R&D engineers need to measure RF components to verify their simulation models and their actual hardware prototypes. For component production a manufacturer must measure the performance of their products so they can provide accurate specifications. This is essential so prospective customers will know how a particular component will behave in their application.

The devices that can be tested by Transcom network analyzer include both passive and active devices. Network analyzers can measure both linear and nonlinear behavior of devices. Some of the devices which are being tested by Transcom's network analyzer include:

Passive devices. Duplexers, diplexers, filters, couplers, splitters, combiners, isolators, circulators, attenuators, adaptors, loads, cables, transmission lines, antennas, multiplexers, among others.

Active devices. RFICs, transceivers, tuners, convertors, amplifiers, modulators and oscillators, and the like.

Basic measurements that are performed by network analyzer are reflection & transmission parameters and S-parameters. Reflection parameters like VSWR and return loss and transmission parameters like insertion loss and attenuation can be measure with a log magnitude and VSWR format. Engineers often want to know the impedance of the DUT. Transcom's network analyzer can display the smith chart, plot measured data on it, and provide adjustable markers that show the calculated impedance at the marked point in a several marker formats.

One can analyze phase variation with frequency, magnitude variation with frequency, deviation from linear phase and group delay for a DUT and characterize unknown devices using S-parameters S11 – Forward reflection coefficient (Input Match), S12 – Reverse transmission coefficient (Isolation), S21 – Forward transmission coefficient (Gain or Loss), and S22 – Reverse reflection coefficient (Output Match).

Transcom Instruments Co. Ltd. offers a variety of vector network analyzers:

T4 USB VNA. It offers wide dynamic range, low noise level, high resolution scanning with laboratory, and research grade performance. T4 covers frequency range of 1 MHz to 4 GHz with 2-port and 2-pass that competitive with most of the bench-top VNAs on the market. T4 is suitable for laboratory, manufacturing, and many other safety testing environments.

T5000 series bench-top vector network analyzer. The analyzer offers the high RF performance, wide frequency range, and versatile functions. The T5000 series is the economic solution for manufacturing and R&D engineers evaluating RF components and circuits for frequency range up to 8 GHz.

T5840A. It is a built-in multiport test set new generation of multiport matrix vector network analyzer developed by Transcom. It can be widely applied to the research, development, and test of RF devices in the fields of communication, medical care, scientific research, and electronics. The instrument has made a breakthrough in conventional multiport test scheme of 2/4 port VNA+matrix switch. It can carry out parallel test on DUT with 10 ports under standalone operation, thereby greatly improving test efficiency and reducing test cost and time.

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