Circuit
Design provides narrow band, low power radio modules for short-range applications
in the license free bands |
Among the various uses of low power radio in
the marketplace, applications using Circuit Design’s narrow band radio modules are
very limited.
This page helps you make the right selection. Please go through the following guide and
make sure that Circuit Design’s radio modules fit your application both in
specification and cost. |
|
If you are looking for wide band high-speed
products
Circuit Design is not the right choice |
| The latest developments in low
power radio devices tend to be for high data speed, wide band and short range. Most
applications are high volume, consumer-market oriented. Bluetooth, Home RF, WALAN are
typical technology standards for these applications. RF ICs and radio modules
incorporating these standard RF ICs dominate the markets of their respective categories.
Their typical features are summarized in the following table. If you need products in
these categories, Circuit Design is not the choice. |
Wide band high speed products |
| High data rate |
64 kbps - 11 Mbps |
| Frequency bands |
400 MHz, 800 MHz, 900 MHz,
2.4 GHz, 5 GHz |
| Low receiver sensitivity |
Low sensitivity: -80 dbm to
-100 dBm |
| Short range |
10-100 m |
| Consumer applications |
Telecommunication, PC
ancillary, home electronic appliances, game etc. |
| Large volume application |
100,000, 1 mil. or
more |
| Low cost |
Single chip synthesized
transceiver price is around US$3 - 10 |
| High current consumption |
50 mA (bluetooth) - 300 mA
(802.11) |
| Wide band products suffer
interference easily due to their wide reception. |
|
If you
are looking for narrow band, low speed products
Circuit Design is the right choice. |
The scope of Circuit Design’s products
is different from wide band, high-speed products.
Narrow band, low speed, long-range, battery powered portable applications is the field
suited to Circuit Design’s products. The frequency range handled by Circuit Design is
from the 400 MHz to 900 MHz band. |
| Narrow band, low speed products |
| Low data
rate |
Max. 9600 bps,
typically 4800 bps |
| Frequency bands |
400 MHz, 800
MHz, 900 MHz |
| Narrow band |
12.5 KHz, 25.0
KHz channel steps |
| High receiver
sensitivity |
Higher
sensitivity: -120 dBm (CDP-RX-02N) |
| Long range |
300 m - 1,000
m |
| Industrial
applications |
Crane,
construction machine control etc. |
| Low volume |
Typical order
quantity:100 - 3,000 for OEM, 10 - 20 for easy system integration |
| High cost |
Price example:
Synthesized transceiver: Around EUR 55 for 1,000.
Low-end single channel transmitter: Around EUR 11 for 10,000. |
| Low current
consumption |
10 mA – 50
mA |
|
| Both narrow and clean spectrum emission and
good receiver selectivity is required to achieve reliable communication in areas with
heavy radio noise. With the technology available now, it is only achievable in a discrete
configuration with high stability crystals and narrow filtering devices (SAW, crystal and
ceramic filters). This is the orientation of Circuit Design's products. |
|
