Tanta University Faculty Of Engineering Electronics & Electrical Communication Department Challenger...
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Mobile Phone Tanta University Faculty Of Engineering Electronics & Electrical Communication Department Challenger 8 Team
Tanta University Faculty Of Engineering Electronics & Electrical Communication Department Challenger 8 Team Tanta University Faculty Of Engineering Electronics
Tanta University Faculty Of Engineering Electronics &
Electrical Communication Department Challenger 8 Team Tanta
University Faculty Of Engineering Electronics & Electrical
Communication Department Challenger 8 Team
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1- For people who are located in remote places and suffer from
weak signal. 2- It is very useful in cities, where in spite of full
coverage there are places with no or poor signals. 3-Simply plug
our Signal Booster and you'll be astonished by the results.
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Preamplifier Power supply & Charge Battery IR System Power
amplifier AGC BPF [Downlink] [Uplink] Outdoor antennaIndoor antenna
Preamplifier Power amplifier AGC Outdoor antenna Indoor
antenna
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Hanan & Ola Power Amplifier. AGC. Conclusion. Asmaa &
Heba Power Supply. IR Circuits. Exiting Solution. M.Elshrkawy &
Alshimaa GSM. Helical Antenna. Omni Antenna. M.Mahrous &
M.Hakim Block Diagram Preamplifier. BPF. Team work
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Preamplifier Power supply & Charge Battery IR receiver
Power amplifier BPF [Downlink] [Uplink] Outdoor antennaIndoor
antenna Preamplifier Power amplifier AGC Outdoor antennaIndoor
antenna Power Supply
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Its a component of an electronic devices, used for operating
the device wirelessly from a short line- of- sight distance. Remote
control is consumer IR device. Remote ControlIR ReceiverIR
Transmitter
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Preamplifier Power supply & Charge Battery IR receiver
Power amplifier AGC BPF [Downlink] [Uplink] Outdoor antennaIndoor
antenna Preamplifier Power amplifier AGC Outdoor antennaIndoor
antenna Outdoor Ant.
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Obtain different types from polarization linear, circular or
elliptical. Operate in HF, VHF and UHF. Considered as a broadband
antenna. A simple way of obtaining high-gain. Dimensions of the
helix are small compared with the wavelength. The antenna field is
maximum in a plane normal to the helix axis and minimum along its
axis.
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The helix dimensions are at or above the wavelength of
operation. Commonly employed only at frequencies ranging from VHF
up to microwave. Produces a true and consistent circular
polarization. Provides better gain and high bandwidth ratio as
compared to the normal mode of operation. Installed on
communication satellites and space vehicles as well as on earth
station.
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Frequency =900MHZ. Wavelength = 0.33m. NO. of turns =5 turns.
Pitch angle = 14 degrees. Circumference of helix1 Lambda Space
between turns0.08 m Helix diameter0.1 m Length of turns0.33m Axial
length0.4m Antenna gain13.21 dB Half power beam width46 degrees
Beam width at 1st null102 degrees Input impedance140
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Ensures that the max Power is transferred from the outdoor
antenna to the base unit through coaxial cable. Reduce the
impedance of the outdoor antenna using:
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It's electrical cable used to carry RF signal. Large bandwidth
than twisted pair. High data rate. High immunity to
interference.
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For high frequency Connecting TX and Rx with their antennas.
Local Area Network. For low frequency Long distance telephone
transmission. F type connector : Inexpensive. 75 impedance.
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Preamplifier Power supply & Charge Battery IR receiver
Power amplifier AGC BPF [Downlink] [Uplink] Outdoor antennaIndoor
antenna Preamplifier Power amplifier AGC Outdoor antennaIndoor
antenna PreAmplifierPreAmplifier
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In general, the function of a preamp is to amplify a low-level
signal to line-level. DESCRIPTION: Silicon amplifier consisting of
an NPN double poly silicon transistor with integrated biasing for
low voltage applications in a plastic.
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Applications: Wideband applications, e.g. analog and digital
cellular Telephones. High frequency oscillators. Low noise
amplifiers. FEATURES: Low current. Very high power gain. Low noise
figure. Control pin for adjustment bias current. Supply and RF
output pin combined.
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Circuit Diagram:
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Preamplifier Power supply & Charge Battery IR receiver
Power amplifier AGC BPF [Downlink] [Uplink] Outdoor antennaIndoor
antenna Preamplifier Power amplifier AGC Outdoor antennaIndoor
antenna
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Prevent intermodulation in base station receivers. Prevent
interference with other mobile phones using the same booster.
Minimize power consumption. Using the minimum power necessary for
reliable communication with the selected base station, based on
distance.
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1) Power Amplifier: ALM-31122 Fully matched,input and output
with 75 ohm. 16.5 dB gain. 5v supply. Low noise figure. Gain
controlled.
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2) Coupler Its used for the connection between PA o/p and the
RF detector i/P. The amount of coupling also defines the amount of
feedback gain. Converts the PA output voltage into a DC voltage
used for comparison with the DSP value (vref). HSMS-2825 schotty
diode. 3) RF detector
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Difference Amplifier Integrator Offset PA Control - + V dsp 4)
Summer Circuit: + Detector o/p Offset value
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4.1) Difference amplifier Error signal computation can be done
using a difference amplifier. V det=detector o/p Vdsp=desired
signal power level
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4.2) Integrator Difference amplifier. Combined with the
integrator into one operational amplifier, the Differential
Integrator block.
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4.3) Offset 2.8 V TX Enable signals produces the offset
voltage. The PA control voltage is the sum of the integrator output
and the desired offset. The loop is considered closed once the PA
reaches threshold.
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Typical Circuit:
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Preamplifier Power supply & Charge Battery IR receiver
Power amplifier AGC BPF [Downlink] [Uplink] Outdoor antennaIndoor
antenna Preamplifier Power amplifier AGC Outdoor antennaIndoor
antenna
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Omni directional antenna is used as indoor antenna. It's
antenna that radiates equally in all directions. The only three
dimensional Omni directional antenna is the unity gain isotropic
antenna.
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Features: Small and lightweight. No tuning components.
Electrical: Frequency range: 880-960MHZ. Polarization linear. Feed
point impedance 75 ohms. Mechanical: Size: 37.59 x 11.94 x 2.77 mm.
Weight less than 2.5 g. Mounting: surface mounted technology.
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Preamplifier Power supply & Charge Battery IR receiver
Power amplifier AGC BPF [Downlink] [Uplink] Outdoor antennaIndoor
antenna Preamplifier Power amplifier AGC Outdoor antennaIndoor
antenna
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Dual band Amplifier for E-GSM (880 MHz to 915 MHz). Simple
external circuit including output matching circuit. High gain 3
stage amplifier. High efficiency.
Preamplifier Power supply & Charge Battery IR receiver
Power amplifier AGC BPF [Downlink] [Uplink] Outdoor antennaIndoor
antenna Preamplifier Power amplifier AGC Outdoor antennaIndoor
antenna
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Remove unwanted frequency components from the signal. Enhances
Wanted signal. It passes frequencies within a certain range
(880-920 MHZ) and rejects (attenuates) frequencies outside that
range. Frequency response.
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These filters can also be created by combining a low-pass
filter with a high-pass filter. An example of analogue electronic
band-pass filter is an RLC circuit (resistorinductorcapacitor
circuit).
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Pin No.Func. 1Input 2Gnd 3 4Output 5Gnd
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Mini GSM 900 Wilson Cell Phone Booster Kit Wireless Desktop
Cell Phone Booster Kit
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Signal Booster Wireless Desktop Cell Phone Booster Kit Wilson
Cell Phone Booster Kit MR-mini GSM900 Metric Coverage area 50 dB60
dB55 dB60 dBHigh gain 60$190$375$248$Low cost 120 Sec Time to
assemble to desired area Pass World health organization limitation
Yes Has special and distinct shape 12v10v12v10vLow i/p dc
power
