Technologies have moved on a great deal today and engineers
do not have the time any more to review to the level of
detail they did in the past. Trust and speed are two of the
main factors the market demands these days as opposed to the
lengthy sales trips and meetings conducted previously.
Internet purchasing and technical information gathering has
been the major driver for "remote selling" with purchasing
components and sub systems carried out over the telephone or
email. This is reducing the face to face meetings with some
negative effects. dBD Communications pride themselves on
their friendly, professional service and over the coming
months we will be introducing you to members of the dBD
Communications team, this month we would like you to meet
David O'Connell, our Managing Director.
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Rotary Stepped Attenuators |
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Model RSA - 35110D
Features:
- Wide Frequency Range 0-110dB in 1 dB Steps
- High Accuracy Rate
- Price Competitive
- Flexible Design Configurations
Trilithic's state of the art rotary step attenuators
are designed for precision control of signal levels
in the DC to 3 GHz range and are offered in a wide
choice of values and increments. This design allows
for greater automation of assembly.
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Application Note for Power Measurement |
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This is a cost-effective design guide for
incorporating precision power measurement components
into Digital Transmission Systems. Complex RF
Waveforms used in CDMA, DAB, DMB, DTV and HDTV
systems require the use of products that employ
square-law detection circuits, unlike those required
for CW, AM or RM modulated power measurement.
The "Line Sections" are available with either one or
two "sockets". A dual socket design allows for both
Forward and reflected power measurement, while a
single socket would allow one or the other. Within
the sockets are inserted the sensors, typically
called "elements", that are tuned for a specific
Forward or Relected Power range and a Frequency Ban
such as 1000 Watts, 500 Watts, 470 to 608 MHz, 614
to 806 MHz and so forth. This focused Power and
Frequency Band helps to contribute to a greater
overall accuracy compared to broadband measurement
systems. There is no separate directional coupler to
add to measurement uncertainty, cost or procurement
logistics.
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Dual Polarity Antennas UHF RFID and ISM Applications |
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Dual polarity antennas can be very useful for many
specialized applications, where traditional patch
antennas could be prohibitive. For example for
forklift and shelving applications, conveyor
applications and other near to mid-field uses. They
are also particulary useful where the corresponding
tags are in a fixed position with little variation.
As such, the antenna can be place to maximize read
rates.
Specifications
- Frequency:
- DLT3 & DLM3-868 865 - 870 MHz
- DLT3 & DLM3-915 902 - 928 MHz
- Gain: 3 dBi - Dual Polarity
- Bandwith @2.0:1 SWR: See Freq above
- Impedance: 50 Ohm nominal
- Maximum Power: 10 Watts
- Beamwidth: 60deg effective El & Az
- Front-to-Back ratio: 10 dB typical
- Lightning Protection: External recommended
- Antenna Radome: White ABS Standard, black
ABS available upon request
- Mounting: DLT3 Models Flush tape mount
- DLM3 Models Swivel Wall/pole mounting
- Radome Size: 4.5" D x 1" (114mm x 25mm)
- DLM3 Swivel: +/- 45 deg from centre
- DLM3 Standoff: 3 inches (76mm) when set
parallel to wall, to front face
- Weight: 1.1 lbs (0.5 kg)
- Termination: 6 inches RG-58 (152mm)
- Connector: Male SMA
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Next Edition - 31 October |
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Next month meet Amanda O'Connell, our Operations
Director and read about her role in dBD
Communications, and how she spends any greatly
valued free time.
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Introducing David O'Connell
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My involvement in communications goes back to 1979
when I started as a bench technician in Cossor
Electronics where transistors were still seen as new
technology and silicon and germanium junction
comparisons had me studying for hours.
Now with such a fast and furious work environment I
like to break away and coach a local youth rugby
team. Pressure, but from a different environment as
rugby like our industry is changing rapidly. With
the company and rugby there is little time to do
anything else but where I can I like to catch up
with the family and go fishing (fair weather
only!!).
Our Products
The list below is not exhaustive, please contact us
if you require a product not listed as we will
always endeavour to help:
If you require any additional information or you
would like us to provide a quote then please do not
hesitate to contact us. We always endeavour to
exceed our customers expectations.
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