Antenna

The input impedance of aerial is the ratio that aerial feed end inputs voltage and input electric current. The join of aerial and line of make a present of, optimal case is aerial input impedance is pure resistor and the characteristic impedance that

Posted at 08-08-09 by Admin views(1022)

The active of aerial brace up child the distance makes an appointment with 5 ～ between feed end 10 millimeter. I was not added evenly - lopsided converter, 50 ohmic and coaxial cable receives active directly brace up child. Horizontal Zhen Zizu fight

Posted at 08-08-09 by Admin views(1143)

One of basic functions of emissive antenna are an energy that obtains from line of make a present of to all round dimensional radiate goes out, of basic function is the directional radiate that wants place of major energy face. Perpendicular half pla

Posted at 08-08-09 by Admin views(1320)

Still remember the Zepp Ant in front? If we apply it in the frequency of VHF above, that Mo the after of its Size decrescent we change it very easily into perpendicular erect. It became half perpendicular antenna. Appearance is like J , if pursue 7 (

Posted at 08-08-11 by Admin views(2356)

As a result of the swift and violent development of mobile, at present a lot of countrywide areas are put in the situation that much net coexists, namely net of A, B, G3 coexists, the G net that has some of area among them still includes GSM9000 and

Posted at 08-08-09 by Admin views(1156)

J pole child (J-Pole) aerial blasts off by wave of a 1/2 yuan match with drive of wave of a 1/4 implement form, it is equal in value at from extreme drive occasionally extremely aerial, because of its conductor shows J model, reason calls J pole chil

Posted at 08-08-09 by Admin views(3121)

A lot of antenna if half Zhen Zitian line, amount to antenna of Zhen Zitian line, round is balance feed, they have two feed place, they have a characteristic: The signal tension that two feed hint (or electric current) phasic it is each other is in o

Posted at 08-08-09 by Admin views(1532)

This is a tall gain that makes easily simply directional antenna, classical structure of 8 wood antenna, pursue as follows: Note: 8 wood invent Japanese this kind of antenna, friend calls 8 wood aerial. In the graph linear brace up child with alumini

Posted at 08-08-08 by Admin views(1481)

Aerial is the tool that receiver takes signal, use 8 wood for the most part with the antenna that receives at long-range FM broadcasting (YAGI) antenna, the unit number of 8 wood antenna receives an effect receive range, unit number is more, criterio

Posted at 08-08-08 by Admin views(1589)

Want to do a few each frequency of late paragraph 8 wood are directional aerial, saw a few about 8 wood the book of directional antenna, summed up the following experience (the rule) , it is the thing on the book, the likelihood is not certain and co

Posted at 08-08-08 by Admin views(864)