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AN9864.1

PRISM® is a registered trademark of Intersil Corporation. PRISM logo is a trademark of Intersil Corporation.

Microsoft® Windows® and Windows NT® are registered trademarks of Microsoft Corporation. LINUX® is a registered trademark of Linus Torvalds.

HWB3163-EVAL PRISM II 11Mbps PCMCIA

Wireless LAN Evaluation Kit User’s Guide

Introduction

This kit allows evaluation of the Intersil

PRISM® II Direct Sequence chip set

design in a Wireless Local Area

Network (WLAN) PCMCIA Card

implementation.

Software drivers are included allowing data to be transmitted

between cards at 1, 2, 5.5 and 11Mbps transfer rates, with a

diagnostic program to display the real data throughput from

system to system.

Included in the kit are PRISM II chip set data sheets with

application notes describing the implementation of a

wireless networking card using the chip set.

Contents of Your Evaluation Kit

Your PC Card Wireless LAN Evaluation Kit contains the

following items:

Should you discover that your PC Card Wireless LAN

Evaluation Kit is incomplete, please contact Intersil

Corporation.

Overview of IEEE 802.11

The IEEE 802.11 speciﬁcation is a standard for wireless

connectivity for ﬁxed, portable, and moving stations within a

local area.

The IEEE 802.11 standard describes the services required

by a compliant device to operate within an “ad hoc” or

“infrastructure” network, as well as dealing with the issues

related to mobility within those networks. Spread spectrum

techniques are used to tolerate mobility and multipath

effects. They are also a requirement for compliance with

FCC, ETSI and those of other regulatory authorities when

operating within the Industrial, Scientiﬁc, and Medical (ISM)

frequency band.

An ad hoc communications network is created quickly and

informally for a temporary time period. An infrastructure

network usually requires more planning so that wireless

stations can communicate over longer distances through

access points, and may also communicate with existing

wired LANs using portals.

The IEEE 802.11 standard describes Media Access Control

(MAC) procedures. The principal method of communication

is the Carrier Sense Multiple Access with Collision

Avoidance (CSMA-CA) protocol. Using this protocol, each

station senses the communications medium (RF channel),

and does not transmit until the channel is clear. This avoids

collisions and minimizes the retransmission of subsequent

packets.

The standard also supports the operation of a station within

a wireless LAN that may coexist with several overlapping

wireless LANs. To accomplish this, a scheme of

channelization and spread spectrum techniques is used.

Direct Sequence (DSSS) and Frequency Hopping (FHSS)

spread spectrum techniques are supported by the standard

and both operate in the 2.4 to 2.4835GHz frequency band

(the unlicensed ISM band). An infrared technique is also

supported for indoor applications. The standard supports a

1Mbps and 2Mbps data rate for both DSSS and FHSS and

has recently introduced a high data rate standard supporting

5.5Mbps and 11Mbps DSSS using Complementary Code

Keying (CCK) modulation.

The standard has also specified the requirements and services

that enable private and secure communications to occur.

Wireless LAN Conﬁgurations

For ease of use in evaluating these cards, an ad hoc

network for peer to peer communications can be created.

An ad hoc network is usually created for a specific purpose

(such as file transfer or accessing a database). Ad hoc

networks simplify the process of creating and dissolving

networks for nontechnical users of the network facilities.

Two cards form an IEEE 802.11 Independent Basic Service

Set (IBSS), the simplest ad hoc network. The cards

communicate with each other directly and must remain

within radio range. When both cards are on, they

immediately “see” each other and the ad hoc network is

formed without user intervention.

To use the cards in an infrastructure BSS (also called an

Extended Service Set) where the two cards may not be in direct

radio contact, access points are needed. The association

between a card (station) and an infrastructure BSS - where

communication occurs only between a station and an access

point and not between stations directly is dynamic.

QUANTITY DESCRIPTION

2 PRISM II Wireless LAN PC Cards

1 HWB3163 Wireless LAN Evaluation Kit User’s

Guide, AN9864

1 PRISM II Chip Set Data Sheets

1 PRISM II Application Notes

1 Microsoft® Windows® 95/98/NT/CE/2000, LINUX®

Driver

1 PRISM® Test Utilities (PTU) Software

1 Features/Benefits Card

1 Product Registration Form

1 Notification Card

Application Note August 2000

Author: Richard L. Abrahams

1 2 3 4 5 6 ... 10 11

Inhaltsverzeichnis

Seite 1 - Introduction

Seite 2 - Installation

10Operational CharacteristicsSee the HWB3163-EVAL data sheet, Intersil File #4794, formore detailed speciﬁcations.ReferencesFor Intersil documents ava

Seite 3 - PC Card Evaluation

11All Intersil semiconductor products are manufactured, assembled and tested under ISO9000 quality systems certiﬁcation.Intersil semiconductor product

Seite 4

2The IEEE 802.11 protocols are implemented in the ﬁrmwareso that ﬁle transfers or database access can beginimmediately.Direct Sequence Spread Spectrum

Seite 5 - Test Point Diagrams

3Hardware InstallationPC Card EvaluationThis chapter describes several software programs suppliedwith the kit. It also details some diagnostic test po

Seite 6

4FIGURE 1. WIRELESS LAN PC CARD BLOCK DIAGRAM676666611HFA3861B BBPAGCCTLRAKETXALCANDDEMODRFDACRFADCIFDACI ADCQ ADCTXDACTXADCI DACQ DACMODI/OANDFILTERI

Seite 7 - Explanation of Test Points

5Test Point DiagramsFIGURE 2. WIRELESS LAN PC CARD TEST POINTS (TOP VIEW)TEST POINT K- RX I+ SIGNALTEST POINT L - RX Q+ SIGNALTEST POINT K1 - RX I- SI

Seite 8

6FIGURE 3. WIRELESS LAN PC CARD TEST POINTS (BOTTOM VIEW)Test Point Diagrams (Continued)INSTALL FOR RF CONNECTORTEST POINT BTEST POINT ATEST POINT D

Seite 9

7Explanation of Test PointsAll measurements were taken using the “ContinuousTransmit” or “Continuous Receive” features of the PTUdiagnostic software.

Seite 10 - Application Note 9864

8Test Point ERF Transmit Signal:The optional SMA connector can be used to hook up aSpectrum Analyzer for RF evaluation. Note that L4 (1.5nH)must be re

Seite 11 - Sales Ofﬁce Headquarters

9Test Point JIF Receive Signal:The intermediate frequency (IF) receive signal is the down-converted receive signal prior to the SAW bandpass ﬁlter.The

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