dlna450

Teletechnika Engineering Ltd.

Fehér út 10. H-1106 Budapest, Hungary

TEL: (361) 261-7443 FAX: (361) 262-5290

www.teletechnika.hu teletechnika@matavnet.hu

International: http://www.aurimpex.com

Tower Mounted Low Noise Amplifier
DLNA-450

Features

· Increased up-link coverage range.

· Improved Base Station receiver sensitivity.

· Increased handphone battery lifetime.

· Bypass operation mode in case of failure or P.S. outage.

· Local Alarm and Remote Control accessibility.

· Easy installation using the existing B.S. equipment, cable, antenna.

Description

The DLNA-450 tower mounted LNA is a member of the product family developed and manufactured by the TELETECHNIKA Engineering Ltd., where the other members of the product family are operating in the 900 MHz GSM and 1800 MHz DCS bands.

The RF Part of the equipment consists of a high selectivity RF filter and a Low Noise Amplifier (LNA). In order to avoid intermodulation products the LNA possesses a high third order interception point (IP3). The RF Part is in a weatherproof container. Its power supply is performed via the inner conductor of the coaxial cable. The container has to be mounted near the antenna. In the case of failure or power supply outage a bypass circuit assures the way of the received signal.

A Byas-Tee connected to the indoor Power Supply and Alarm Rack is used to decouple the DC from the B.S. equipment. The primary voltage of the rack is -48V, however a 220 V / 50 Hz AC supply can be ordered as an option. Besides the visual local alarm there are relay contacts available for remote control signalling. One rack can supply 2 to 6 outdoor containers depending on the built-in alarm panels.

Technical data

System	NMT-450
Frequency Band (BS RX/Mobile TX)	453 - 457.5	MHz
Temperature Range - Outdoor RF Unit - Indoor units	-30 to +55 0 to +50	⁰C ⁰C
Outdoor RF Unit
Type	DLNA-450
Gain	16 ± 1	dB
Noise Figure (25 ± 5 ⁰C), typ.	2.5	dB
Noise Figure over temperature range, max.	3.0	dB
Bypass mode insertion loss, max.	2.5	dB
Pass-Band Bandwidth (f_min to f_max)	4.5	MHz
Return Loss in Pass-Band, min.	16	dB
Rejection DC to (f_min - 5.5 MHz), min.	50	dBr
Rejection (f_max+ 5.5 MHz) to 1000 MHz, min	55	dBr
Input Power causing no damage, max.	15	dBm
O/P 3-rd order Intercept Point (IP3), min.	30	dBm
Impedance (input, output)	50	ohm
Connectors	N^- or 7/16 (f)
Indoor Equipment
Power Supply and Alarm Equipment
No. of connectable RF Units	2 to 6
Input primary voltage	-48	V
Supply Voltage (via coaxial cable)	+15	V
Current consumption per RF Unit, typ.	150	mA
Current consumption per RF Unit, max.	200	mA
Condition of alarm (bypass status)	failure of the LNA or outage of the power supply
Indication of alarm	built-in test of the DC current consumption
Connection to a remote control system	via relay contacts
DC Bias-Tee
Input Power, max.	50	W
Insertion Loss, max.	0.2	dB
DC Current, max.	2	A
RF impedance	50	ohm
Connectors	N or 7/16

For development purposes manufacturer reserves the rights to make any technical data changes irrelevant to base specifications.

Tower Mounted Low Noise Amplifier DLNA-450

Tower Mounted Low Noise Amplifier DLNA-450

Tower Mounted Low Noise Amplifier
DLNA-450

Tower Mounted Low Noise Amplifier
DLNA-450