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參數資料
| 型號： | VJ3505M011SXMSRA0 |
| 廠商： | Vishay Vitramon |
| 文件頁數： | 1/6頁 |
| 文件大小： | 149K |
| 描述： | ANTENNA 470-860MHZ UHF SMD |
| 產品培訓模塊： | UHF Chip Antenna |
| 產品目錄繪圖： | VJ3505 |
| 特色產品： | VJ 6040 and VJ 3505 Chip Antennas |
| 標準包裝： | 1 |
| 天線類型： | 芯片 |
| 頻帶數目： | 1 |
| 頻率： | 470MHz ~ 860MHz |
| 增益： | 1dBi |
| 端子： | 表面貼裝型 |
| 安裝類型： | 表面貼裝 |
| 高度（最大）： | 0.04"（1.2mm） |
| 包裝： | 標準包裝 |
| 產品目錄頁面： | 595 (CN2011-ZH PDF) |
| 其它名稱： | 720-1227-6 |
VJ 3505 UHF Chip Antenna for Mobile Devices
www.vishay.com
For technical questions, contact: mlcc@vishay.com
Document Number: 45158
20
Revision: 26-Aug-10
VJ 3505
Vishay Vitramon
The companys products are covered by one or more of the
following:
WO2008250262 (A1), US2008303720 (A1),
US2008305750 (A1), WO2008154173 (A1).
Other patents pending.
DESCRIPTION
The VJ 3505 multi-layer ceramic chip antenna is a small
form-factor, high-performance, chip-antenna designed for
TV reception in mobile devices in the UHF band. It allows
mobile TV device manufacturers to design high quality
products that do not bear the penalty of a large external
antenna. Utilizing Vishay's unique materials and
manufacturing technologies, this product complies with the
MBRAI standard while maintaining a small outline.
Focusing on consumer applications, the antenna is designed
to be assembled onto a PC board in the standard reflow
process.
Target customers of the VJ 3505 are mobile phone makers,
portable multimedia device makers, notebook OEMs and
ODMs, and accessory card OEMs and ODMs.
FEATURES
" Small outline (35 mm x 5 mm x 1.2 mm)
" Omni-directional, linear polarization
" Complies with MBRAI standard
" Complete UHF band coverage (470 MHz to 860 MHz) up
to 1.1 GHz
" Requires a tuning circuit and ground plane for optimal
performance
" Standard SMT assembly
" 50 ?unbalanced interface
" Operating temperature range (- 40 癈 to + 85 癈)
" Reference design and evaluation boards available upon
request
" Compliant to RoHS directive 2002/95/EC
APPLICATIONS
" Mobile UHF TV receivers including DVB-T, DVB-H,
ISDB-T, CMMB, ATSC, and MediaFLO devices
ANTENNA PERFORMANCE
Peak gain and efficiency
The antenna radiation characteristics are influenced by
several factors including ground plane dimensions and
impedance matching network.
The antenna parameters presented hereafter were
simulated according to the ground plane configuration
suggested by the VJ 3505 evaluation board.
Figure 1. shows simulated peak gain and radiation efficiency
over frequency throughout the UHF band, compared with the
MBRAI requirements.
Fig. 1 - Peak Gain and Efficiency vs. Frequency
VJ 3505 Simulated Antenna Parameters
- 12
- 10
- 8
- 6
- 4
- 2
0
2
Fr
n MHz
470 520 570 620 670 720 770 820 870
Radiation
Efficiency
MBRAI
Peak Gain
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