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spe - 13 - 8 - 067 /c / ez page 1 of 11 specification patent pending part no. : fxp 75 .07.0045b product name : fxp.75 atom 2.4 ghz series ultra - miniaturized 2dbi bluetooth antenna features : patent pending worldwide smallest cabled 2.4ghz antenna ideal for b luetooth earphones flexible ultra low p rofile 5.9*4.1*0.24 mm adheres directly to inside of product housing form factor and cable routing convenient for integration ipex mhf1 c onnector ( u.fl compatible ) 4 5mm ? 0.81mm mi ni - coaxial cable rohs compliant
spe - 13 - 8 - 067 /c / ez page 2 of 11 1. i ntroduction the fxp75 atom is a super small monopole ultra - low profile antenna for 2.4 ghz band that includ es bluetooth , wi - fi , zigbee and ism bands application . the fxp 75 has a peak gain of 2.5dbi at 2.4ghz and efficie ncies of 45% . this taoglas patent pending antenna is unique in the market . two years of constant research and development have created the world's smallest coax cabled true 2.4ghz antenna. made from poly - flexible mate rial, the antenna has a tiny form fact or of 5.9*4.1*0.24mm and has double - sided 3m tape for easy peel and stick mounting. the cable routes conveniently directly out of the bottom of the antenna, reducing the volume the antenna takes up in the device to an absolute minimum compar ed to o ther designs. the fxp 75 is the ideal all - round antenna solution for fitting into narrow spaces and still maintaining high performance, for example in a bluetooth earphone where metal and electrical noise degrades onboard smt antenna performance. the fxp75 is s mall enough to be routed away from metal and electrical noise to deliver much improved range and reliable sound quality in bluetooth earphones. many module manufacturers specify peak gain limits for any antennas that are to be connected to that module. those peak gain limits are based on free - space conditions. in practice, the peak gain of an antenna tested in free - space can degrade by at least 1 or 2dbi when put inside a device. so ideally you should go for a slightly higher peak gain antenna than mentioned on the module specification to compensate for this effect, giving you better performance. upon testing of any of our antennas with your devi ce and a selection of appropriate layout, integration technique, or cable, taoglas can make sure any of our antennas peak gain will be below the peak gain limits. taoglas can then issue a specification and/or report for the selected antenna in your device that will clearly show it complying with the peak gain limits, so you can be assured you are meeting regulatory requirements for that module. for example, a module manufacturer may state that the antenna must have less than 2dbi peak gain, but you dont need to select an embedded antenna that has a peak gain of less than 2dbi in free - space. this will give you a less optimized solution. it is better to go for a slightly higher free - space peak gain of 3dbi or more if available. once that antenna gets integ rated into your device, performance will degrade below this 2dbi peak gain due to the effects of gnd plane, surrounding components, and device housing. if you want to be absolutely sure, contact taoglas and we will test. choosing a taoglas antenna with a h igher peak gain than what is specified by
spe - 13 - 8 - 067 /c / ez page 3 of 11 the module manufacturer and enlisting our help will ensure you are getting the best performance possible without exceeding the peak gain limits. due to the potential for detuning in a tiny device environment, taoglas recommends that you contact us at our regional sales office for integration support and testing and optimization of the antenna in your device before going to production.
spe - 13 - 8 - 067 /c / ez page 4 of 11 2. s pecification electrical antenna fxp 75 standard 2400 - 2500 mhz operation frequency (mhz) 24 0 0 - 250 0 mhz polarization l inear impedance 50 ohms max vswr 2:1 max return loss (db) < - 10 peak gain (dbi) 2. 5 efficiency (%) 4 5 average gain (db) - 3. 4 radiation properties omni max input power 2w max * the fxp . 75 antenn a performance was measured on a 30x30 mm 2mm thick abs plastic ground plane. mechanical dimensions (mm) 5.9*4.1*0.24mm required space (mm) 5.9*4.1*0.24mm material polymer cable ?0.81mm coaxial cable connector ipex mhf1 environmental operation temperature - 40c to 85c storage temperature - 40c to 85 c relative humidity 4 0% to 95 % rohs compliant yes
spe - 13 - 8 - 067 /c / ez page 5 of 11 3. antenna characteristics 3.1 test set - up figure 1. impedance measurem ents (left side ) and peak gain , efficiency and radiation pattern measurements (right side ). 3.2 return loss figure 2. return loss of the fxp75 antenna from 22 00 mhz to 2700 mhz. y x z
spe - 13 - 8 - 067 /c / ez page 6 of 11 3.3 vswr figure 3 . vswr of the fxp75 antenna from 22 00 mhz to 2700 mhz. 3.4 efficiency figure 4 . efficiency of the fxp75 antenna from 2300 mhz to 2700 mhz.
spe - 13 - 8 - 067 /c / ez page 7 of 11 3.5 peak gain figure 5. peak gain of the fxp75 antenna from 2300 mhz to 2700 mhz. 3.6 average gain figure 6 . average gain of the fxp75 antenna from 2300 mhz to 2700 mhz.
spe - 13 - 8 - 067 /c / ez page 8 of 11 3.7 3d radiation patterns figure 7 . 3d radiation pattern at 2450 of the fxp75 antenna. 3.8 2d radiation patterns
spe - 13 - 8 - 067 /c / ez page 9 of 11 figure 8 . 2d radiation pattern
spe - 13 - 8 - 067 /c / ez page 10 of 11 4. antenna d rawing figure 9 . antenna drawing
spe - 13 - 8 - 067 /c / ez page 11 of 11 5. packag ing figure 10 . package of the fxp75 antenna.

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