KR20010000582A - Automatic switching directive terrestrial TV array antenna - Google Patents

Automatic switching directive terrestrial TV array antenna Download PDF

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Publication number
KR20010000582A
KR20010000582A KR1020000059003A KR20000059003A KR20010000582A KR 20010000582 A KR20010000582 A KR 20010000582A KR 1020000059003 A KR1020000059003 A KR 1020000059003A KR 20000059003 A KR20000059003 A KR 20000059003A KR 20010000582 A KR20010000582 A KR 20010000582A
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KR
South Korea
Prior art keywords
antenna
signal
tuner
antennas
select
Prior art date
Application number
KR1020000059003A
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Korean (ko)
Inventor
안동식
Original Assignee
안동식
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 안동식 filed Critical 안동식
Priority to KR1020000059003A priority Critical patent/KR20010000582A/en
Publication of KR20010000582A publication Critical patent/KR20010000582A/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
    • H01Q3/2605—Array of radiating elements provided with a feedback control over the element weights, e.g. adaptive arrays
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q11/00—Electrically-long antennas having dimensions more than twice the shortest operating wavelength and consisting of conductive active radiating elements
    • H01Q11/02—Non-resonant antennas, e.g. travelling-wave antenna
    • H01Q11/10—Logperiodic antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
    • H01Q21/08—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a rectilinear path
    • H01Q21/12—Parallel arrangements of substantially straight elongated conductive units
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0802—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection
    • H04B7/0817—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with multiple receivers and antenna path selection
    • H04B7/082—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with multiple receivers and antenna path selection selecting best antenna path

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Radio Transmission System (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)

Abstract

PURPOSE: An apparatus and a method are provided to automatically select an antenna having a signal of the maximum strength or an antenna directed toward a signal of the best state by having a directional broad band antenna. CONSTITUTION: A log-periodic antenna or a Yagi antenna is used to receive a ground wave for TV. 4 to 8 number of antennas are arranged uniformly in each direction. The antennas are arranged so that distance between the antennas is set at 1/4 wavelength or the longest antenna beams of the antennas meet one another. When a user inputs a TV channel, a controller in a receiver detects an automatic gain control level which is inputted from a demodulator(2) to a tuner(1) to select an antenna having a signal of the maximum strength. In the case of DTV, the automatic gain control level applied to the tuner(1) or an MSE value in the demodulator(2) is read out to select an antenna which is directed toward a signal of the best state.

Description

지상파 텔레비전 수신기용 지향성 섹터 어레이 안테나와 자동 선택 장치 {Automatic switching directive terrestrial TV array antenna}Automatic switching directive terrestrial TV array antennas for directional sector array antennas for terrestrial television receivers

종래의 지상파 TV 수신시에는 지향성 안테나를 고정된 상태로 여러 채널 중 하나의 방향에 맞추거나, 무 지향성 안테나를 사용하여 여러 방향을 모두 수신토록 하였다. 그러나 이들의 경우 고정된 상태에서는 지향성 안테나로는 여러 채널을 맞출 수가 없어 문제이며, 무 지향성을 채택하게 되면 안테나의 이득이 매우 적고 디지털 TV(DTV)와 같은 경우 다중경로에 매우 취약하여 문제를 일으킨다.In the conventional terrestrial TV reception, the directional antenna is fixed to one of several channels, or the omnidirectional antenna is used to receive all directions. However, in this case, it is a problem that the directional antenna cannot match several channels in a fixed state, and when the non-directional antenna is adopted, the gain of the antenna is very small, and in the case of digital TV (DTV), it is very vulnerable to multipath, causing problems. .

한편 디지털 TV에 사용할 수 있는 회전형 안테나의 경우 이러한 문제는 해결할 수 있지만 회전에 따른 내구성과 안전성이 문제가 될 수 있다.In the case of a rotary antenna that can be used in a digital TV, this problem can be solved, but durability and safety due to rotation may be a problem.

본 발명은 상기한 종래 기술의 문제점을 해결하기 위해 제안된 것으로서, 본 발명의 목적은 안테나를 지향성이 있는 광대역 안테나로 하고 사용자가 TV 채널을 입력하게 되면 아날로그 TV의 경우는 수신기내의 튜너에 입력되는 AGC(Automatic Gain Control) 레벨을 감지하여 신호의 세기가 가장 큰 안테나를 선택하도록 하고, DTV의 경우는 튜너로 인가되는 AGC 레벨이나 복조 칩 내에 있는 등화기 내의 MSE값을 읽어서 신호의 상태가 가장 좋은 방향의 안테나를 선택하도록 하는 것이다.The present invention has been proposed to solve the above problems of the prior art, and an object of the present invention is to set the antenna as a directional broadband antenna, and when the user inputs a TV channel, an analog TV is input to a tuner in a receiver. It detects AGC (Automatic Gain Control) level and selects the antenna with the largest signal strength. In the case of DTV, the best signal state is obtained by reading the AGC level applied to the tuner or the MSE value in the equalizer in the demodulation chip. It is to select the antenna of the direction.

도-1 지향성 섹터 배열 안테나 부 구성도Fig. 1 Directional Sector Array Antenna Sub-Configuration Diagram

도-2 안테나 선택 제어를 위한 수신 부 구성도2 is a block diagram of a receiver for antenna selection control

도-3 수직으로 배열된 안테나 시스템Figure 3-Vertically arranged antenna system

도-4 수평으로 배열된 안테나 시스템이다.4 is an antenna system arranged horizontally.

상기한 목적을 달성하기 위하여 지상파 TV용 광대역 지향성 안테나로는 Log-Periodic 안테나나 Yagi 안테나를 사용하며, 안테나들은 안테나의 빔 폭을 고려하여 4∼8개 정도를 각 방향으로 균등하게 배열하며, 도-3과 같이 수직으로 배열하는 경우는 안테나간 간격을 중심주파수의 대략 1/4파장 정도가 되도록 하며, 수평으로 배열하는 경우는 도-4와 같이 제일 긴 안테나 소자가 있는 면을 서로 맞대서 배열한다.In order to achieve the above object, a wideband directional antenna for a terrestrial TV uses a Log-Periodic antenna or a Yagi antenna, and the antennas are arranged equally in each direction about 4 to 8 considering the beam width of the antenna. In the case of vertical arrangement as in -3, the spacing between antennas is about 1/4 wavelength of the center frequency, and in the case of horizontal arrangement, the surfaces with the longest antenna element are arranged to face each other as shown in FIG. do.

배열된 안테나들은 공청용일 경우 전력을 합성하여 전 방향 (Omni-The arrayed antennas are omni-directional by synthesizing power in case of public use.

directional) 안테나로 사용하고, 개별용일 경우 사용자가 TV 채널을 입력하게 되면 도-2의 수신기내 제어부(④)는 아날로그 신호의 경우는 복조기(②)로부터 튜너(①)에 입력되는 AGC (Automatic Gain Control) 레벨을 감지하여 신호의 세기가 가장 큰 안테나를 선택하도록 하고, DTV의 경우는 튜너(①)로 인가되는 AGC 레벨이나 복조기(②)내에 있는 등화기의 MSE값을 읽어서 신호의 상태가 가장 좋은 방향의 안테나를 선택하도록 하는 것이다.directional) antenna, and in case of individual use, if the user inputs a TV channel, the control unit ④ in the receiver of FIG. 2 is an AGC (Automatic Gain) input from the demodulator (②) to the tuner (①) in case of an analog signal. Control) detects the level and selects the antenna with the largest signal strength. In the case of DTV, the state of the signal is read by reading the AGC level applied to the tuner (①) or the MSE value of the equalizer in the demodulator (②). Try to choose a good orientation antenna.

본 발명으로 만들어진 지상파 TV 수신기에 지향성 섹터 어레이 안테나와 자동 선택 장치를 이용할 경우, 채널만 선택해 주면 자동으로 그 채널에 적합한 방향의 안테나를 선택해 주므로, 실내의 다중 경로 파나 전파 세기가 약한 지역에서 수신이 용이하며 특히 여러 개의 채널이 서로 다른 방향에서 전파가 도래할 경우 매우 유용하게 원하는 채널을 수신하게 해준다.In the case of using the directional sector array antenna and the automatic selection device in the terrestrial TV receiver made of the present invention, if the channel is selected, the antenna is automatically selected in the appropriate direction. It is easy and very useful to receive the desired channel especially when several channels are coming in different directions.

Claims (1)

지상파 아날로그 및 디지털 TV용 지향성 섹터 선택형 안테나에 있어서, 지향성을 가지고 수직 또는 수평으로 섹터별로 배열되어 선택이 가능한 안테나와, 이 안테나들 중에서 하나를 선택하여 수신기의 튜너로 수신된 신호를 넣어주는 SPNT(Single-Pole-N-Through) 스위치와, 이 스위치로부터 전송선로를 통해 신호를 받는 수신기내의 튜너와 이 튜너로부터 신호를 받아 신호를 복조 하는 복조기에 있어, 아날로그 신호의 경우는 복조기에서 튜너로 입력되는 AGC 신호 값을 검출하여 신호의 세기가 가장 큰 안테나를 선택하도록 하고, 디지털 신호의 경우에는 AGC 값과 복조기로부터 MSE값을 읽어서 신호의 상태가 가장 양호한 안테나를 선택하도록 하는 신호를 발생시키는 제어부와, 상기 안테나 스위치와 수신기의 제어부를 연결 시켜주는 통신선로로 구성되어 아날로그 및 디지털 TV의 최적 수신방향의 지향성 안테나를 선택하도록 하는 것을 특징으로 하는 자동 방향 선택 안테나 장치In the directional sector select antenna for terrestrial analog and digital TV, the antenna is directional and can be selected vertically or horizontally arranged by sector, and an SPNT which selects one of these antennas and inputs the received signal to the tuner of the receiver. Single-Pole-N-Through) switch, a tuner in the receiver that receives the signal from the switch via the transmission line, and a demodulator that receives the signal from the tuner and demodulates the signal.In the case of analog signals, it is input from the demodulator to the tuner. A control unit for detecting an AGC signal value to select an antenna having the largest signal strength, and in the case of a digital signal, reading a AGC value and an MSE value from a demodulator and generating a signal for selecting an antenna having the best signal state; Consists of a communication line connecting the antenna switch and the control unit of the receiver Automatic direction selection, characterized in that to select the directional antenna in the best reception direction of the log and the digital TV antenna device
KR1020000059003A 2000-10-07 2000-10-07 Automatic switching directive terrestrial TV array antenna KR20010000582A (en)

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KR1020000059003A KR20010000582A (en) 2000-10-07 2000-10-07 Automatic switching directive terrestrial TV array antenna

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100487304B1 (en) * 2001-08-17 2005-05-04 엘지전자 주식회사 Digital TV receiver having embebdded internal antenna and antenna controlling apparatus
US6946993B2 (en) 2002-09-27 2005-09-20 Electronics And Telecommunications Research Institute Digital broadcasting service receiver for improving reception ability by switched beam-forming
CN113488781A (en) * 2021-06-09 2021-10-08 上海铂联通信技术有限公司 Direction-finding antenna system suitable for multiple environments

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100487304B1 (en) * 2001-08-17 2005-05-04 엘지전자 주식회사 Digital TV receiver having embebdded internal antenna and antenna controlling apparatus
US6946993B2 (en) 2002-09-27 2005-09-20 Electronics And Telecommunications Research Institute Digital broadcasting service receiver for improving reception ability by switched beam-forming
CN113488781A (en) * 2021-06-09 2021-10-08 上海铂联通信技术有限公司 Direction-finding antenna system suitable for multiple environments

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