FIELD: radio engineering.
SUBSTANCE: frequency synthesiser, having a control unit, a first intermediate frequency synthesiser, a second intermediate frequency synthesiser, characterised by that it has a second intermediate frequency phase-locked-loop frequency control (PLLFC) synthesiser, which synthesises a fixed reference frequency, a DDS synthesiser with frequency tuned in the given range, a low-pass filter of the DDS synthesiser, a mixer of the PLLFC synthesiser reference frequency and a DDS synthesiser, whose output frequency is equal to the sum of the reference frequency of the PLLFC synthesiser and frequency of the DDS synthesiser, a band-pass filter for filtering the output frequency of the mixer.
EFFECT: high accuracy of setting the frequency of the receiver and reduced phase noise in the output signal.
5 cl, 2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| BROADBAND FREQUENCY SYNTHESISER | 2011 |
|
RU2450418C1 |
| DEVICE FOR RECEIVING SIGNALS FROM SATELLITE RADIO NAVIGATION SYSTEMS | 1999 |
|
RU2159448C1 |
| SPOT JAMMING UNIT FOR RADIO DETECTION AND RANGING STATIONS | 2006 |
|
RU2329603C2 |
| RECEPTION DEVICE | 2008 |
|
RU2381621C2 |
| METHOD OF HETERODYNE SIGNAL PENETRATION CONTROL IN DIRECT CONVERSION METHODS | 2002 |
|
RU2336626C2 |
| RADIO TELEPHONE SYSTEM FOR REMOTE USER GROUPS | 2004 |
|
RU2341038C2 |
| FREQUENCY SYNTHESISER | 2009 |
|
RU2395899C1 |
| SUPER-HETERODYNE RECEIVER AND FREQUENCY METER | 2004 |
|
RU2279095C2 |
| SHORT-RANGE RADIOLOCATOR WITH ULTRA HIGH RESOLUTION (VERSIONS) | 2007 |
|
RU2362180C2 |
| NEW ARCHITECTURE FOR INEXPENSIVE/LOW POWER ANALOGUE TRANSCEIVER | 2001 |
|
RU2325758C2 |
