Female Open Male Open Full One-Port Calibration SMA-K Calibrator SMA - SMA Cal

MOQ： 1 pcs
Price： Negotiation
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Payment Terms	Western Union, L/C, T/T
Supply Ability	5000pcs Per Week
Packaging Details	Polybag and Carton
Name	SMA-K Calibrator
Connectors	SMA Connectors
Paintcoat Color	Black
Type	SMA to SMA
Application	Outdoor Communication
Cable Dia	2.2mm
Bend Radius	30mm
Core Material	PMMA
Brand Name	HICORPWELL
Model Number	SMA-K Calibrator
Certification	IEC 60794-2-10/11
Place of Origin	China

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Product Specification


Payment Terms	Western Union, L/C, T/T	Supply Ability	5000pcs Per Week
Packaging Details	Polybag and Carton	Name	SMA-K Calibrator
Connectors	SMA Connectors	Paintcoat Color	Black
Type	SMA to SMA	Application	Outdoor Communication
Cable Dia	2.2mm	Bend Radius	30mm
Core Material	PMMA	Brand Name	HICORPWELL
Model Number	SMA-K Calibrator	Certification	IEC 60794-2-10/11
Place of Origin	China
High Light	SMA to SMA SMA-K Calibrator

Female open Male open Full one-port Calibration SMA - SMA Cal Kit Testing SMA-K Calibrator

I. Description:

Product name:SMA-K Calibrator

Model	SMA-K Calibrator
frequency range	DC-6GHz
Dummy load	＜-32dB(Return Loss)
Material	Gold-plated brass
Connecting Interface	SMA
Torque value	0.9 N/m

The idea is to create correction data for the cheap SMA cal kit by measuring the cal standards after the VNA was calibrated with the Maury kit, and thereby transfer at least some of its precision to the cheap kit.

As with most cal kits, the use of correction data is absolutely necessary since the open and short have an offset length, and in this case probably also appreciable losses due to the PTFE dielectric. Moreover, the open is always appreciably non-ideal due to its fringing capacity.

Let's start with the measurements. First, the VNA was configured with adapters to have a male 3.5 mm connector at port 1, and a female 3.5 mm connector at port 2. Then a full one-port calibration was performed for each port, using my Maury cal kit.

After some sanity checks of the calibration, the S11 of the six SMA cal standards were measured from 300 kHz to 4 GHz. The results were stored as Touchstone (.s1p) files, each with 1001 data points. Here are plots of the results, directly from the analyzer:

Female open
Female short
Female match
Male open
Male short
Male match
The open and short standards are somewhat lossy, but this is easily addressed by the common error correction models. The match standards are are a bigger problem;surely they are not shoddy and are certainly adequate as a general purpose termination, but are far from what one would expect from a calibration standard.

The matches usually will set the limit on the accuracy of a cal kit even after correction with the coefficients method, since open and short are usually very precise after correction, but there is no general parametric model to adequately correct a match.

It is interesting to note that between 1 GHz and 2 GHz the return loss of the female match worsens by about 20 dB and remains below only −35 dB, while the male match is much better and remains well below −45 dB almost up to 4 GHz. This despite the fact that the female standards are rated to a much higher frequency!

Another quality feature of a cal kit is the relative phase response of open and short over frequency. The error correction algorithm applied by the VNA is most stable (i.e., the error terms determined during calibration are least sensitive to variations in the measured reflection factors of the cal standards) if the responses of the open, short and match are spaced as far apart as possible on the Smith chart at every frequency in the band of interest. This is the case if, on the Smith chart, open, short and match are located on a straight line at every frequency, with the match at the center.

In the extreme case, if open and short happen to rotate at very different rates around the outer edge of the Smith chart as frequency is increased, they will finally meet. At that frequency, they look alike (except perhaps for small differences in loss), and calibration fails. Thus the phase response of open and short should ideally be 180° apart. In the following two graphs the difference in the phase response of open and short (red trace) for the female kit as well as for the male kit is plotted over frequency. For the female kit, the phase difference remains below 17°, and for the male kit below 6° in magnitude up to 4 GHz. This is actually a very good result.

Company Details

Bronze Gleitlager

Bronze Sleeve Bushings

and

Graphite Plugged Bushings

from Quality China Factory

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Business Type:

Manufacturer,Importer,Exporter 
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Year Established:

2013 
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Total Annual:

3,000,000-5,000,000
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Employee Number:

160~166 
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Ecer Certification：

Verified Supplier 

Shenzhen Hicorpwell Technology co.,Ltd was founded in 2013 is located in Shenzhen , workshop area more than 3000 square meters . The company is at the forefront of Research &Development, Manufacturing, and Sales of a broad range of fiber optic and connectivity products, includi... Shenzhen Hicorpwell Technology co.,Ltd was founded in 2013 is located in Shenzhen , workshop area more than 3000 square meters . The company is at the forefront of Research &Development, Manufacturing, and Sales of a broad range of fiber optic and connectivity products, includi...

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Shenzhen Hicorpwell Technology Co., Ltd
Rm 604 Bldg 9th Yinxingyuan South Rd Nanshan District 518054 Shenzhen China
https://www.glassfiberopticcable.com/

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