User's Manual
Table Of Contents
- General Description
- Features
- Evaluation Kit Applications
- Revision Table
- Table of Contents
- List of Figures
- List of Tables
- Overview
- Installation and Setup
- Configuring Evaluation Kit Hardware
- Evaluation Kit Hardware Description
- PHY Evaluation Using the Wireless Developer Kit
- Summary List of Test Hardware and Software Required
- Equipment Handling
- Guidelines for Running Tests
- Transmit Spectral Mask Compliance Test
- Total Average Transmit Power Test
- Peak Envelope Power Test
- Receiver Sensitivity and Scaled Ranged Versus Throughput Tes
- Receiver Immunity Test
- Minimum Antenna Separation Test
- Penetration Test
- Video Transmission and Reception
- Operating Conditions and Characteristics
- Support
- FCC Compliance Statement
- License Agreement
- Warranty Disclaimer
- Glossary
- References
- Appendix A – Sources for Leasing of Test Equipment
Rev 1.34, June 2, 2004
Copyright © 2001-2004 Motorola, Inc. All rights reserved. Page 14 of 44
The configuration memory, an Altera EPC16, can be reloaded using the JTAG connector
internal to the enclosure. Directions for doing so are provided in section 3.1.
In future versions of UWB transceivers the MC270141 will be replaced by a much smaller
custom ASIC, or both the MAC and Baseband chips will be consolidated into a single chip.
An SDK is typically supplied with the WDK to permit configuration, control and statistics
reporting. Sample applications that use the 802.15.3 API are included with the SDK.
The MAC subsystem implements a 1394 Firewire interface that is exposed on the outside of the
enclosure as two 4-pin connectors. A single 1394 chipset is used to implement this external
interface. Either PCs or consumer electronics devices can be connected to the 1394 interface
on the UWB transceiver.
A single +5 VDC supply is used to power each UWB transceiver. An on-board DC-to-DC
converter generates supply voltages from this input.
4.2. PHY Subsystem Overview
The physical layer is accomplished using two VLSI devices developed by XtremeSpectrum, the
XSI123 Base Band Controller and the XSI113 RF Transceiver, plus a filter.
When receiving, the Base Band Controller provides analog-to-digital conversion of the
demodulated signals. It converts the data and synchronization signals from the RF Transceiver
to time correction values for each of the fingers. These time correction values are fed back to
the RF Transceiver to cause the receiver to remain locked to the incoming data stream. The
Base Band Controller also contains circuitry that implements channel equalization and FEC
processing, and framing.
On transmit the Base Band Controller provides one-bit-wide transmitted data to the RF-
Transceiver. This data is then encoded by the RF Transceiver before being sent to one of the
antennas.
The RF Transceiver provides amplification, modulation, demodulation, and generation of a
synchronized clock.. The XSI113 RF Transceiver connects to the antennas via a bandpass
filter. The characteristics of the filter along with the waveform generated by the RF Transceiver
guarantee compliance with the FCC emission limits, as long as the supplied antennas are used.
The characteristic impedance of each antenna connection is 50 Ω.
4.3. Antenna
Each antenna is a printed circuit board. The antenna connects to the transceiver housing via
semi-flexible coaxial cable. The frequency response function for this antenna as measured in an
anechoic chamber is supplied on the distribution CDROM that accompanies each Wireless
Evaluation Kit. The data graphed in Figure 4 is representative of the antenna’s response but
should not be used for precise calculations.