|
Amplifier
Circuits: RF (Radio Frequency)
Page 2
RF (Radio Frequency): #'s
A-C
D-L M-R
S-Z
Amplifier --
Main Page
Last Updated on:
Friday, March 23, 2012 04:35 PM
|
| Circuits Designed
by Dave Johnson, P.E. : |
|
|
|
|
|
Links to electronic circuits, electronic schematics, designs for engineers,
hobbyists, students & inventors:
|
|
|
|
A 300W MOSFET Linear Amplifier for 50 MHz - Application Note
Microsemi-formerly Advanced Power Technology APT9802 ( app note
added 2/07) |
|
A 50 Mhz, 250w Amplifier Using Push-Pull Arf448a/B - Application
Note Microsemi-formerly Advanced Power Technology APT9702A ( app
note added 2/07) |
|
A High-Efficiency 400 Watt 13.56 MHz RF Power Amplifier -
Application Note Microsemi formerly Advanced Power APT9501(added 1/07)
|
|
A Precision Portable Voltage Reference - It has been said that a
man with one watch knows what time it is, but a man with two watches is
never sure. The same can be said for a person who has more than one
voltmeter. In my situation, I have several voltmeters in each of two
different locations a third of the way around the world apart. The best
solution would be to send the meters to NIST traceable calibration
labs,....(schematic / circuit added 6/08) |
|
A Push-Pull 300-watt Amplifier for 81.36 MHz - This article
describes a 300 watt amplifier for 81.36 MHz using a push-pull pair of
plastic packaged devices. The design techniques and construction practices
are described in enough detail to permit duplication of the amplifier.
Application Note Microsemi-formerly Advanced Power Technology APT9801
(App Note added 4/08) |
|
|
|
|
A Simple Method to Reduce DC Power Consumption in CDMA RF Power Amplifiers Through the
LMV225 & an Efficient Switcher - National Semiconductor Application Note
(app note added 6/06) |
|
A Superhet/Direct Conversion AM receiver for 181.818 kHz - This is a
description of an experimental AM receiver for VLF. It is crystal controlled to receive
181.818 kHz (more or less) and operates as either a single conversion superhetrodyne or a
direct conversion receiver. The bandwidths are expected to be 15 Hz to 3.5 kHz in superhet
mode and 15 Hz to 10 kHz in the direct conversion mode. Operation is from a
singler....(added 6/07) |
|
AM Farm Radio Power Supply - Prior to the 1950s, many rural areas in the US had
no electricity. Many companies sold battery operated vacuum tube radios for use in these
areas, the radios are commonly called Farm Radios. Farm radios are often available at very
reasonable prices and can make a good restoration project.... [G. Forrest Cook] |
|
AN-1438: A Simple Method to Reduce DC Power Consumption in CDMA RF Power Amplifiers
Through the LMV225 & an Efficient Switcher - National Semiconductor Application
Note (app note added 6/06) |
|
AN-543: High Quality, All-Digital RF Frequency Modulation Generation with the ADSP-2181 &
the AD9850 DDS - AN-543-Analog Device Application Notes (app note added
6/06) |
|
AN-60-008 Operating precautions for RF Amplifiers - Application Note
MiniCircuits.com (app note added 2/06) |
|
Battery operated FM rebroADCast transmitter - (circuit added 6/07) |
|
BroADCast-Band RF Amplifier - The complete schematic is shown in Fig. 1. The
circuit has frequency response ranging from 100Hz to 3MHz; gain is about 30dB. Field
Effect Transistor Q1 is configured in the common-source self-biased mode; optional
resistor R1 allows you to set the input impedance to any desired value. Commonly, it will
be 50 ohms.…. [Tony van Roon's circuit] |
|
Capabilities Of Low-Cost High Voltage RF Power MOSFETs At Hf & Vhf - Application
Note Microsemi-formerly Advanced Power Technology APTB981 ( app note added 2/07)
|
|
CMOS Logic Inverter Amplifier Characteristics - This chart shows some of the
measured characteristics of three different unbuffered CMOS logic gates, used as voltage
amplifiers. (added 12/04) …. [Designed by David A. Johnson] |
|
Controlling TDMA Timeslot Power Levels using the Esg-D Series, RF Signal Generators -
Aligent App Note (app note added 6/07) |
|
Crystal Radio RF Amplifier - One of the best places to add a transistor to a
simple crystal radio is at the front end in the form of an RF amplifier. The circuit below
is a simple but effective amplifier which will give surprising performance improvement.
This amplifier (electronic Circuit / Schematic added 10/04) |
|
|
|
RF
(Radio Frequency): #'s
A-C
D-L M-R
S-Z |
