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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