described in Patent Document 1, the shape of a sensor for detecting noise is increased, and the size of the receiving device is increased.

  In the technique described in Patent Document 2, since noise generated by a circuit component is radiated as electromagnetic waves to the space, noise that interferes with an antenna adjacent to the circuit component cannot be suppressed.

  The present invention has been made in view of this point, and an object of the present invention is to provide a receiving device and an integrated circuit component that can reliably suppress internal interference without increasing the size of the receiving device.

  The integrated circuit component of the present invention employs a configuration having detection means for detecting a noise component generated inside the integrated circuit and an output terminal for outputting the detected noise component to the outside of the integrated circuit.

  According to the present invention, it is possible to reliably suppress internal interference without increasing the size of the receiving device.

1 is an external view of an integrated circuit component according to Embodiment 1 of the present invention. Transparent diagram of integrated circuit component according to Embodiment 1 of the present invention The figure which shows the example of arrangement | positioning of the noise detection part on the semiconductor substrate inside the integrated circuit component which concerns on Embodiment 1 of this invention (placement example 1) The figure which shows the example of arrangement | positioning of the noise detection part on the semiconductor substrate inside the integrated circuit component which concerns on Embodiment 1 of this invention (arrangement example 2) The figure which shows the example of arrangement | positioning of the noise detection part on the semiconductor substrate inside the integrated circuit component which concerns on Embodiment 1 of this invention (arrangement example 3) The figure which shows the example of arrangement | positioning of the noise detection part on the semiconductor substrate inside the integrated circuit component which concerns on Embodiment 1 of this invention (arrangement example 4). The block diagram which shows the structure of the receiver which concerns on Embodiment 2 of this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

(Embodiment 1)
FIG. 1 is an external view of an integrated circuit component 100 according to the present embodiment. FIG. 1 shows a terminal configuration of the integrated circuit component 100. As shown in FIG. 1, the integrated circuit component 100 outputs a GND terminal 101, an integrated circuit function terminal 102 for achieving the function of the integrated circuit component 100, and a noise component generated inside the integrated circuit component 100. A noise output terminal 103 is provided.

  FIG. 2 is a transparent view of the integrated circuit component 100 according to the present embodiment. As shown in FIG. 2, inside the integrated circuit component 100, the semiconductor substrate 104 is connected to the terminals 101, 102, and 103 by bonding wires 105. In addition, a noise detection unit 106 that detects a noise component generated inside the integrated circuit component 100 is provided on the semiconductor substrate 104.

  3A to 3D are diagrams showing arrangement examples 1 to 4 of the noise detection unit 106 on the semiconductor substrate 104 inside the integrated circuit component 100 according to the present embodiment.

<Arrangement Example 1 (FIG. 3A)>
The circuit function operates in the integrated circuit function unit 107 on the semiconductor substrate 104. For supplying power to the integrated circuit function unit 107 and inputting / outputting signals, the integrated circuit function unit 107 is connected to the GND terminal 101 and the integrated circuit function terminal 102 by the bonding wire 105 via the connection pad 108. Is done.

  The noise detection unit 106 is connected to the noise output terminal 103 by a bonding wire 105 through a connection pad 108. The noise detection unit 106 detects a noise component generated inside the integrated circuit component 100 and outputs the detected noise component to the noise output terminal 103.

  For example, if the main component of the noise is a harmonic component of the reference clock of the integrated circuit function unit 107, the noise detection unit 106 of this arrangement example extracts the noise component from the reference clock line of the integrated circuit function unit 107 by loose coupling. It can be realized by a circuit element such as a resistor or a capacitor and an inductor that can extract a noise component from the reference clock line while maintaining a frequency characteristic. In this case, the noise component extraction source may be other than the reference clock line. For example, an extraction source that includes a noise component similar to a noise component radiated from the integrated circuit component 101 and causing interference of a reception signal, such as a power supply line, a ground, and other signal lines, may be used.

<Arrangement Example 2 (FIG. 3B)>
In this arrangement example, the integrated circuit component 100 includes a noise detection loop antenna as the noise detection unit 106. The noise detecting loop antenna 106 can be configured using a wiring pattern on the semiconductor substrate 104, a bonding wire 105, or the like. The noise detection loop antenna 106 is connected to the noise output terminal 103 by a bonding wire 105 through a connection pad 108. This noise detection loop antenna 106 can detect a noise component generated in the integrated circuit function unit 107. The noise component detected by the noise detection loop antenna 106 is output to the noise output terminal 103.

  In this arrangement example, the noise detection loop antenna 106 is arranged so as to surround the integrated circuit function unit 107, but the noise detection loop antenna 106 is used for connection that surrounds a part of the integrated circuit function unit 107. You may arrange | position so that the pad 108 may be enclosed or it may adjoin to the pad 108 for a connection.

<Arrangement Example 3 (FIG. 3C)>
In this arrangement example, the integrated circuit component 100 includes a noise detection monopole antenna as the noise detection unit 106. The noise detecting monopole antenna 106 can be configured using a wiring pattern on the semiconductor substrate 104, a bonding wire 105, and the like. In addition, the noise detecting monopole antenna 106 is connected to the noise output terminal 103 by a bonding wire 105 through a connection pad 108. This noise detection monopole antenna 106 can detect a noise component generated in the integrated circuit function unit 107. The noise component detected by the noise detecting monopole antenna 106 is output to the noise output terminal 103.

<Arrangement Example 4 (FIG. 3D)>
In this arrangement example, the integrated circuit component 100 includes a noise detection patch antenna as the noise detection unit 106. The noise detection patch antenna 106 can be configured using a wiring layer, a multilayer structure, or the like on the semiconductor substrate 104, or can be configured using a conductive plate, a conductive material, or the like as a package. The noise detection patch antenna 106 is connected to the noise output terminal 103 by a bonding wire 105 through a connection pad 108. This noise detection patch antenna 106 can detect a noise component generated in the integrated circuit function unit 107. The noise component detected by the noise detection patch antenna 106 is output to the noise output terminal 103.

  The arrangement examples 1 to 4 of the noise detection unit 106 have been described above.

  In the arrangement examples 2 to 4, three types of antennas are used as the noise detection unit 106, but other antennas may be used as long as they can detect noise components.

  Thus, according to the present embodiment, since the noise detection unit 106 and the noise output terminal 103 are provided inside the integrated circuit component 100, a noise detection sensor or a noise detection antenna is provided outside the integrated circuit component 100. Without being provided, a noise component generated in the integrated circuit component 101, in particular, a high-frequency noise component radiated to the outside of the integrated circuit component 100 by the integrated circuit function unit 107 is efficiently detected and output to the outside of the integrated circuit component 100. be able to.

  Although the present embodiment assumes a semiconductor IC, an integrated circuit component in which a functional component is mounted on a ceramic substrate, a glass epoxy substrate, or the like can have the same configuration as described above.

(Embodiment 2)
FIG. 4 is a block diagram showing a configuration of receiving apparatus 200 according to the present embodiment. The receiving device 200 is a receiving device that displays, for example, a video signal demodulated from a received signal, and includes a video display integrated circuit 206 that includes the integrated circuit component 100 according to the first embodiment.

  In receiving apparatus 200, amplifier 202 amplifies the radio signal received by antenna 201, and outputs the amplified signal to adder 203.

  Adder 203 adds the signal output from amplifier 202 and the signal output from phase / gain controller 207, and outputs the added signal to receiving circuit 204.

  The receiving circuit 204 frequency-converts (down-converts) the signal output from the adder 203 and outputs the frequency-converted signal to the demodulator 205.

  The demodulator 205 demodulates the signal output from the receiving circuit 204 and outputs the demodulated signal to the video display integrated circuit 206.

  The video display integrated circuit 206 generates a signal that can be displayed as a video on the display unit 208 from the signal output from the demodulation unit 205, and outputs the generated signal to the display unit 208. The video display integrated circuit 206 detects a noise component generated in the integrated circuit component 100 when generating a signal that can be displayed as a video by the noise detection unit 106, and the detected noise component is detected by the noise output terminal 103. Is output to the phase / gain controller 207. On the other hand, when generating a signal that can be displayed as a video, a noise component that causes interference of the received radio signal is radiated from the video display integrated circuit 206 to the antenna 201 and is superimposed on the received radio signal.

  The display unit 208 displays an image based on a signal output from the image display integrated circuit 206.

  The phase / gain control unit 207 controls the phase and gain of the noise component output from the video display integrated circuit 206, generates a signal having the same phase and the same gain as the noise component, and adds the generated signals. The data is output to the unit 203. That is, the signal output from the phase / gain control unit 207 to the addition unit 203 is a signal having an opposite phase and the same gain as the noise component detected by the noise detection unit 106.

  Then, the signal output from the amplifier 202 and the signal output from the phase / gain control unit 207 are added by the adding unit 203, so that the noise component superimposed on the received radio signal is suppressed.

  As described above, according to the present embodiment, since the noise detection unit 106 and the noise output terminal 103 are provided inside the integrated circuit component 100 that is a component of the video display integrated circuit 206, the integrated circuit component 100 is provided outside the integrated circuit component 100. Noise components can be suppressed without providing a noise detection sensor or noise detection antenna.

  Therefore, according to the present embodiment, it is possible to reliably suppress internal interference without increasing the size of the receiving device.

  In the present embodiment, the video display integrated circuit 206 is exemplified as a noise source as an example, but the noise source may be a CPU, a DC / DC converter, a communication signal processing circuit, or the like. Even in this case, the same configuration as described above can be adopted.

  The present invention is particularly suitable for a small communication terminal device such as a mobile phone.

DESCRIPTION OF SYMBOLS 100 Integrated circuit component 101 GND terminal 102 Integrated circuit function terminal 103 Noise output terminal 104 Semiconductor substrate 105 Bonding wire 106 Noise detection part 107 Integrated circuit functional part 108 Connection pad 200 Receiver 201 Antenna 202 Amplifier 203 Adder 204 Receiver circuit 205 Demodulator 206 Integrated video display circuit 207 Phase / gain controller

Claims (3)

Detecting means for detecting a noise component generated inside the integrated circuit;
An output terminal for outputting the detected noise component to the outside of the integrated circuit;
Integrated circuit component having The detection means is electrically coupled to circuitry within the integrated circuit;
The integrated circuit component according to claim 1. An integrated circuit component according to claim 1;
An antenna for receiving radio signals;
Control means for controlling the phase and gain of the noise component output by the output terminal;
Adding means for adding the received radio signal and the noise component whose phase and gain are controlled;
A receiving apparatus.

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