{"product_id":"antenna-spring","title":"Antenna - Spring","description":"\u003ch2\u003e865–868 MHz Spring Antenna for Compact RF Designs\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eAntenna - Spring\u003c\/strong\u003e is a compact helical antenna for wireless circuits operating in the \u003cstrong\u003e865–868 MHz frequency range\u003c\/strong\u003e. It uses a coiled conducting wire and a direct-solder connection, making it an option for compatible PCB designs where space for an antenna is limited. The supplier specifies \u003cstrong\u003e50 Ω impedance\u003c\/strong\u003e and approximately \u003cstrong\u003e1.5 dBi gain\u003c\/strong\u003e, with gain dependent on the PCB ground plane.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact helical design:\u003c\/strong\u003e A small coiled form for integration into compatible wireless hardware.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect-solder mounting:\u003c\/strong\u003e Connects to the board’s antenna feed without a separate plug-in RF connector.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e865–868 MHz operation:\u003c\/strong\u003e Select it for RF designs that match the specified operating band.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e50 Ω impedance:\u003c\/strong\u003e Intended for a compatible RF interface and matching network.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eAntenna type\u003c\/th\u003e\n\u003ctd\u003eSpring \/ helical antenna\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eFrequency range\u003c\/th\u003e\n\u003ctd\u003e865–868 MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eGain\u003c\/th\u003e\n\u003ctd\u003eApproximately 1.5 dBi; depends on PCB ground plane\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eImpedance\u003c\/th\u003e\n\u003ctd\u003e50 Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eVSWR\u003c\/th\u003e\n\u003ctd\u003eLess than 1.5, as specified by the supplier\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePolarization\u003c\/th\u003e\n\u003ctd\u003eVertical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePower handling\u003c\/th\u003e\n\u003ctd\u003e10 W, supplier-rated antenna capability\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eConnection\u003c\/th\u003e\n\u003ctd\u003eDirect solder\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eOperating temperature\u003c\/th\u003e\n\u003ctd\u003e−20°C to +60°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eHumidity\u003c\/th\u003e\n\u003ctd\u003e5–95%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eListed length\u003c\/th\u003e\n\u003ctd\u003e11 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eListed diameter\u003c\/th\u003e\n\u003ctd\u003e5.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eListed weight\u003c\/th\u003e\n\u003ctd\u003e0.8 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch3\u003eApplications and Integration\u003c\/h3\u003e\n\u003cp\u003eConsider this antenna for compatible 865–868 MHz wireless sensor nodes, telemetry devices, RF prototypes and embedded communication projects. Match the operating frequency, RF interface and mounting requirements to your circuit before selection.\u003c\/p\u003e\n\u003cp\u003eFollow the radio module’s antenna-layout guidance and test performance in the finished enclosure. PCB ground plane, nearby components, mounting and enclosure materials can affect antenna tuning and range. The listed 10 W rating describes antenna power handling, not a required operating power or a permitted transmitter setting.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eWhat frequency does this spring antenna support?\u003c\/h4\u003e\n\u003cp\u003eThe supplier specifies 865–868 MHz. It is not listed as a 433 MHz, 915 MHz or 2.4 GHz antenna.\u003c\/p\u003e\n\u003ch4\u003eCan I use it with a LoRa module?\u003c\/h4\u003e\n\u003cp\u003eIt may suit a LoRa-based design operating within 865–868 MHz, provided the module’s RF interface, antenna matching and board layout are compatible. Compatibility should be checked for the specific module.\u003c\/p\u003e\n\u003ch4\u003eDoes it have an SMA or U.FL connector?\u003c\/h4\u003e\n\u003cp\u003eNo. The specified connection is direct solder to a suitable antenna feed on the PCB.\u003c\/p\u003e\n\u003ch4\u003eWhat communication range will it provide?\u003c\/h4\u003e\n\u003cp\u003eNo fixed range is specified. Range depends on the radio, installation, PCB ground plane, environment and antenna tuning. The supplier’s approximate 1.5 dBi gain also depends on the ground plane.\u003c\/p\u003e","brand":"Anu Electronics","offers":[{"title":"Default Title","offer_id":48001840283825,"sku":null,"price":11.8,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0634\/3606\/2897\/files\/antenna-spring-865-868mhz.png?v=1793285741","url":"https:\/\/anuelectronics.com\/products\/antenna-spring","provider":"Anu Electronics","version":"1.0","type":"link"}