Microcontrol

Monday, June 4, 2018

Radio Microwave Antenna NSMA Pattern

Radio Microwave Antenna NSMA Pattern

For Radio Microwave Path Calculation

This section would describe NSMA Pattern for Microwave antenna Path Calculation Software or Application like PathLoss, which able to summaries as table below.
Microwave Antenna Electrical detail
Field Name Length (Char) Head Value Character Before Value Guide Value
Revision Number 42 REVNUM :, NSMA WG16.99.050
Revision Date 16 REVDAT :, 19990520
Antenna Manufacturer 42 ANTMAN :,
Model Number 42 MODNUM :,
Pattern ID Number 42 PATNUM :, File Name
Description1 80 DESCR1 :,
Description2 80 DESCR2 :,
Description3 80 DESCR3 :,
Description4 80 DESCR4 :,
Description5 80 DESCR5 :,
Date of data 16 DTDATA :, 19911219
Low Frequency (MHz) 21 LOWFRQ :,
High Frequency (MHz) 21 HGHFRQ :,
Gain Units 15 GUNITS :, DBI/DBR
Low-band gain 12 LWGAIN :,
Mid-band gain 16 MDGAIN :,
High-band gain 12 HGGAIN :,
Mid-band Az Bmwdth 16 AZWIDT :,
Mid-band El Bmwdth 16 ELWIDT :,
Connector Type 80 CONTYP :, UDR84 PDR84
VSWR 13 ATVSWR :,
Front-to-back Ratio(dB) 10 FRTOBA :,
Electrical Downtilt (deg) 16 ELTILT :, 0
Port-to-Port Iso (dB) for dual Pole 12 POTOPO :,
Antenna Length (m) diameter for Parabolic 14 ANTLEN :,
Antenna Width (m) diameter for Parabolic 14 ANTWID :,
Antenna Weight (kg) 16 ANTWGT :,
Future Field 80 FIELD1 :,
Pattern Type 16 PATTYP :, ENVELOPE
# Pattern cuts 11 NUMCUT :, 4

Mention to Microwave Antenna curve in NSMA would have format as below

Microwave Curve Starting Here
Field Name Length (Char) Head Value Character Before Value Guide Value
Pattern Cut 11 PATCUT :, AZ
Polarization 15 POLARI :, H/H
# Data Points 13 NUPOIN :,
X,Y do not put this value into pattern file
-180,-60
...,...
180,-60
Field Name Length (Char) Head Value Character Before Value Guide Value
Pattern Cut 11 PATCUT :, AZ
Polarization 15 POLARI :, H/V
# Data Points 13 NUPOIN :,
X,Y do not put this value into pattern file
-180,-60
...,...
180,-60
Field Name Length (Char) Head Value Character Before Value Guide Value
Pattern Cut 11 PATCUT :, AZ
Polarization 15 POLARI :, V/V
# Data Points 13 NUPOIN :,
X,Y do not put this value into pattern file
-180,-60
...,...
180,-60
Field Name Length (Char) Head Value Character Before Value Guide Value
Pattern Cut 11 PATCUT :, AZ
Polarization 15 POLARI :, V/H
# Data Points 13 NUPOIN :,
X,Y do not put this value into pattern file
-180,-60
...,...
180,-60

After finish Microwave Antenna curve in our application would show as picture below


Thursday, May 17, 2007

MCS-51 Temperature and computer control

Worthwhile micro-controller use AT89C2051 Hardware detail as below
1. Port P1.0-P1.4 connect to Relay drive ULN2003
2. P1.5-P1.7 check input signal 12VDC
3. Int0 connect to temperature sensor DS1820
4. Rx Tx connect RS232 circuit

Mention to Keil C programming code work properly detail as below





Sunday, May 6, 2007

Worth-While Temperature controller concept

Temperature controller with variety application
example
-
hatchery









As the picture show temperature control including
1. computer software make us able to do automatic temperature control or manual control, which software control make us minimize micro-controller hardware cost
2. Small Microcontroller with additional digital temperature sensor and water level checker assist accuracy temperature control

3. Small Application software operate in Windows ME and Linux, which make us use worth-while old computer