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参数资料
| 型号： | 142-0761-821 |
| 厂商： | Emerson Network Power Connectivity Johnson |
| 文件页数： | 10/13页 |
| 文件大小： | 0K |
| 描述： | CONN JACK SMA 50 OHMS PC MOUNT |
| 产品培训模块： | SMA HF End Launch |
| 产品目录绘图： | 142-0761-801, 821 |
| 特色产品： | High Frequency SMA End Launch Connectors |
| 标准包装： | 25 |
| 系列： | SMA |
| 连接器类型： | SMA |
| 连接器类型： | 插孔，母插口 |
| 触点终端： | 焊接 |
| 阻抗： | 50 欧姆 |
| 安装类型： | 板边缘，末端装入式 |
| 紧固型： | 有螺纹 |
| 频率 - 最大： | 26.5GHz |
| 包装： | 散装 |
| 产品目录页面： | 465 (CN2011-ZH PDF) |
| 其它名称： | J803 |
High Frequency SMA End Launch Connectors
White Paper
Easily connected to GPCW transmission lines with
reproducible results
A coplanar waveguide transmission line is formed by a planar conductor separated by a pair of ground
planes, all on the same plane, atop of a high frequency dielectric medium. A variant is formed when a
ground plane is provided on the opposite side of the dielectric which is called grounded coplanar
waveguide (GCPW). Although GCPW is the preferred transmission line structure on the circuit board for
this connector, other lines such as microstrip can be used with good results.
At microwave frequencies, the coplanar waveguide can be equal to or better than the microstrip when
loss and dispersion are used as a basis for comparison. Minimum loss for a given coplanar waveguide
occurs at about 60 Ohms whereas the minimum loss for microstrip occurs at about 25 Ohms. A full wave
analysis which includes space wave and surface wave radiation shows that coplanar waveguide
discontinuities radiate much less energy than microstrip discontinuities.
The GCPW transmission line is fabricated on a high frequency circuit board substrate. Dielectric constant
control, low dissipation factor and controlled thicknesses differentiate these high frequency circuit board
materials from those typically used in the high volume printed circuit board world like FR4 and BT/epoxy.
For higher frequencies, dielectric loss becomes an important contributor to the total loss. This is
important because, as the frequency increases, the thickness of the material must decrease in order to
avoid generating transverse modes on the transmission lines.
The high frequency material’s low loss performance extends the useful range of these materials well
above 20 GHz. However, very thin dielectric layers as small as .008” are not mechanically stable enough
to support the connector and associated circuitry. Therefore, hybrid circuit board constructions
consisting of high frequency laminates and epoxy/glass substrates have become an increasingly utilized
alternative to lower overall circuit board costs. The DC, control and digital signal paths are designed onto
the lower cost epoxy/glass FR4 layer and the microwave signals are carried on the high frequency top
layer as shown in Figures 1A and 1B.
Figure 1A
Figure 1B
Typical HF/Digital Multilayer Hybrid Construction (GCPW Figure 1A, microstrip Figure 1B)
10
Emerson Network Power ? Tel: 800.247.8256 ? Fax 507.833.6287 ? www.EmersonNetworkPower.com/connectivity
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 142-0761-830 | 制造商:EMERSON-NETWORKPOWER 制造商全称:Emerson Network Power 功能描述:HIGH FREQ END LAUNCH SMA JACK ASSEMBLY, PC MOUNT, 15 MIL PIN |
| 142-0761-831 | 功能描述:RF 连接器 PCB JACK 50 OHM GOLD SQUARE BODY RoHS:否 制造商:Bomar Interconnect 产品:Connectors 射频系列:BNC 型式:Jack (Female) 极性: 触点电镀:Gold 阻抗: 端接类型:Solder 主体类型:Straight Bulkhead 电缆类型: |
| 142-0761-840 | 制造商:EMERSON-NETWORKPOWER 制造商全称:Emerson Network Power 功能描述:HIGH FREQ END LAUNCH SMA JACK ASSEMBLY, PC MOUNT, 15 MIL PIN |
| 142-0761-841 | 功能描述:RF 连接器 PCB JACK GOLD 50 OHM .062" EDGE MOUNT RND RoHS:否 制造商:Bomar Interconnect 产品:Connectors 射频系列:BNC 型式:Jack (Female) 极性: 触点电镀:Gold 阻抗: 端接类型:Solder 主体类型:Straight Bulkhead 电缆类型: |
| 142-0761-841 | 制造商:Emerson Connectivity Solutions XXX 功能描述:RF/COAXIAL SMA JACK STR 50 OHM SOLDE 制造商:Johnson Components 功能描述:RF/COAXIAL, SMA JACK, STR, 50 OHM, SOLDE |
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