TWM263635U - Broadband monopole antenna - Google Patents

Description

M263635 IV. Creation Instructions (1) [Technical Field to which the New Type belongs] This creation is about a monopole antenna (Μ 〇 〇 p 〇 1 e A nte η na), especially a helical structure on the top of a rod-shaped radiating end. The wideband monopole antenna has the advantages of simple structure, easy production, reduced production cost, and all-directional non-directional transmission and reception, and can be applied to those who use the frequency of digital television terrestrial broadcasting standards. [Previous technology], the front end of the antenna / radio communication system, in short, it uses electromagnetic waves as a carrier to transmit information, so it is a converter that radiates or receives electromagnetic f. When considering the use of antennas The antennas designed for the purpose and the working time are different in size and shape, and the industry must plan the required electromagnetic wave characteristics according to the needs to design an efficient and radiating conductive structure. And when wireless communication equipment becomes a part of life, these wireless communication products can be carried with them or placed in vehicles. They are "antennas" for wireless communication front-ends, and their design requirements are thin, short, and easy to carry or install, or the process is simple. Or, the cost is low, and the effect is the same or better, is the goal that the industry wants to achieve.

In recent years, the development of digital video broadcasting technology has matured, and China has also established relevant transmission standards for digital video broadcasting. In digital television terrestrial broadcasting, the European standard DVB-T standard is used, and the transmission frequency domain is the UHF band. The width (Bandwidth) is 6MHZ. At present, Taiwan has started broadcasting digital TV, depending on the frequency of the terrestrial broadcasting channel. The antenna mode used must match the transmission line 75 ◦ regulatory mode. Therefore, if the purpose of using the antenna for digital TV terrestrial broadcasting is considered, it must be suitable for indoor households M263635 and creative instructions (2) (including vehicles). At present, the antennas used in wireless digital television terrestrial broadcasting, in order to achieve frequency and miniaturization, the conventional technology mainly includes an antenna body, low noise amplifier (LNA, Low Noise Amplifier), and power amplifier (PA, Power Amplifier) ···, etc., to increase the bandwidth and gain value of the antenna's frequency of use, and because the antenna has a large number of parts, it is usually necessary to provide a protective casing outside the line. However, the conventional technology is complicated due to the complicated structure of parts and components, so the volume is large and the manufacturing process is continuous. Therefore, the production cost is taken into consideration. This creation is aimed at the use of broadband frequencies: 2 antenna structure. = Effectiveness of directional transceiver 'and can reduce production cost [New content] The purpose of creation is to provide a wideband monopole green' edge antenna made of conductive metal # 甘 [ώ 括 含 — 天 之 — ^ wavelength determined , And one of the other helmets _ λ A mountain against the wave frequency quarter circuit, its 鳊 is a feeding end to be coupled to an electric one. It is characterized in that the other end of the feeding end of the antenna is a spiral ::: combining antennas for the purpose of "the purpose" provided by this creation-a kind of wide-band and simple structure, f γ hall, and orientation-free private transmission and reception [implementation] G] "Yijian" can further reduce production costs. Li Zheng,

In order to adjust and match the frequency of the monopole rod-shaped gold input terminal 1 1 according to the material used by the carrier section 11,

M263635 IV. Creation Instructions (3) The end, Tian Jie Luben's creation evening a. People heard the purpose, characteristics and effects, I would like to elaborate on δ, and the specific embodiments are described below. 、、、 :: The picture shows the schematic diagram of the wideband monopole antenna of this creation. I includes a rod-shaped metal part 11 and a spiral metal part 丨 2 \ of the part η—end 112 is connected to the spiral metal part 12 ″, and end 2 is Two 1 is coupled to the electronic coupling circuit, so that the structure can achieve a wide purpose. In addition, the overall length of this wideband monopole antenna is determined by the frequency of 1/4 λ, and constitutes the “Bao 镅 罝 夭 蝻 、”, called the rod-shaped metal length of the early frequency antenna 1 and the metal portion of the screw. The number of coils, the coil spacing, and the materials used can be reported in accordance with the requirements of the frequency of use and matching impedance, and can still achieve the effect of broadband transmission and reception. According to the technical content of the broadband monopole antenna, Tian created another specific implementation example of the use frequency between 500 ~ 600MHz, and matched with the transmission line 75 ° specification mode, as shown in the second figure. # 中 The wideband monopole antenna includes a rod-shaped metal part 1 丨 and a spiral metal part 丨 2, which are composed of metal wires with a diameter between 0.95 and 1.45, with a total length of 86.7_ to 80 · 7πιιη The spiral metal part 12 is composed of 2 spiral coils with a coil diameter between 13_ to 11 and a coil pitch between 3.25mm to 2 75mm. See the feed end of the frequency monopole antenna 1丨 丨 丨 Connected to a base 22 through connector 2; the base 22 is matched with the transmission line 3 of the 75 Q impedance specification and the connector 3 2 of the FT ype specification; and according to this creation, the antenna body does not need to be separately Set a protective shell. As shown in the second figure, the use frequency range of 500 ~ 600MHz can be applied to the current RF frequency domain of digital audio and video terrestrial broadcast broadcasting. The third picture shows this creation. Explanation (4) '-When the frequency is in the range of 5 0 ~ 600 MHz, the electricity 1 of this creation, the return loss of lice characteristics (Return Loss), and the voltage standing wave ratio (VSWR) are measured _ ^ ^ L =; ”: The rate is in the range of 5 ° 0 ~ 6_z, and the opposite is true: two ('two, L0s measured 1 values are lower than-丨 dB, the voltage standing wave ratio (Vswr) measured values are small can reach Λν according to the The effect of the built-to-intermediate process and the reduction of production costs. The above are the detailed content of this creation. The content of the creation is better. You r are all covered by the equal changes and modifications made by Ben She ^ Shen ^ Yue Zhuanwei, and are within the scope of the patent application for this creation.

M263635 Brief description of the diagram [Simplified illustration of the diagram] The first picture is a schematic diagram of the original broadband monopole antenna; the second picture is a schematic diagram of the embodiment of the original broadband monopole antenna; and the third picture is the original broadband monopole antenna Electrical Characteristics of the Example: Reflection Loss (Return Loss) and Voltage Standing Wave Ratio (VSWR) Test Chart [Description of Main Component Symbols] I Wideband Monopole Antenna Body II Rod-shaped Metal Portion

III Antenna feed end 112 One end of rod-shaped metal part 12 Spiral metal part 21 Connector 22 Base 31 Transmission line 3 2 F-Type connector

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Claims (1)

M263635 5. Scope of patent application 1. A wideband monopole antenna, including an antenna, the antenna is made of conductive metal, its length is determined by the quarter-wavelength of the carrier frequency, and one end is the feeding end for coupling It is connected to an electronic coupling circuit, which is characterized in that the other end of the feeding end of the antenna is a spiral shape. 2. If the wideband monopole antenna of item 1 of the patent application range, wherein the length of the antenna is between 86.7mm to 80.7mm, and the helical configuration is a 2 spiral coil, the coil pitch is 3.25 mm To 2. 7 5 mm and coil diameter between 13 mm to 11 mm. 3 · If the wideband monopole antenna of item 1 or item 2 of the patent application scope, where The conductive metal is a metal wire having a diameter between 0.95 mm and 1.45 mm. 4 · If the wideband monopole antenna of item 1 or item 2 of the scope of patent application, the impedance of the antenna is 75 ohm impedance. Page 10