Datasheet > N15X12E470X

N15X12E470X

更新时间： 2024-11-05 23:53:07

品牌	Logo	应用领域
其他 - ETC		射频
页数	文件大小	规格书
16页	729K
描述
RF Coaxial Lightning & EMP Protection

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N15X12E470X 数据手册

1307062

RF Coaxial Lightning & EMP

Protection

•

In-line RF Coaxial Protection Against Lightning & EMP

Ideal Protection for Cellular Infrastructure Equipment

Available in ␭ր4 Stub Tuner or Gas Discharge Tube

Formats

•

Maintains Protection after Initial Strike or Pulse

M/A-COM offers a complete series of RF Coaxial Lightning &

EMP Protection Devices for use in cellular infrastructure appli-

cations. EMP (electro-magnetic pulse) occurs primarily as a

result of direct lightning strikes to infrastructure equipment

which can produce fast rising electric fields within micro

seconds. These electric fields induce high voltage pulses

through unprotected antennas and coaxial transmission cables

which can ultimately lead directly to the primary communica-

tion equipment. The EMP threat, generated from unpredictable

lightning strikes is a serious concern for cellular operators

around the world. Damage from a lightning strike can result in

costly repair of equipment as well as significant loss of airtime

service to subscribers.

␭/4 Stub Tuners

l/4 stub tuners are three port coaxial devices. The third port,

extending from the main electrical path, serves as a terminated

short circuit element at a predetermined distance from the RF

transmission path. This distance is designed to be exactly one

quarter wavelength at the desired centering frequency (Fo). l/4

stub tuners offer very low VSWR and feature very high attenu-

ation of incoming pulses but must be applied across relatively

narrow bandwidths (± 70 MHz). M/A-COM offers standard

designs for the most popular cellular frequency bands to

facilitate usage without the need for a custom design. Stub

tuners offer the greatest protection for sensitive electronic

components as they have neither the sparkover or residual

voltage characteristics of GDT devices. Stub tuners are

extremely reliable and maintenance free since they incorpor-

ate no active components. Standard stub tuner designs exist

for GSM, PCS 1900 and DCS 1800 frequencies with a wide

variety of connector interfaces such as Type N and 7-16

available. Cable assemblies, including low loss cable options,

are also available to provide complete in-line solutions for base

station design.

M/A-COM RF coaxial lightning protection (LP) devices have

been designed for use in commonly deployed cellular infra-

structure including GSM, NAMPS, PCS 1900 and DCS 1800

operating formats. The use of coaxial lightning protection has

two primary benefits for cellular applications. First, RF coaxial

lightning protection can easily be inserted into existing infra-

structure architecture either as a cable assembly or as an

in-line adapter. This facilitates cell site design and retrofit

capabilities. Secondly, the RF coaxial protection has been

designed to facilitate and not degrade RF performance during

normal operation of the system.

Surge Protectors

These devices incorporate internal gas discharge tube (GDT)

technology to provide a low impedance path to discharge the

EMP to ground. The GDT is hermetically sealed with an inert

gas which is not radioactive and requires no special handling.

GDT devices are broadband due to their inherently small

capacitance and cover frequencies up to 2.5 GHz. Once a

GDT device has been activated with an impulse and the

voltage level dissipated, the device becomes inactive and will

require subsequent maintenance or replacement. Surge

protectors are available in convenient bulkhead mounting

configurations with a wide variety of standard interface choices

including Type N, 7-16 and SMA.

Call your local M/A-COM sales office or global Applications

Engineering group for more information on our RF coaxial

lightning protection. M/A-COM is an ISO-9001 globally

certified manufacturer.

V5.00

M/A-COM Division of AMP Incorporated ■ North America: Tel. (800) 366-2266, Fax (800) 618-8883 ■ Asia/Pacific: Tel. +85 2 2111 8088, Fax +85 2 2111 8087

■ Europe: Tel. +44 (1344) 869 595, Fax +44 (1344) 300 020

www.macom.com

AMP and Connecting at a Higher Level are trademarks.

Specifications subject to change without notice.

12 3 4 5 6 7...16

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