Main component is radio frequency connector connector of radio frequency coaxial, radio frequency 3 coaxial connector and connector of radio frequency of double core semmetry 3 kinds big.

 

1, radio frequency is coaxial: Basically use transmit transverse electromagnetic wave (TEM wave) ;

 

2, radio frequency 3 coaxial: Basically use at having the situation of higher demand to screen efficiency, transmit transverse electromagnetic wave (TEM wave) or transmission pulse;

 

3, double core is symmetrical: Basically use the digital signal with transmission not quite high rate.

 

Sort of connector of radio frequency coaxial differentiates:

 

N connector

 

N connector (Type N Connector) , for threaded coupling, can rotate the lock is decided. It is one of the first batch of connector that can be used at transmitting microwave frequency signal, and at 20 centuries 40 time are invented by the Paul Neill of shellfish Er lab, name with the initial of Neill. The signal frequency limits that N connect supports is 0 to 11GHz, enhance a type to be able to achieve 18GHz. Characteristic impedance has 2 kinds, 50 ohm (use extensively at system of mobile, wireless data, paging to wait) with 75 ohm (basically use at cable television system) .

 

BNC connector

 

BNC connector also is one of radio frequency connector that often see, it is a kind of diminutive can realize fast connective to block buccal type connector, the full name of BNC is Bayonet Nut Connector (card is buckled cooperate model connector, ground of this name image described external form of this kind of connect) , the meaning of original BNC (Bayonet Neill–Concelman) it is to come from actually at 2 contriver, the initial of the surname of Paul Neill and Carl Concelman, paul Neill also is the contriver of N connector at the same time. BNC connector is used extensively in equipment of electron of equipment of wireless communication system, TV, test, other radio frequency, inchoate computer network ever also used BNC connector. The signal frequency limits that BNC connect supports is 0 to 4GHz. Characteristic impedance has 2 kinds: 50 ohm and 75 ohm.

 

SMA connector

 

SMA connector is a kind of coaxial connector that applies extensive small-sized threaded coupling, it has actor of frequency bandwidth, function, Gao Ke to lean, the characteristic with long life. Cable of radio frequency of the join in the radio frequency loop that SMA connector applies to microwave equipment and digital communication system or microstrip line, commonly used on wireless equipment the GPS clock interface on veneer and base the test mouth of module of station radio frequency. The full name of SMA is SubMiniature Version A, at 20 centuries 60 time are invented. The signal frequency limits that SMA connect supports arrives from dc 18GHz, ministry classification OK and highest support arrives 26.5GHz. Characteristic impedance is 50 ohm.

 

SMB connector

 

The full name of SMB is SubMiniature Version B, it is a kind of diminutive pushs connector of coaxial of locking type radio frequency, have volume small, weight is light, use property of convenient, report admirable wait for a characteristic, join coaxial cable is used in the high frequency loop that applies to radio equipment and electronic instrument. Commonly used on wireless equipment at base station side E1 transmits cable close-up of DDF of join radical station is defeated by a box to use. SMB connector is invented at 20 centuries 60 time, size is smaller than SMA connector. Characteristic impedance has 2 kinds: 50 ohm and 75 ohm. Arrive in dc inside 4GHz frequency limits have outstanding electric character. SSMB is the SMB connector that confuses your version, can support 12.4GHz.

 

SMC connector

 

The full name of SMC is SubMiniature Version C, also be the connector of radio frequency coaxial of acting 1960 invention. It uses interface of #10-32 UNF whorl, it is OK to arrive in dc inside 10GHz limits provide excellent electric performance. SMC official head has exterior thread, there is nut of form a complete set on SMC mother head. Characteristic impedance has 2 kinds: 50 ohm and 75 ohm, it is reached for cable of small-sized and coaxial wire special to dimension the printed circuit that care about board offerred interconnection way.

 

 

F connector

 

F connect is the radio frequency connector that everybody interviews in daily life, apply to the domain such as the join of modem of TV of cable television, satellite, cable television and television extensively. It can use the situation that impedance matchs a requirement, also can use the place that Yu Fei matchs, its characteristic is threaded coupling, insert close convenient. Performance is steady. F connect is took the place of 1950 by Eric Winston of inchoate invention, the join connect of the VHF TV antenna that has made common see in acting 1970 United States. The price of F connect is very low, characteristic impedance is 75 ohm, highest frequency can support 1GHz or 2.4GHz commonly.

 

RCA connector

 

RCA is the abbreviate of Radio Corporation Of American, because RCA connect is in by this company,era invented 1940. RCA common calls lotus socket, call AV terminal, AV interface again, almost all televisions, disc player kind the product has this interface. It is not to be which kind of interface technically to design, can use in frequency already, can use in common video signal again. The model bears the weight of signal limits is in 0-100MHz.

 

7/16 DIN connector

 

DIN (also call 7/16 or L29) series coaxial connector is a kind larger the threaded coupling of 50 ohmic impedance implement, have voltage of firm stability, small loss, job advanced characteristic, and have waterproof structure for the most part, can use at outdoors the connector that transmits as medium, high-energy quantity, be transmitted extensively with Yu Weibo and in mobile system. Commonly used at base connect of line of station day make a present of, aerial connect. DIN is the abbreviate that German standardization learning meets, it is its those who make a series of connector standard. DIN connect and N connect is very similar, DIN head diameter is big, it is 2 times of N head diameter about.

 

TNC connector

 

TNC is the abbreviate of Threaded Neill–Concelman, see Neill–Concelman some look familiar, was opposite, the NC of the NC of TNC and BNC is same, have identical inventor that is to say. TNC connector is a mutation of BNC connector, used threaded coupling means. Characteristic impedance is 50 ohm, limits of optimal job frequency is 0-11GHz. In microwave frequency paragraph, TNC connect is better than BNC connect function. It is had fight Zhen Xingjiang, dependability tall, machinery and electric performance are good wait for a characteristic, apply at cable of coaxial of radio frequency of the join in radio equipment and electronic instrument widely.

 

UHF connector

 

This kind of connect has quite long history, in the period before World War II this kinds of connect has begun to apply. Its ” of connector of another name “UHF originates right at that time the definition of UHF (the frequency of prep above 30MHz is UHF frequency limits namely) . And the test to this kind of connector shows its character basically suits 100MHz now the left and right sides and the following frequency are used. The VHF frequency that indicates normally now namely paragraph.

 

Of this kind of connector most showing a characteristic is a among plug thicker center conductor (make an appointment with 4mm thick) . And join and solid formula use contact to go up inside on whorl and electrical outlet outside the means with mutual and occlusive whorl. This kind of outlet does not have waterproof ability, answer to wait for the influence of natural condition particularly carefully to rainwater when the erect outdoor so.

 

MCX connector

 

MCX connector invention took the place of 1980, it has identical in-house contact and insulator measure at SMB connector, but the volume that compares SMB wants small 30% . The full name of MCX is Mirco Coaxial. Relative standard sets in European CECC 22220. What use as a result of MCX connector is to push type join way, this makes the join of connector and depart very rapid, shortened the installation time of connector. MCX connector still has good electric performance when frequency achieves 6GHz, OK still comfortable deserve to include a variety of cable such as half firm cable and flexible cable, join is reliable, life is long.

 

Dimension of model of radio frequency connector

 

Generally speaking, of connector of general radio frequency advocate say code name uses home, outside general advocate weigh code name. Of special product advocate weigh code name to make specific provision by detailed standard, and how normative use symbol.

 

The model of connector of general radio frequency by advocate call code name and configuration code name two parts composition, with short horizontal line “-” is separated among. The condition that other requires to explain can make a provision in detailed criterion, separate with short horizontal line and configuration code name.

 

Code name of 17 kinds of specieses introduces

 

N: Outer conductor internal diameter is 7mm(0.276 inch) , the connector of coaxial of whorl type radio frequency of characteristic impedance 50Ω(75Ω) . (IEC169-16)

 

BNC: Outer conductor internal diameter is 6.5mm(0.256 inch) , the connector of coaxial of radio frequency of formulary of lock blocking an opening of characteristic impedance 50Ω . (IEC169-8)

 

TNC: Outer conductor internal diameter is 6.5mm(0.256 inch) , the connector of coaxial of whorl type radio frequency of characteristic impedance 50Ω . (IEC169-17)

 

SMA: Outer conductor internal diameter is 4.13mm(0.163 inch) , the connector of coaxial of whorl type radio frequency of characteristic impedance 50Ω . (IEC169-15)

 

SMB: Outer conductor internal diameter is 3mm(0.12 inch) , of characteristic impedance 50Ω push connector of coaxial of lock formulary radio frequency. (IEC169-10)

 

SMC: Outer conductor internal diameter is 3mm(0.12 inch) , the connector of coaxial of whorl type radio frequency of characteristic impedance 50Ω . (IEC169-9)

 

SSMA: Outer conductor internal diameter is 2.79mm(0.11 inch) , the connector of coaxial of whorl type radio frequency of characteristic impedance 50Ω . (IEC169-18)

 

SSMB: Outer conductor internal diameter is 2.08mm(0.082 inch) , of characteristic impedance 50Ω push connector of coaxial of lock formulary radio frequency. (IEC169-19)

 

SSMC: Outer conductor internal diameter is 2.08mm(0.082 inch) , the connector of coaxial of whorl type radio frequency of characteristic impedance 50Ω . (IEC169-20)

 

SC (SC-A and SC-B) : Outer conductor internal diameter is 9.5mm(0.374 inch) , the whorl type of characteristic impedance 50Ω (two kinds of model have thread of different type join) connector of radio frequency coaxial. (IEC169-21)

 

APC7: Outer conductor internal diameter is 7mm(0.276 inch) , the connector of coaxial of accurate and medium-sized radio frequency of characteristic impedance 50Ω . (IEC457-2)

 

APC3.5: Outer conductor internal diameter is 3.5mm(0.138 inch) , the connector of coaxial of whorl type radio frequency of characteristic impedance 50Ω . (IEC169-23)

 

K: Outer conductor internal diameter is 2.92mm(0.115 inch) , the connector of coaxial of whorl type radio frequency of characteristic impedance 50Ω .

 

OS-50: Outer conductor internal diameter is 2.4mm(0.095 inch) , the connector of coaxial of whorl type radio frequency of characteristic impedance 50Ω .

 

F: The connector of coaxial of whorl type radio frequency that uses in the cable dispatching system of characteristic impedance 75Ω . (IEC169-24)

 

E: The connector of coaxial of whorl type radio frequency that uses in the cable dispatching system of characteristic impedance 75Ω . (IEC169-27)

 

L: Connector of coaxial of radio frequency of metric whorl type, threaded coupling size indicates with the arabic numerals after “L” .

 

The model of radio frequency connector comprises give typical examples:

 

(1) SMA-JW5, TNC-JW5

 

Express SMA model reach TNC curved type to be not outlet of sealed radio frequency, the conductor inside plug is the contact that insert a needle, deserve to use SYV-50-3 cable.

 

(2) N-50KFD, SMA-KFD

 

State flange is installed, impedance is the N of 50Ω and electrical outlet of SMA microstrip radio frequency, conductor is the contact that insert aperture inside.

 

(3) SMA-KE, 75KHD

 

Express to solder directly the impedance on circuit board inserts aperture join to cry for the SMA microstrip of 50Ω implement the SMB that reachs impedance to be 75Ω inserts aperture connector.

 

(4) turn receive implement comprise a method with the model of impedance converter, with plug or electrical outlet model is fundamental derive, use following form commonly:

 

① turns receive implement model, part of its type code name uses connector advocate weigh code name (turn inside series receive implement) reach fractional form (acceptance turns between series implement) express.

 

Be like: N-75JK: State one aspect of the matter is the contact that insert a needle, another end is the contact that insert aperture, impedance is received to turn inside the N of 75Ω series implement.

 

Be like: N/BNC-50JK: State one aspect of the matter is the N contact that insert a needle, another end is the BNC contact that insert aperture, impedance is received to turn between the series of 50Ω implement.

 

The model of ② impedance converter, its model or configuration code name express with fractional form:

 

Be like: N-50J/75K: State one aspect of the matter is 50Ω outlet, electrical outlet of 75Ω of other one aspect of the matter, two end all are “N” model impedance converter.

 

 

Note:

 

DIN7-16 is OK and compatible L29 connector.

 

3.5mm and 2.92mm can hurt join with SMA nondestructive

 

3.5mm and 2.92mm are an unit with outer conductor internal diameter.

 

Imperial N and metric L16 cannot be mixed with

 

Imperial BNC and metric Q9 also cannot be mixed with.

 

Dimension of norms of connector of radio frequency coaxial

 

 

(1) SMA connector: Connector of radio frequency coaxial is the most commonly used radio frequency / one of microwave connector. SMA connector is used get together fill of medium of 4 fluorine ethylene, volume is minor, daily and applicable frequency limits is DC ～ 18GHz (also had seen the SMA connector to 40G) , as compatible as machinery of connector of 3.5mm, 2.92mm.

 

(2) 3.5mm connector: 3.5mm connector is outer conductor internal diameter is 3.5mm, characteristic impedance is 50Ω , join orgnaization is the connector of 1/4-36UNS-2 imperial whorl, working frequency can amount to 33GHz, use air medium. The outer conductor of 3.5mm connector relatively SMA connector is thick, mechanical strength is good at SMA connector. Connector of SMA of electric function excel, and mechanical wear, but repeatability all connector of prep above SMA.

 

(3) 2.92mm connector: Internal diameter of 2.92mm connector outer conductor is 50Ω for 2.92mm, characteristic impedance, conductor diameter is the connector of radio frequency coaxial that orgnaization of 1.27mm, join is 1/4-36UNS-2 imperial whorl inside, 46GHz of ～ of DC of working frequency limits.

 

(4) 2.4mm connector: Outer conductor internal diameter is 2.4mm, characteristic impedance is 50Ω , use air medium, working frequency can amount to 50GHz.

 

Market of radio frequency connector develops way

 

1. small size. SSMA, SSMC, appear of connector of series of MMCX connector and 1.92am, 1.85 Mm, 1mm in succession, satisfied overall especially the demand that dimensional electron system expands.

 

2. tall frequency, wide transmission bandwidth. The working frequency upper limit of 2.92mm series connector can amount to 46GHz; The working frequency upper limit of connector of 2.4 Mm series can amount to 50Gnz; The working frequency upper limit of connector of 1.85 Bin series can amount to 65GHz; The connector of 1 Mm series that certain developed country develops already fastened coaxial the working frequency upper limit of all extends 110GHz, satisfied the requirement that weaponry expands to more high frequency rate.

 

3. is muti_function: Outside removing a bridge effect, hold the function that handles signal concurrently, the wave that be like filter, attune phasic, mixing, attenuation, demodulation, be restricted etc.

 

4. low standing wave and loss: Satisfy the need that weapon system and nicety measure.

 

5. high capacity and power: High capacity, high-power basically gets used to the development need of information freeway.

 

6. surface sticks outfit: Basically get used to SMT technology (the surface sticks outfit technology) development need, be helpful for simplifying multilayer the wiring structure design of printed board.

 

Above is the intellectual introduction about direction of dimension of classification of radio frequency connector, norms, model, development, to suit overall equipment miniaturization, modular, high frequency change, the development that high accuracy, Gao Ke relies on, new product of radio frequency connector is come out by development ceaselessly, make radio frequency connector ceaseless the way that compares to standing wave of miniaturization, tall reliable, tall frequency, high power, low voltage develops.