Thank you Robin for hint. This is serious reason to use ADF. I think that a bit possible 2..3dB difference in noises at 0.6MHz ofset isn't big advantage. Other hand, I see that HMC has twice lower VCO sensitivity and better noises of dividers and than a seems a bit better. So, I'll try to design both variants on time and then will see.
Best regards, Andrey Sviyazov.
20 марта 2012 г. 0:49 пользователь Robin Coxe coxe@close-haul.com написал:
** I haven't done a detailed comparison of the specs (I believe that they are similar). The one advantage of the ADF4350 is that there is already UHD support for it since this part is on the WBX and SBX Ettus daughtercards.
*From: * Andrey Sviyazov andreysviyaz@gmail.com *Date: *Tue, 20 Mar 2012 00:45:35 +0400 *To: *Robin Coxecoxe@close-haul.com *Cc: *Alexander Chemerisalexander.chemeris@gmail.com; Jean-Samuel Najnudel - BJT PARTNERS SARLjsn@bjtpartners.com; < gsm-internal@lists.fairwaves.ru>; Project Mayotte< project-mayotte@sysmocom.de> *Subject: *Re: Selectivity improvement solutions proposal for UmTRX
Ok. Anyway, it will be much faster then request of samples from Moscow. Sorry regarding ADF4350 parameters, I mixed up it with ADF4360. What do you think about ADF4350 and HMC830 differences and usability?
Andrey.
20 марта 2012 г. 0:14 пользователь Robin Coxe coxe@close-haul.comнаписал:
OK, I'll send the chips directly to Andrey. The Hittite guy didn't say exactly when he'd have the samples. They usually insist on delivering them in person and it may take a week or so before he shows up.
2012/3/19 Andrey Sviyazov andreysviyaz@gmail.com
Ok, no problem. My home address:
Vilora Trifonova str., house 6, app. 45, Krasnogorsk сity, Moscow region, 143400, RUSSIA. Andrey Sviyazov. mobile: +7-916-828-7758.
19 марта 2012 г. 23:05 пользователь Alexander Chemeris < alexander.chemeris@gmail.com> написал:
Andrey,
2012/3/19 Andrey Sviyazov andreysviyaz@gmail.com:
Alexander, if you know faster way, let use it. Other hand, I need at least one week for RF-board design and 3-4 days
for
PCB production and delivery to my office. So, there are two weeks for EMS.
DHL will be faster. But then it's better to ship to your address, as I will not be in Moscow the whole next week. Send you address to Robin, plz.
-- Regards, Alexander Chemeris. CEO, Fairwaves LLC / ООО УмРадио http://fairwaves.ru
-- Robin Coxe | Close-Haul Communications, Inc. | Boston, MA +1-617-470-8825