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參數(shù)資料
| 型號(hào)： | CC2420 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | 2.4 GHz IEEE 802.15.4 / ZigBee-ready RF Transceiver |
| 中文描述： | 2.4 GHz IEEE 802.15.4標(biāo)準(zhǔn)/ ZigBee功能的RF收發(fā)器 |
| 文件頁(yè)數(shù)： | 59/87頁(yè) |
| 文件大小： | 1418K |
| 代理商： | CC2420 |
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SmartRF
CC2420
one quarter of the electrical wavelength
(
λ
/4). They are very easy to design and
can be implemented simply as a “piece of
wire” or even integrated into the PCB.
The length of the
λ
/4-monopole antenna is
given by:
L = 7125 / f
where f is in MHz, giving the length in cm.
An antenna for 2450 MHz should be 2.9
cm.
Non-resonant monopole antennas shorter
than
λ
/4 can also be used, but at the
expense of range. In size and cost critical
applications such an antenna may very
well be integrated into the PCB.
Enclosing the antenna in high dielectric
constant material reduces the overall size
of the antenna. Many vendors offer such
antennas intended for PCB mounting.
Helical antennas can be thought of as a
combination of a monopole and a loop
antenna. They are a good compromise in
size critical applications. Helical antennas
tend to be more difficult to optimize than
the simple monopole.
Loop antennas are easy to integrate into
the PCB, but are less effective due to
difficult impedance matching because of
their very low radiation resistance.
For low power applications the differential
antenna is recommended giving the best
range and because of its simplicity.
The antenna should be connected as
close as possible to the IC. If the antenna
is located away from the RF pins the
antenna should be matched to the feeding
transmission line (50
).
Chipcon AS
SmartRF
CC2420 Preliminary Datasheet (rev 1.2), 2004-06-09
Page 59 of 87
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| CC2420DBK | 2.4 GHz IEEE 802.15.4 / ZigBee-ready RF Transceiver |
| CC2420DK | LC2MOS 5 O RON SPST Switch; Package: PDIP; No of Pins: 16; Temperature Range: Industrial |
| CC2420SK | 2.4 GHz IEEE 802.15.4 / ZigBee-ready RF Transceiver |
| CC4V | SM WATCH CRYSTAL MIL TEMP |
| CC4V-T1 | SM WATCH CRYSTAL MIL TEMP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CC2420/T&R | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:2.4 GHz IEEE 802.15.4 / ZigBee-ready RF Transceiver |
| CC2420/TR | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:2.4 GHz IEEE 802.15.4 / ZigBee-ready RF Transceiver |
| CC2420DBK | 功能描述:Zigbee/802.15.4開發(fā)工具 CC2420 DEMO KIT 2 DEMO BOARDS RoHS:否 制造商:Silicon Labs 產(chǎn)品:Development Kits 工具用于評(píng)估:EM35x 頻率:2.4 GHz 接口類型:USB 工作電源電壓: |
| CC2420DK | 功能描述:Zigbee/802.15.4開發(fā)工具 CC2420 DEVELOPMENT KIT RoHS:否 制造商:Silicon Labs 產(chǎn)品:Development Kits 工具用于評(píng)估:EM35x 頻率:2.4 GHz 接口類型:USB 工作電源電壓: |
| CC2420EMK | 功能描述:Zigbee/802.15.4開發(fā)工具 CC2420 EVALUATION KT (2)PCBs & (2)ANTENNA RoHS:否 制造商:Silicon Labs 產(chǎn)品:Development Kits 工具用于評(píng)估:EM35x 頻率:2.4 GHz 接口類型:USB 工作電源電壓: |
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