LE005-R2 Mode-UV Linear Transponder William Leijenaar,PE1RAH

About myself: Name : Callsign : Occupation : HAM interrest: Membership : William Leijenaar PE1RAH (The Netherlands) RF Development Engineer NXP Semiconductors The Netherlands (CATV Hybride module designer) Designing linear transponders for AMSAT community. Member of AMSAT-NA

William Leijenaar, PE1RAH About Linear Transponders: For user: Many users at same time Many modes (CW, SSB, FM, RTTY, SSTV……..) – Different mode at the same time For Satellite: Difficult to design (need great RF experience) – Must be linear under every condition More expensive to make – Need special components (Crystal filters) – Need many stages  Need many components

William Leijenaar, PE1RAH My ham activities: Indian VO-52: Dutch transponder design Launched May 2005 Operational in orbit

William Leijenaar, PE1RAH My ham activities: AMSAT-DL: P3e Mode-UV transponder design (100% tested and working, not selected  SDR option)

William Leijenaar, PE1RAH My ham activities: LE002-R1 – VO-52 size Mode-UV Linear Transponder - Difficult to make  many tuning - Stability problems - Not many launch options  Only for bigger satellites ** Project has been stopped **

William Leijenaar, PE1RAH My ham activities: LE005-R2 – CubeSat size Mode-UV Linear Transponder Design criteria: - Must fit single CubeSat size - 3.7Vdc power supply - Fully programmable - Design with no tuning

William Leijenaar, PE1RAH LE005-R2 in detail: Total size 9cm x 9cm x 0.5cm – (Included mounting strip) Transponder in CubeSat model -Transponder needs very small space - Good secondary CubeSat payload

William Leijenaar, PE1RAH LE005-R2 in detail: Power supply = 3.7Vdc - One cell Li-Ion - E.g Cell-phone battery

William Leijenaar, PE1RAH LE005-R2 in detail: Programming option: - All frequencies - Beacon message - Beacon power ** MSP430 **

William Leijenaar, PE1RAH LE005-R2 in detail: Demo board available: For easy testing Features: 5…15Vdc input voltage 3.7Vdc regulator included All connectors SMA Demo board can also be use as terrestrial transponder For example on mountain

William Leijenaar, PE1RAH LE005-R2 in detail: Complete system example:

William Leijenaar, PE1RAH LE005-R2 features: Input frequency: Output frequency: Output power: Supply voltage: Current standby: Current when DX: Protections: Size: Weight: Onboard CW Beacon: Optional: 70cm (Frequency is programmable) 2m (Frequency is programmable) +23dBm PEP (single tone) +3.7Vdc 650mA 760mA - Low voltage switch off - High current fuse 9cm x 9cm x 0.5cm < 30grams Freq, Message, Power  programmable External ref osc, LNA tap, IF tap

William Leijenaar, PE1RAH LE005-R2 small missions: The transponder weight < 30 grams Balloon missions Flying on kite CubeSat projects

William Leijenaar, PE1RAH LE005-R2 with higher output power: M57727 PA Module 2m output 40W70cm input LE005-R2

William Leijenaar, PE1RAH LE005-R2 in U/S mode example: V S 2.3GHz output 70cm input 2m to 13cm up-converter LE005-R2

William Leijenaar, PE1RAH Thank you for your interrest Hope to meet you on the satellites