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参数资料
| 型号： | 142-0761-801 |
| 厂商： | Emerson Network Power Connectivity Johnson |
| 文件页数： | 9/13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： | J797 |
High Frequency SMA End Launch Connectors
White Paper
Low VSWR and Insertion Loss over a Wide Bandwidth
An accurate characterization of packaged microwave circuits, such as broadband MMIC power
ampli?ers, requires coaxial to planar transitions with low return and insertion loss. In order to achieve
low loss, the transition design between the launch connector and the printed circuit board requires the
optimization of both mechanical and electrical features. The mechanical design must physically match
the electromagnetic ?eld distribution as close as possible in order to keep the discontinuity reactances
small, as shown in Figure 1. The electrical design must match the impedances and other interface
discontinuity reactances over the entire bandwidth.
Minimizing the discontinuity reactances is desired rather than just compensating for them.
Compensation can limit the usable frequency range of the connector, if the reactances are too large.
The connector design incorporates an internal matched impedance transition from a large input coaxial
connector interface, such as SMA, to a small coaxial output matched to the size of the PC board high
frequency substrate. The internal transition between the input and output consists of graduated
coaxial diametrical step sections, each optimized in size with inductive offsets to reduce the capacitive
discontinuities created by the change in coaxial diameters. As shown in Figure 1, using multiple coaxial
step sections to match the size of the circuit board reduces the overall effect of the discontinuities,
thereby increasing the usable frequency range of the launch connector.
The transition between the launch and the PC board is designed for attachment to grounded coplanar
waveguide (GCPW) transmission lines. The signal output pin of the launcher is optimized in both length
and diameter to match the corresponding GCPW line. The geometrical size of the signal side ground
leg pairs is optimized in height, length and center to center spacing to match the output pin and GCPW
line. The combination of optimal signal pin and ground leg design minimizes the attachment
discontinuity reactance.
Figure 1 - Simulated Electric Field Distributions within the Dielectric Regions at 18 GHz
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 |
|---|---|
| 142-0761-801 | 制造商:Emerson Connectivity Solutions XXX 功能描述:RF/COAXIAL SMA JACK R/A 50OHM SOLDER |
| 142-0761-801H12010 | 制造商:Johnson Components 功能描述:- Bulk |
| 142-0761-810 | 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, 10 MIL PIN |
| 142-0761-811 | 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: |
| 142-0761-820 | 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, 10 MIL PIN |
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