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參數(shù)資料
| 型號： | MICRF112 |
| 廠商： | Micrel Semiconductor,Inc. |
| 英文描述： | QwikRadio㈢ UHF ASK/FSK Transmitter |
| 中文描述： | QwikRadio系列㈢超高頻ASK / FSK發(fā)射器 |
| 文件頁數(shù)： | 15/20頁 |
| 文件大?。?/td> | 537K |
| 代理商： | MICRF112 |
Micrel, Inc.
MICRF112
March 2007
15
M9999-030107
(408) 944-0800
Output Matching Network
Part of the function of the output network is to attenuate
the second and third harmonics. When matching to a
transmit frequency, care must be taken not only to
optimize for maximum output power but to attenuate
unwanted harmonics.
Layout Issues
PCB Layout is of primary concern to achieve optimum
performance and consistent manufacturing results. Care
must used on orientation of components to ensure they
do not couple or decouple the RF signal. PCB trace
length should be short to minimize parasitic inductance,
(1 inch ~ 20nH). For example, depending on inductance
values, a 0.5 inch trace can change the inductance by as
much as 10%. To reduce parasitic inductance, the use of
wide traces and a ground plane under signal traces is
recommended. Vias with low value inductance should be
used for components requiring a connection-to-ground.
Antenna Layout
Directivity is affected by antenna trace layout. No ground
plane should be under the antenna trace. For consistent
performance, components should not be placed inside
the loop of the antenna. Gerbers for Figure 7, with a
suggested layout, can be obtained on the Micrel web site
at: http://www.micrel.com.
相關PDF資料 |
PDF描述 |
|---|---|
| MICRF112YMM10 | QwikRadio㈢ UHF ASK/FSK Transmitter |
| MICRF211 | 3V, QwikRadio㈢ 433.92 MHz Receiver |
| MICRF211AYQS | 3V, QwikRadio㈢ 433.92 MHz Receiver |
| MICRF213 | 1.8 V single UART, 20 Mbit/s (max.) with 128-byte FIFOs, infrared (IrDA), and XScale VLIO bus interface, SOT617-1 (HVQFN32), Tray Pack, Bakeable, Multiple |
| MICRF213AYQS | 1.8 V dual UART, 20 Mbit/s (max.) with 128-byte FIFOs, infrared (IrDA), and XScale VLIO bus interface, SOT912-1 (TFBGA36), Tray Pack, Bakeable, Multiple |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MICRF112_11 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:QwikRadio? UHF ASK/FSK Transmitter |
| MICRF112-315 EV | 制造商:Micrel Inc 功能描述:Evaluation board for MICRF112 |
| MICRF112-315-EV | 功能描述:EVAL BOARD FOR MICRF112 315MHZ 制造商:microchip technology 系列:QwikRadio? 零件狀態(tài):有效 類型:發(fā)射器 頻率:315MHz 配套使用產(chǎn)品/相關產(chǎn)品:MICRF112 所含物品:板 標準包裝:1 |
| MICRF112-433 EV | 功能描述:射頻開發(fā)工具 300 to 450MHz ASK/FSK +10dBm Transmitter Evaluation Board Tuned for 433MHz - Limit 2 per customer; marketing approval required for additional boards RoHS:否 制造商:Taiyo Yuden 產(chǎn)品:Wireless Modules 類型:Wireless Audio 工具用于評估:WYSAAVDX7 頻率: 工作電源電壓:3.4 V to 5.5 V |
| MICRF112-433EV | 制造商:Micrel 功能描述:Evaluation Board for MICRF112-433 |
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