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Tescom TC-5060 UHF TEM Cell

The TC-5060A/B/D UHF TEM Cell generates a consistent electro-magnetic field for testing small RF devices such as wireless pagers, GPS receivers, portable phones, etc. An external test signal applied through the input port of the TC-5060A/B generates a consistent and predictable TEM test field inside the cell. The radiation field from a device transmitting in the cell can also be detected through the port using a test receiver.

The unique compact and economical design is optimized for medium accuracy measurements beyond the standard TEM Cell frequency range. (Theory of Operation)


Applications

Receiver sensitivity testing
Transmitter Radiated Power Test
EMI EMS tests for small UHF devices
900MHz Pager, Portable Phones, PCS, GSM, WLL, CDMA, DECT, WLAN, PDA



Key Features

Radiation and susceptibility test
A broadband TEM Cell up to 3 GHz
Small Size, Small footprint for Desktop application
High Effective Shielding
Specifically designed for all types of portable phones

Specifications
Electrical  
VSWR: 5060A/D : < 1.7, 400 MHz ~ 3 GHz  5060B    : < 1.7, 100 MHz ~ 3 GHz
Path Loss: 22dB Typical (5060A/D), 25dB Typical (5060B)   
Effective Shielding: > 80 dB, typically 100 dB, Leakage Test (5060A/B) > 50 dB (5060D)
Effective Cell Height: 220 mm
Field Strength at Test Point : 13 dB uV/m at 1 uV input
RS-232C Control Connector: DB9
Field Strength at Test Point :  13 dB uV/m at 1 uV input
Data Connector: DB 25 (5060A/B), DB9 and 100 pin to PCMCIA (5060D)
RF Connector : Type N, SMA 
   
Mechanical  
Dimension : 354(W) x 380(D) x 715(H) [mm]
Door Size : 160(W) x 100(H) [mm]
Weight Total : 19 kg

Theory Of Operation

TC-5060A/B UHF TEM Cell cell is made to work beyond the typical TEM Cell operating frequency range limited by cel resonance. A typical TEM Cell is a 2-port symmetrical device; RF voltage is applied to one port while the other port is terminated in 50 ohm while maintaining 50 ohm characteristic impedance along the cell. Due to expansion and contraction parts of the cell, the wave propagation beyond certain frequency is no more propagated by TEM mode alone and creates resonance. To eliminate the resonance problem, the half of the cell is  replaced by the wave absorbing material. One commercial implementation is G-TEM cell. The size of the G-TEM design is too large for typical small device applications due to the type of absorber used. TESCOM borrowed the concept of G-TEM, but changed the termination implementation scheme, and designed a very compact broad band TEM Cell that can be used on a desktop.

The operation principle of TC-5060A/B is essentially the same as TEM Cell. The E-H field inside the test volume is proportional to the input voltage and inversely proportional to the cell height. If a radiating object is inserted inside the cell, the radiated wave toward input port is guided by the transmission line and picked up at the input with a receiver such as a spectrum analyzer. With this method, the RFI from a radiating Device can be measured quantitatively. Since this apparatus is very broadband, it has many applications in the area of EMI, EMS, receiver sensitivity test, etc.

SPECIFICATIONS SUBJECT TO CHANGE WITHOUT PRIOR NOTICE

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