Inside Gigaset Repeater (1890-1900Mhz)

 

Gigaset Repeater 1st. generation (main PCB)

 

 

closeup RF part (DECT Gigaset Repeater)

1. vertical antenna No.1 (PCB)

2. vertical antenna No.2 (not in picture) (PCB)

3. Pin-Diode (Diversity switch)

4. bias for antenna 1 or 2

5. main power amplifier

6. BP network (( .42 ))

7. RX LNA

8. LMX3161 single chip radio transceiver, contains phase locked loop (PLL), transmit and receive functions. The transmitter includes a frequency doubler, and a high frequency buffer. The receiver consists of a 2.0 GHz low noise mixer, an intermediate frequency (IF) of 110 MHz. more on http://www.national.com/pf/LM/LMX3161.html 

9. EPCOS B8105L GMSK SAW interdigital network for 110.592 Mhz operation.

 

Gigaset Repeater 2nd. gerneration Main PCB

1. phone plug

2. voltage regulator LM317 ( 1.25 - 37 V @ 1.5 A )

3. National Semiconductors SC14402DRVJG base band processor optimized for GAP handset, TDMA controller that handles all physical layer slot formats and radio control. Integrated GMSK modulator. More info's on http://www.national.com/pf/SC/SC14402.html

4.SST 29LE010 1Mbit /( 128K * 8 ) 'Page Mode Eeprom 

More info's on http:/www.metatech.com.tw/datasheet/sst/standard_mem_pdf/304-29xE010-3-DS.pdf

5. XTal 10.368 Mhz

6. Microchip 24LC16B / ( 16K 2.5 V I²C Bus Serial EPROM

 

closeup RF part (DECT Gigaset Repeater)

1. vertical antenna No.1

2. bias coil from Pin-Diode to ground

3. vertical antenna No.2

4. Pin-Diode switch

5. funny Smilie 

6. BP network

 

7. ITT 2205AF power amplifier +27db/m @ 3.6 V TSSOP  (( there's only a datasheed available from www.ChipDocs.com , but i haven't got a membership there ))

8. ALPS VCO E-622A ..??? i couldn't find a datasheed so far.

9. LMX3161 single chip radio transceiver, contains phase locked loop (PLL), transmit and receive functions. The transmitter includes a frequency doubler, and a high frequency buffer. The receiver consists of a 2.0 GHz low noise mixer, an intermediate frequency (IF) of 110 MHz. more on http://www.national.com/pf/LM/LMX3161.html 

10. BP network like ( 6 )

11. GMSK network from IF of 110.,592Mhz