1000 Threads found on edaboard.com: 100 Mhz Amplifier
hiiiiiiiii to all please i need low nois amplifier that cover the range 100 mhz. to amplify the signal that recieve from the antenna in fmcw radar..
Analog IC Design and Layout :: 12-03-2008 07:06 :: eng.j.u.s.t :: Replies: 6 :: Views: 1238
perhaps you can consider splitting the band in two using Avago MGA-30889 and MGA-30789...besides having the target of NF/Gain/IRL/ORL/OIP3/Power budget, for such broad band you ll need to know more a less how flat do you need the response for example on the gain...many MMICs have negative slope on the gain for this band and you may see differences
RF, Microwave, Antennas and Optics :: 08-19-2010 10:19 :: ltrlspree :: Replies: 13 :: Views: 1746
50 hz - 100 mhz rf pree amp general purpose
RF, Microwave, Antennas and Optics :: 04-14-2006 08:00 :: su3mb :: Replies: 0 :: Views: 406
Hi .. is there any GUI based linux for a pentium 1 100 mhz comp. I managed to get hold of a cheap cannon laptop with this config .. I m not sure how much ram it has though.
Linux Software :: 03-08-2007 10:08 :: goosecool :: Replies: 6 :: Views: 1048
my opamp operate with 100 mhz range. Do i need to care about the fliker noise since fliker noise normally less than 1khz?
Analog IC Design and Layout :: 07-04-2007 21:54 :: surianova :: Replies: 4 :: Views: 395
The question is depends on the application of your opamp. If your input is DC or slow, why you need a 100mhz opamp. You can make a very high open loop gain opamp. I believe it is useful for you.
Analog IC Design and Layout :: 07-05-2007 09:50 :: kwkam :: Replies: 4 :: Views: 483
Has anyone got a practicable and simple design for an oscillator , greater that 100 mhz.
please share it.
Analog Circuit Design :: 07-09-2007 10:54 :: mehboob_iiui :: Replies: 2 :: Views: 1204
You could use the DCM or just multiply the clock, and another way to multiply the 50mhz clock to 100mhz is to use "XOR". Of course, DCM's the recommended way.
PLD, SPLD, GAL, CPLD, FPGA Design :: 09-20-2011 04:42 :: rockybc :: Replies: 5 :: Views: 1588
Looking for a schematic of a discrete circuit to drive the transformer in a 100 mhz Ethernet system. Needs to convert logic signals to the +1, 0, and -1 levels compatible with standard Ethernet. I just need the actual drive portion - not interested in a complete PHY component as processing is handled separately. All the chips I have located have wa
Analog Circuit Design :: 08-23-2010 11:55 :: splevy :: Replies: 0 :: Views: 670
I regularly use 74AHCT series for 3.3 to 5V level conversion, preferably 74AHCT1G125 single gate devices. They are specified with a typical propagation delay of 3.4 ns (with 15 pF load) and good symmetry.
To interface a symmetrical clock of 2.7Vpp to 5V CMOS, capacitive level shifting with 2.5V bias would also keep the threshold requirements.
Analog Circuit Design :: 07-14-2011 02:47 :: FvM :: Replies: 5 :: Views: 1035
Many people (myself included) use a Colpitts-type resonant circuit with a series LC (resonant slightly below the desired oscillation) in series with the emitter of the oscillator transistor to suppress the B-mode oscillation. The advantage of this and related methods is that it doesn't need to add significant loss. I find this specific arrangemen
RF, Microwave, Antennas and Optics :: 09-28-2011 15:39 :: stromer :: Replies: 1 :: Views: 454
hi everybody i have designed a patch antenna in HFSS for 100 mhz i am getting fine RL at 100 mhz but the other antenna parameters gain, directivity etc. are not quite well , i am unable to understand this problem can anyone help me in this regard please, my email id in firstname.lastname@example.org, if any expert is interested (...)
Electromagnetic Design and Simulation :: 04-10-2012 10:25 :: mohsin0997 :: Replies: 0 :: Views: 477
How would I go about matching this transistor to 50ohm, let say around 100mhz? I ask because the only impedance information on the datasheet is at 136mhz+.
Many thank in advance
RF, Microwave, Antennas and Optics :: 05-17-2004 13:33 :: VT1 :: Replies: 1 :: Views: 898
I am designing an amplifier at 2.45 GHZ (center frequency) using 0.35 ?m technology, but I have a lack of resources.
The amplifier has a span about 100 mhz around the previous center frequency.
It should have a gain about 20 dB to drive a 50 Ohm load.
Can anyone direct me to the good resources about such topics (...)
Analog Circuit Design :: 05-06-2005 12:55 :: eng_Semi :: Replies: 2 :: Views: 590
It may be impossible to find a commercial quartz oscillator running directly at 200 mhz. But I saw some 100 mhz versions with TTL output. Then use a frequency doubler afterwards.
Good frequency doublers are available from Mini-Circuits. You can also use a diode pair doubler and a 200 mhz amplifier to (...)
Analog Circuit Design :: 09-14-2010 16:02 :: jiripolivka :: Replies: 1 :: Views: 1150
What does mean 20 mhz? I see text that 20 mhz,50 mhz,100 mhz on oscyloscopes.
Electronic Elementary Questions :: 09-02-2005 13:18 :: ash :: Replies: 1 :: Views: 1087
Seems that the low freq. end of S21 has about 10dB atten instead of the 17 dB gain.
My opinion is, that some (low freq transmission) circuit element (series capacitor, shunt inductor, etc) is the main problem, because at about 100 mhz the circuit should work, except if some above mentioned problem happens.
Other possibility (as mentioned above) o
RF, Microwave, Antennas and Optics :: 01-26-2007 09:03 :: g579 :: Replies: 6 :: Views: 1635
Can anyone please share a track and hold amplifier circuit design/schematic?
I need one with the following specs:
output swing: 1.2V p-p
gain: 6 dB
THD > 70 dB @ approx. 100 mhz
power as small as possible
no restriction on opamp architecture
any design, even close to these specs would do. i (...)
Analog Circuit Design :: 09-24-2007 17:50 :: Aircraft Maniac :: Replies: 1 :: Views: 975
A gain of 100dB is 100,000 times the voltage.
An FM radio receives 100mhz but it uses an oscilllator and mixer to reduce the signal to the IF frequency of 10.7mhz where an IC amplifies it many times.
Since FM radio signals are usually small the RF amplifier uses a small amount of AGC (...)
Analog Circuit Design :: 02-27-2009 16:23 :: Audioguru :: Replies: 2 :: Views: 684
I have a question regarding the findings of the values of the decoupling capacitors.I have my frequency as 100 mhz..
Should I just take Xc as 50 ohms and calculate..?
Should it be of same value at both the input and the output?
Thanks in advance
Added after 6 min
RF, Microwave, Antennas and Optics :: 04-28-2009 11:31 :: santom :: Replies: 3 :: Views: 1039
Does anyone have any material for an amplifier design that will work in 300-900 mhz range. Input to the amplifier will be +10dBm and I need minimum 1W of output power. I don't need much performance so a simple circuit would be great. (Noise,distortion is not important).
Thank you all. :D
RF, Microwave, Antennas and Optics :: 05-23-2010 09:04 :: eee100 :: Replies: 2 :: Views: 799
Hi everybody, I'm having a little troubling simulating the harmonic distortion for a MOSFET differential amplifier with ADS. I am trying to calculate HD2, HD3, and the point at which the apparent gain drops by 1dB all for a 50mV signal at 100 mhz. I set up the circuit and added the Harmonic Balance simulation block and set it up everything (...)
Software Problems, Hints and Reviews :: 10-14-2010 01:29 :: gotenks326 :: Replies: 1 :: Views: 1107
First thing is to post the cct , difficult to help when we've got no idea what you have done.
---------- Post added at 13:04 ---------- Previous post was at 11:19 ----------
First off I don't think the GBW of that opamp is up to the job. You won't get a gain of 100 at 20mhz.
If the output is always -48mV --
Analog Circuit Design :: 05-23-2011 07:04 :: neddie :: Replies: 3 :: Views: 757
Hello I need to make a transistor amplifier which has a voltage gain of 15 at 100 mhz. I have the BFR520 NPN wide band transistor (fT = 9 GHz).
1. Is it possible to make this amplifier using general calculations (by calculating RB1, RB2, RE, RE for common emitter amplifier) or do I have to go for an (...)
Analog Circuit Design :: 09-09-2012 09:20 :: dumindu89 :: Replies: 1 :: Views: 364
I have a two stage complementary amplifier circuit constructed by CMOS 90nm. Three figures are attached. The first one is the schematic of the amplifier, and the second one is the location of the poles and zeroes of the circuit in an s-plane.
Fig. 1: Schematic
Fig. 2: s-plane
Analog IC Design and Layout :: 02-14-2013 07:18 :: Majid Rafei :: Replies: 0 :: Views: 269
For high frequency RF amps (Fc> 100 mhz), the aerial is normally connected by a bit of Coaxial cable that matches the aerials impedance -in the range 50-75 ohms. In this case you still want a voltage amplifier, but if the device is matched to the low impedance, then extra gain or linearity can be got at no no expense, such as using a (...)
Analog Circuit Design :: 07-31-2013 11:55 :: chuckey :: Replies: 4 :: Views: 344
The complex modulations used today are looking for higher BWs than 10 mhz (even up to 100 mhz).
This would be really a challenge for Envelope Tracking approach, which anyway has its own problems at even lower BW than 10 mhz (like failing TX Output RF Spectrum, and TX Noise Power in RX band).
RF, Microwave, Antennas and Optics :: 11-10-2013 09:57 :: vfone :: Replies: 5 :: Views: 481
I am designing 100 mhz scope + 100 mhz logic analyzer on USB bus. In future, I plan use FireWire interface for data exchange between board and PC. I think it is better idea then use slow COM port
Other Design :: 03-26-2002 01:36 :: dacadc :: Replies: 12 :: Views: 10792
Does anybody know details about the availability of 100 MIPs xx51 uControllers ?
Don't be confused with a 100mhz xx51 uC.
Microcontrollers :: 11-06-2003 05:41 :: roli :: Replies: 2 :: Views: 789
You may use 1N34 but measuring result will be reduced at higher frequencies above 100mhz up to 1GHz. Diode is point contact diode and was intended for usage at lower frequencies, I think.
RF, Microwave, Antennas and Optics :: 03-21-2004 01:56 :: Borber :: Replies: 10 :: Views: 3654
I want to make about following parameters amplifier :
I need relating information:
- the influence of temperature on parameters the VDMOS, LDMOS.
- the selection of transistors (what firm ???)
- on what was one should be careful,
I found the solution firms polyfet,
RF, Microwave, Antennas and Optics :: 11-03-2005 16:29 :: jarys :: Replies: 0 :: Views: 455
I'd like to build kind of communication system.
I've got many things working at 77 GHz for Automative but the problem is IF frequency is up to 100 mhz only.
Any source for components at 5.8 GHz like oscillator and modulator ??
RF, Microwave, Antennas and Optics :: 03-10-2006 04:13 :: abuantenna :: Replies: 2 :: Views: 854
The Opamp parameters are decided by:
1. Gain - should be very high. If the gain error is expected to be around 01% or 0.01, then the gain for an N-bit DAC should atleast be 2^N*1/Gain Error. So for a 8 bit DAC, the gain should be about 2^8*100 = 128*100 = 12800 or about 80 dB. High gain would also reflect into lower input referred
Analog Circuit Design :: 04-24-2006 05:37 :: Vamsi Mocherla :: Replies: 1 :: Views: 766
What Frequency are you using?
What power do you want at 100 meters?
What is your DC rails?
I would google your requirements.
RF, Microwave, Antennas and Optics :: 05-03-2006 18:58 :: Element_115 :: Replies: 12 :: Views: 1402
I am designing a tuned common emitter RF amplifier at about 100 mhz.
How does one match the high collector output impedance to a low load resistance?
I did a simulation and the collector impedance is rather large, about 100 kohm. How do you match this to say a 50 ohm load?
Is it necessary really to match the (...)
RF, Microwave, Antennas and Optics :: 07-03-2006 21:50 :: arebee :: Replies: 4 :: Views: 1063
if i'm true - the FM is ~100 mhz and AM is ~1mhz....
20 cm wire is capacitance ~2pF +~mOhms resistors at 1mhz and ~Ohms resistors at 100mhz
Your need high impedance input amplifier to get voltage from such antenna at 1mhz and You can use 50 Ohm input (...)
RF, Microwave, Antennas and Optics :: 10-06-2006 05:27 :: Grig :: Replies: 1 :: Views: 712
I have a doubt in the Book "Design of Analog CMOS Integrated Circuits" by Behzad Razavi
Chapter 8 Page 253 Figure 8.10
Cascade of two 100 mhz feedback apmlifiers able to provide faster response
as shown in the figure 8.10(Left) what will happen if we choose f 3db = 100mhz for 20 mhz (...)
Analog IC Design and Layout :: 10-24-2006 02:54 :: Robinenemy :: Replies: 2 :: Views: 1292
I'm just looking for the all-in-one device suitable for every purpose buffer amplifier with high bw (bw >100 mhz) for driving high loads (< 100R) at a voltage of 5Vpp .
I already found a nice discussion at diyaudio comparing BUF634, HA5002 and several other devices.
Analog IC Design and Layout :: 03-08-2007 09:08 :: Snubnose :: Replies: 2 :: Views: 527
The linear design with s2p files for Q1/Q2 is using a bias of VCE = 4.78 V, IC = 9.81 mA for Q1 and VCE = 10 V(?), IC = 16.5 mA for Q2. But the bias in the real circuit seems to give approx. VCE = 3.5 V, IC = 11.5 mA for Q1 and VCE = 4.3 V, IC = 21 mA for Q2. This should be easy verified using a voltmeter. Incorrect bias gives different S-paramete
RF, Microwave, Antennas and Optics :: 03-31-2007 20:03 :: VSWR :: Replies: 5 :: Views: 619
How to generate a 48 mhz clock from a 100 mhz clock?
PLD, SPLD, GAL, CPLD, FPGA Design :: 11-19-2007 01:46 :: altair_06 :: Replies: 8 :: Views: 1668
I need design of some class AB or C power amplifiers (10 Watt) for <100 mhz
1) what companies produce transistors?
2)what practical considration needed?
3) have you any document or picture of power amplifier at this bands?
RF, Microwave, Antennas and Optics :: 07-21-2008 07:43 :: has_ajam :: Replies: 1 :: Views: 544
I am having trouble with this question
Design a PMOS load common source amplifier to provide a gain of 40db and unity gain frequency of 100 mhz
I have tried a combination of gm/Id and hit and trial and am unable to meet both the constraints.
Analog Circuit Design :: 10-26-2008 14:32 :: Srikant Rao :: Replies: 1 :: Views: 658
I would like to ask one question:
when i check the stability of CMBF loop. There is peak shows in both loop gain and phase margin plot. I can not know the reason. Could you help me ?
As the peaks occur at relatively high frequencies (100 mhz region) it seems to be a result of parasitic capacitive feedbacks. But - is
Analog Circuit Design :: 03-12-2010 06:20 :: LvW :: Replies: 9 :: Views: 2338
I am having a 100 mhz Clock, I have to design a Clock of 33.3 mhz With and Without 50% duty cycle.
ASIC Design Methodologies and Tools (Digital) :: 07-11-2009 07:42 :: spartanthewarrior :: Replies: 1 :: Views: 950
The load won't have the said impedance over the full 10 to 100 mhz range. (Near to technically impossible). You also didn't tell, if
the PA is standard 50 ohm or different.
A VWSR instrument is the best method to check the matching condition over the full frequency range.
RF, Microwave, Antennas and Optics :: 04-08-2010 01:30 :: FvM :: Replies: 4 :: Views: 765
Is it feasible to achieve 1 mhz cut-off frequency through sallen-key active RC filter on chip?
If possible, what should the minimum order of the filter be?
Added after 2 hours 36 minutes:
One More question regarding SK filter: What kind of stability issues one might encounter while d
Analog Circuit Design :: 05-17-2010 02:07 :: LvW :: Replies: 3 :: Views: 556
100Hz is the unity gain frequency of the open loop gain of the amplifier or it's -3dB frequency?
Analog Circuit Design :: 06-19-2010 01:49 :: sutapanaki :: Replies: 7 :: Views: 1577
Reading the said other post, it seems to me, that the present discussion is more or less useless. One more bad cross posting example. I still keep my opinion, that litz wire usage can be meaningful for 10 or 100 mhz range, but most likely not for waveguide transition or transmission line design in generally.
RF, Microwave, Antennas and Optics :: 08-06-2010 05:52 :: FvM :: Replies: 8 :: Views: 1504
Does anyone have low power 27mhz amplifier (working below 9V Vdd) ( for transmit signal up to 100m). I found MIC919. IS this okie for this application
THank for reading
Analog Circuit Design :: 09-16-2010 01:02 :: bkd :: Replies: 17 :: Views: 1884
100 mhz signal bandwidth normally implies 50 ohm impedance matching. 12V can mean 12 V into 50 ohm load (12 Vrms, Vp or Vpp ?) or 12 V unloaded output voltage. Depending on the intended generator output waveform, a more detailed amplifier specification should be given. E.g. do you need DC capability?
RF, Microwave, Antennas and Optics :: 10-10-2010 13:23 :: FvM :: Replies: 6 :: Views: 2518