The Method to Determine the Polarity of MMCX Connector

时间： 2023-11-15 来源：Kinghelm News

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The MMCX interface, also known as the Micro-Miniature Coaxial interface, is a type of micro radio frequency connector widely used in wireless communication, GPS, PCMCIA cards, wireless LANs, and other fields. When determining the polarity of the MMCX interface, we need to analyze it from two aspects: physical structure and electrical characteristics.

Physical Structure of MMCX Interface

The MMCX interface consists of a plug and a socket. The plug includes a central contact (inner pin) and an outer shell, while the socket includes a central socket (inner hole) and an outer shell. In the MMCX interface, the central contact or socket is usually defined as the signal line, which we commonly refer to as the "positive pole"; the outer shell is usually defined as the ground wire, i.e., the "negative pole".

Electrical Characteristics of MMCX Interface

In terms of electrical connection, the polarity of the MMCX interface can also be determined by measuring the voltage. Generally, the voltage of the positive pole is higher than that of the negative pole. Therefore, the polarity of the MMCX interface can be determined with a voltmeter.

However, it's important to note that the polarity of the MMCX interface, whether viewed from its physical structure or electrical characteristics, is not as distinct as that of a DC power source. This is because the MMCX interface transmits radio frequency signals, which operate differently from DC power sources. Therefore, in practical applications, the physical structure of the MMCX interface is often referenced to determine "polarity".

In summary, the polarity determination of the MMCX interface mainly depends on its physical structure, with the central contact or socket serving as the "positive pole" and the outer shell as the "negative pole". In actual applications, users need to make detailed judgments and operations based on the specific device's interface definition and user manual to ensure the correct connection and normal operation of the device.

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本文由上山打老虎转载自Kinghelm News，原文标题为:The Method to Determine The Polarity of MMCX Connector，本站所有转载文章系出于传递更多信息之目的，且明确注明来源，不希望被转载的媒体或个人可与我们联系，我们将立即进行删除处理。

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型号- 6312123-1,1059651-1,5415417-1,1055018,887098,2098 5516 02,1059857,1057679,1057676,225014,1064552-1,2006 7941 00,1055445-1,1056452-1,B67N25T999X,1312569-1,1061015-1,1-225667-6,1057374-1,1-5227086-0,4506 7985 02,1051052-1,5225886,1362765-1,1060871-1,3182 2243 00,1058666-1,1061002-1,6363526-1,1055477,1055476,1060869,1055475,2231 7388 36,1055474,5415252-4,1060871,5415252-3,1057165-1,5415252-2,6408036-1,2052 1658 02,5415252-1,1060872,1060875,13126-1,1050602-1,2007 7188 02,1311701-1,B67H66T022X,4503 7985 00,1056728-1,127893-98,1055469,413985,5887000,1363301-2,1363301-1,4-5227079-3,5414352-1,1060883,5221506-2,5221506-3,5221506-5,225669-2,4563 0000 00,9960 2100 24,413990,225669-1,1311122-1,3051 1200 10,2004 7188 02,1059901-1,7081 5009 00,225349-9,5864 5003 10,1251802-1,5887078,1061738,5413933,1057635,1061739,1055454,1057387-1,9960 1200 24,1055451,1057631,1055450,4558 5009 02,1061742,6274291,1311701,1051644-1,1-221185-8,1061744,1311700,5413959-5,5413959-6,1311703,5413959-1,D75A02B001X,5413959-3,5413959-4,5225395-3,5225395-2,5225395-1,1408051-6,1055448,1055447,1408051-4,1408051-5,1055449,5221221-2,1055444,1051085,1055443,1055446,5221221-1,5864 5003 09,1055445,1055440,5221221-7,5225395-8,1331959-1,2382 2240 00,1-221185-0,5225395-7,413476-2,1055442,5221221-5,5225395-6,1055441,227223,1061752,201098,1061753,1061750,1061751,1055018-1,1051081,1061757,201097,228553,1274684,1064543-1,1274689,1274688,4522 7941 02,5415381-1,6-1393665-1,5221123-2,1059718-1,1055439,414394-1,330620,59980,887046-1,1311638-1,1408393,1061758,59981,5413959,1274694,227839-1,2006 7985 00,220221-2,1064530-1,9960 4305 04,227661-1,9960 4305 02,1053222-1,1056702-1,9960 4305 08,9960 4305 07,1056752,1056750,9960 4305 01,1056751,1055420,5332225-3,6408027-1,D75A02B004X,1059540-1,222092-1,312253-2,329631,5887046,312253-1,329632,N15X14E010X,2001 7188 02,222092-3,1393670,1408336,B67H64T062X,1408333,2-5330062-1,1059402-1,415779-1,1408339,1393672,1408338,1408337,1057343-1,1060995-1,1052544-1,1408332,1057279,1059456,225554-6,5332225-6,5332225-5,1057277,1059453,1057275,1059452,5415025-1,1059451,5415025-2,1055694-1,1055441-1,1060960-1,3180 2302 00,225094,1050740-1,225093,2399 5012 54,5415232,1393681,1408347,1393680,1408346,5415226,1408349,1393682,1408348,5227726-2,5227726-3,1058117,5227726-1,1330401,1408343,1408342,221951,1408341,1408340,415187-1,225088,2098 5210 02,5226990-1,5226990-3,415406-2,B67A64T022X,5226990-6,1055837-1,1057463-1,1055476-1,1058056-1,5414373,221988,1312079-1,221509,1059731-1,1052522-1,221500,1-413589-1,1330401-5,2052 1201 02,1330401-6,2052 1201 00,B67H66T062X,1330401-4,3080 2240 00,1-413589-6,1059886-1,1056724-1,5415252,5415255,5415248,D75R02B999X,6057159-1,1393662,5413933-1,1050611,1051942,5887089,1393665,1055065,1-413589-0,1393668,1058572,228979-6,228979-7,228979-5,4558 5119 02,1055454-1,5413506-1,5415242,5414394,2098 5209 02,1052072-1,414265-3,5064 5003 09,1059905-1,1050602,1059412,1059410,1059894,5225974-2,5225974-1,1329175-3,414363-4,414363-5,5225974-5,1051942-1,414363-8,1329175-2,1060811,1329175-1,5415276,2980 2240 00,1059408,1060813,1055047,1059889,414946-5,1059404,1059888,414946-6,1059887,414946-3,1059402,1059886,414363-3,1059884,414946-2,4503 7941 00,2-221128-7,415633-1,1059566-1,1083946-1,228596-2,228596-1,2-221128-1,3282 2223 00,2-221128-3,1311100-1,4757 1154 02,1408314,1408313,1408312,415085-1,5415189-1,1393696,228596-5,5-5227079-3,228596-4,1083946,228596-3,221540,221543,1057699,2098 5217 54,1057697,1059874,5221402,2052 1352 02,1362991,1362990,69710,5222165-2,221539,2032 5021 02,1059868,148385-1,3081 2241 00,1313883-1,3082 2243 00,5413879-2,5413879-1,228179,2318 0000 54,4552 1201 02,1061758-1,6059632-1,5-227079-3,2998 5030 02,B67H64T280X,1061753-1,5415633,5221981-2,5415632,1055833-1,5182 2240 00,1052422,5227169,5415634,1725637-1,5414305,415485-2,415485-3,415485-1,1274045-1,1312124-1,220241,59980-1,B67B44TA25X,2098 5282 02,619271,5227161,1064538-1,1408038-1,5414338-1,1052898,220221,4740 7388 00,221551,220220,220222,6274431-1,332057,220224,B67A64T280X,B67A64T062X,415232-7,415232-4,415232,1052646-1,5221336-4,5221336-3,5331178,221108,C65E06G022X,5413476,5331175,7081 2301 00,2902 7985 62,4580 2240 02,1059637-1,221586,1460052,222132-1,282938,1460055,5414160-5,332056,5225662-2,1311118-1,414396,2598 5207 54,5414311,5807 7985 09,5862 5004 10,222428,5414088-1,6329818,222506-1,1314422,2052 3500 02,1057676-1,1460060,6061035-1,222506-6,225661-2,5415248-1,225661-1,1055450-1,1274032-1,222506-5,5862 5004 09,5331182,1057116-1,5222420-1,1052076-1,5415248-7,619231,5414284-2,6274359-1,415276-2,2051 0000 02,603995-6,603995-5,D75X14B999X,619238,331178,603995-3,1056447-1,603995-2,603995-1,1-5225664-2,331182,51563,3684 2240 00,51565,415419-1,1363301,1061744-1,619220,225398-8,4581 2241 02,619224,5414337,619223,5414338,619228,619229,225398-6,619226,225398-7,225398-1,2598 5198 54,225398-3,5887078-1,331175,225363-1,1311127-1,2-221185-9,1052098-1,2082 2249 02,415672,619210,5414367,5415214,619213,5228435,619214,5415216,619211,5415218,221980-1,1060996-1,619215,5225

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SERIES,756-5112/030-100,750-662/000-004,756-5102/030-050,757-284/000-010,750-8217/600-000,247,757-284/000-005,248,249,753-649,753-648,753-647,753-646,750-630/000-013,756-9201/040-000,750-630/000-011,756-1250/1013-030,750-630/000-012,750-630/000-006,753-652,787-1014,756-1250/1013-020,750-630/000-004,753-650,750-630/000-005,753-655,787-1017,750-630/000-008,750-630/000-009,753-653,750-616/030-000,750-8212/040-010,756-9210/060-000,787-1012,787-1011,756-5302/030-050,750-457/025-000,750-630/000-002,750-630/000-001,756-1250/1013-010,787-1002,247-552/000-017,757-284/000-025,765-1501/100-000,706-7753/302-200,762 SERIES,751 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GPS有源天线在信号强度、抗干扰能力等方面相对无源天线具有一定的优势，更适合于对定位精度和信号质量要求较高的应用场景。然而，无源天线也因其简单的结构、低廉的成本和较小的体积，在一些特定的消费类电子产品中有着广泛的应用。在选择GPS天线时，需要根据具体的应用需求、使用环境以及成本等因素综合考虑，以确定哪种天线更适合您的设备。本文金航标来给大家分享GPS有源天线和无源天线的对比分析。

2024-12-05 - 技术探讨代理服务技术支持采购服务

金航标天线选型表

金航标提供汽车定位天线,陶瓷天线,北斗天线,胶棒天线,蓝牙天线,吸盘天线,GPS天线,PCB天线,WIFI蓝牙FPC天线,玻璃钢天线,WiFi天线,4G通讯天线,吸盘弹簧天线,定位天线,通讯天线,羊角天线,一字天线,WIFI胶棒天线选型：信号2.4-6G，阻抗（Ω）：50Ω，驻波比：≤1.5: 1/≦1.3/≤2.0/≤2.5等，最大功率（W）：3-50W，极化方式：垂直/线性/水平极化/右旋圆极化等。

选型表 - 金航标立即选型

金航标RJ45连接器选型表

金航标提供RJ45连接器选型：额定电压（V）：125 VAC RMS，额定电流：1.5A，LED：不带LED/带LED，类别：RJ插座，规格：弯插/直插/全包全塑等。

产品型号	品类	种类	LED	规格	颜色	额定电流	额定电压	使用寿命	接触电阻
KH-RJ45-56-8P8C-D-T	RJ45网络连接器	RJ45网络连接	带LED	带弹	黑色	1.5A	125 VAC RMS	至少750次循环	最大35mΩ

选型表 - 金航标立即选型

北斗GPS天线使用秘籍与性能大比拼：如何选对GPS北斗定位天线？

GPS北斗定位天线是一种专门用于接收GPS卫星信号与北斗卫星导航系统信号的关键装置。它通过特定的天线结构与设计，将卫星发射的微弱电磁波信号高效地捕捉并转换为可供卫星导航接收机处理的电信号，从而为各类定位、导航、授时应用提供基础数据支持。本文金航标来为大家介绍如何选对GPS北斗定位天线，希望对各位工程师朋友有所帮助。

2024-12-04 - 技术探讨代理服务技术支持采购服务