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Satellite-IF
Low Pass Filter
 
    Features
 
* CE Approved, Class A RFI Shielding

* SMD, High Stability

* High Rejection

* Low Loss

* Excellent Return Loss

* Waterproof (alternative)

* Patented Housing

* Suitable for SMATV and
  other communication systems
 


    Also Recommended

    Satellite-IF : High Pass Filter

    Satellite-IF : Low Pass Filter

    More ... : Filter series
Introduction

This low pass filter series is designed for use in satellite reception systems to pass FM, TV, CATV and satellite signals and filter out unnecessary frequencies or interference frequencies (e.g. high band satellite signals, WLAN, 802.11, Bluetooth, etc.).

Soontai's low pass filters provide many features (see below).

1. Rejection better than 50dB.

2. Lowest insertion loss, signal-through-loss reduced to a minimum.

3. Excellent return loss, good impedance match reduces signal loss to
    keep the signal clean. (see figure)

4. Dual layer copper tubes provide the best radio frequency interference (RFI) / electromagnetic
    interference (EMI) protection.

We can design other models accroding to your specifications.

For more filter infomation please see the filter profile technical notes in our Tech Support.
Custom filters or more details on inquires, please refer to Custom Filters.

  Items
Model Pass Band Model Pass Band
LPF - 1450 5 - 1450 MHz LPF - 1750 5 - 1750 MHz
LPF - 1800 5 - 1800 MHz LPF - 2150 5 - 2150 MHz
  Electrical Curve ( LPF-1750 )

Insertion Loss  |  Return Loss
SPAN 3GHz
Fig 1

Insertion Loss  |  Return Loss
SPAN 3GHz
Fig 2
  General Specifications
  Item LPF - 1750 LPF - 1750B
  Power Passing DC 30V / 500mA (max) Blocked
  Impedance 75 ohm
  Pass Band 5 - 1750MHz
  Insertion Loss 0.5dB (typ)  /  2.5dB (max)
  Return Loss 20dB (typ)  /  12dB (min)
  Stop Band 2 - 3GHz
  Rejection 55dB (typ)  /  50dB (min)
  Dimensions (incl. M/F connectors) 21(¢) x 57 mm
  Net Weight 48g
  Specifications may be change according to customer's requirements.

 

 
 

SOONTAI  TECH  CO.,  LTD.
No.43, Huangong Rd., Yongkang Dist., Tainan City 710, Taiwan
TEL: 886-6-2016969   FAX: 886-6-2013939   E-mail: soontai@soontai.com