Home |
Search |
Today's Posts |
#1
|
|||
|
|||
poor man's network analyzer ??
Looking for suggestions / construction articles on how to make a "poor man's network analyzer" for the HF frequency range by using either an I/Q demodulator chip or else a precision phase & gain measuring chip like the AD8302. I would swear that I had seen an article on this topic someplace, about a year ago. But I've lost the article, and I just spent several hours of fruitless Internet searching. Thanx in Advance! john w. |
#2
|
|||
|
|||
poor man's network analyzer ??
"john w." wrote in message oups.com... Looking for suggestions / construction articles on how to make a "poor man's network analyzer" for the HF frequency range by using either an I/Q demodulator chip or else a precision phase & gain measuring chip like the AD8302. I would swear that I had seen an article on this topic someplace, about a year ago. But I've lost the article, and I just spent several hours of fruitless Internet searching. Thanx in Advance! john w. See the Kanga site for the W7ZOI analyzer: http://www.bright.net/~kanga/kanga/w...m_analyzer.htm W4OP |
#3
|
|||
|
|||
poor man's network analyzer ??
In article .com,
john w. wrote: Looking for suggestions / construction articles on how to make a "poor man's network analyzer" for the HF frequency range by using either an I/Q demodulator chip or else a precision phase & gain measuring chip like the AD8302. I would swear that I had seen an article on this topic someplace, about a year ago. But I've lost the article, and I just spent several hours of fruitless Internet searching. Thanx in Advance! john w. Vector network analyzer: http://www.tapr.org/kits_vna.html?PH...75d27069f2 44 0fa7 Or, if you can't hack fine-pitch boards, you can buy it assembled and tested: ($655) http://radio.tentec.com/Amateur/vna measurements: S21 Magnitude: gain or loss of two-port network from input to output. S21 Phase: the transfer phase of two-port network from input to output. S11 Magnitude: return loss of one-port or two-port network referenced to input of the network. S11 Phase: the phase angle of return loss of one-port or two-port network referenced to input of network. Specifications Frequency Range: 1 MHz-100 MHz at full specification. Operational with degraded performance up to 120 MHz and down to 200 kHz. Resolution: ..1 dB for amplitude measurements 1 degree for phase measurements Dynamic Range: in forward mode, 80 dB at lower frequencies 75 dB mid-range and higher frequencies In reverse mode, -35 dB at lower frequencies -25 dB at mid-range and higher frequencies Output Power: nominal +3 dBm (approx. 2 mw) at TRANSMIT connector Maximum Input Level: +10 dBm (2 V P-P) into TRANSMIT or RECEIVE connector. Requirements for host PC: Windows 98SE, 2000 or XP. Also requires Windows installer program and .NET 1.1 framework (provided on CD) run time package. Not as good as the Agilent box I have in the lab, but the Agilent box costs more than my car... -- Namaste-- |
#4
|
|||
|
|||
poor man's network analyzer ??
"artie" wrote in message ... In article .com, john w. wrote: Looking for suggestions / construction articles on how to make a "poor man's network analyzer" for the HF frequency range by using either an I/Q demodulator chip or else a precision phase & gain measuring chip like the AD8302. I would swear that I had seen an article on this topic someplace, about a year ago. But I've lost the article, and I just spent several hours of fruitless Internet searching. Thanx in Advance! john w. Vector network analyzer: http://www.tapr.org/kits_vna.html?PH...75d27069f2 44 0fa7 Or, if you can't hack fine-pitch boards, you can buy it assembled and tested: ($655) http://radio.tentec.com/Amateur/vna Not as good as the Agilent box I have in the lab, but the Agilent box costs more than my car... -- Namaste-- And not nearly as good as the N2PK VNA: http://users.adelphia.net/~n2pk/ W4OP |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
N2PK Vector Network Analyzer | Homebrew | |||
Where to find: 2-250 MHz Synthesized Network Analyzer Project | Swap |