KR-102963840-B1 - Tuner device

KR102963840B1KR 102963840 B1KR102963840 B1KR 102963840B1KR-102963840-B1

Abstract

A tuner device comprising a box-shaped metal tuner case, a plurality of connectors mounted on one side of the tuner case, a plurality of signal transmission connection pins installed on the other side of the tuner case, and at least one grounded electrode installed near the connection pins.

Inventors

요시다 토시카즈
타카쿠와 히로시게

Assignees

소니 세미컨덕터 솔루션즈 가부시키가이샤

Dates

Publication Date: 20260511
Application Date: 20190320
Priority Date: 20180507

Claims (7)

A box-shaped metal tuner case, and At least four coaxial connectors mounted on one side of the above-mentioned box-shaped metal tuner case, and A plurality of signal transmission connection pins installed on the other side of the above-mentioned box-shaped metal tuner case, and It is equipped with at least one foot electrode installed near the above-mentioned connection pin and grounded, and A tuner device in which at least four coaxial connectors are each mounted in areas near the four corners of one side of the above-described box-shaped metal tuner case.
In paragraph 1, A tuner device having a plurality of the aforementioned electrodes installed to surround the installation area of the aforementioned connection pin.
In paragraph 1, The above-described box-shaped metal tuner case has a front, back, top, bottom, left side, and right side, and At least four coaxial connectors are installed on either the front or the rear surface, and A tuner device having the connection pin and the foot electrode installed on one of the upper and lower surfaces.
In paragraph 1, A tuner device having a shield portion, which is a separate part from the box-shaped metal tuner case, provided in each of the areas near the four corners inside the tuner case.
In paragraph 4, The above shield portion has first and second plate-shaped members, each having one end joined thereto, and A tuner device in which, opposite to one end of the above-mentioned joined end, the other ends of the first and second plate-shaped members are respectively joined to the inner surface of the surrounding surface members near the four corners.
In paragraph 1, A reception signal of satellite digital broadcasting is transmitted through the above-mentioned at least four coaxial connectors, and A tuner device through which the IF signal of a satellite digital broadcast is transmitted via the above connection pin.
In paragraph 6, A tuner device in which the above satellite digital broadcast is advanced BS broadcasting.

Description

Tuner device The present invention relates to a tuner device used for receiving advanced broadband satellite digital broadcast. In current satellite digital television broadcasting, television signals are transmitted at an intermediate frequency (appropriately referred to as IF (Intermediate Frequency). Also, IF is used as a term to denote both the intermediate frequency and the intermediate frequency signal). However, for High-Broadband Satellite Digital Broadcasting (appropriately referred to as High-BS Broadcasting), which is scheduled for practical broadcasting in 2018, the IF is extended to approximately 2.1 GHz to 3.2 GHz in order to provide 4K/8K ultra-high definition television broadcasting. Due to this expansion of frequency bands, there are concerns regarding mutual interference with other wireless systems (Wi-Fi (registered trademark)). For example, there are concerns that the data transmission speed of Wi-Fi (registered trademark) may slow down due to interference from leaked IF signals. In addition, there were concerns that radio waves from devices used in daily life, such as microwave ovens, could enter high-altitude BS broadcasting reception facilities and cause reception interference. Under these circumstances, a law establishing the following technical standards regarding radio wave leakage, etc., from satellite broadcasting reception facilities has been enacted (Reference: Non-patent Document 1). Frequency: 2224.41–3223.25 MHz Leakage threshold (limit for secondary radio wave leakage): -49.1 dBm or less (46.2 dBμV/m or less at a distance of 3m) Bandwidth: Per 33.7561 MHz FIG. 1 is a hexahedral view of one embodiment of the present technology. FIG. 2 is a perspective view and a partially enlarged view of one embodiment of the present technology. FIG. 3 is a graph used to explain one embodiment of the present technology. FIG. 4 is a graph used to explain one embodiment of the present technology. FIG. 5 is a perspective view used to explain the internal structure of one embodiment of the present technology. Figure 6 is a diagram showing the passing characteristics of an interference wave to the signal terminal in a conventional model. FIG. 7 is a diagram showing the passing characteristics of an interference wave to a signal terminal of one embodiment of the present technology. FIG. 8 is a diagram showing the passing characteristics of an interference wave to a signal terminal of one embodiment of the present technology. FIG. 9 is a diagram showing the passing characteristics of an interference wave to a signal terminal of one embodiment of the present technology. Figure 10 is a diagram showing the frequency arrangement used for explaining high-altitude BS broadcasting. Figure 11 is a diagram illustrating the overlap of frequency bands. The embodiments described below are preferred embodiments of the present technology and include various technically desirable limitations. However, the scope of the present technology is not limited to these embodiments unless otherwise stated in the following description to specifically limit the present technology. Meanwhile, the description of the present technology is carried out in the following order. <1. Problems in Advanced BS Broadcasting> <2. One embodiment of the present technology> <3. Variation Example> <1. Problems in Advanced BS Broadcasting> With reference to FIGS. 10 and FIGS. 11, problems regarding high-altitude BS broadcasting will be explained. FIG. 10 shows the frequency of the IF in high-altitude BS broadcasting. For example, the center frequency of the IF for channel number BS-1 is 1049.48 MHz. Channels BS-3, BS-5, BS-7, ..., BS-23 are arranged in order. The center frequency of the IF for channel number BS-23 is 1471.44 MHz. A CS-IF is arranged in a frequency band higher than the IF of this BS. For example, the center frequency of the IF for channel number ND-2 is 1613 MHz, and channels ND-2, ND-4, ND-6, ..., ND-24 are arranged in order. For example, the center frequency of the IF for channel number ND-24 is 2053 MHz. The IFs of these BS-1 to BS-23 and ND-2 to ND-24 are channels of existing BS broadcasting and CS broadcasting, and the radio waves are first-order circular polarization. In high-level BS broadcasting, left-circle polarization is used. That is, channels BS-2, BS-4, ..., BS-24 and channels ND-1, ND-3, ND-5, ..., ND-23 are left-circle polarized channels. For example, the center frequency of channel BS-2 is 2241.66 MHz, and the center frequency of channel BS-24 is 2663.62 MHz. Also, the center frequency of channel ND-1 is 2766 MHz, and the center frequency of channel ND-23 is 3206 MHz. As shown in Fig. 11, in the frequency bands of channel numbers BS-12 and BS-14, there are interference signals caused by unwanted radiation generated from other wireless systems (Wi-Fi (registered trademark)) or industrial equipment such as microwave ovens. Therefore, leakage of radio waves in this frequency band from the tuner device needs to be