Products > Bandpass Filter Application > VHF UHF Wireless Microphone
 

 

RF Band Pass Filter for VHF UHF Wireless Microphone


 

 According to the WRC-07 issued by ITU, government arrange 790~862MHz to the mobile radio industry, 

 the so called Digital Dividend, that was one of the major frequency range for PWMS (Professional Wireless 

 Microphone System) in the world, restricts the overall usable frequency range for PWMS.

 To support PWMS having a stable and high quality performance, Temwell flexible Bandpass Filter hlep PWMS 

 user to reject the LTE signal around the world.

 

A. Temwell Filter for PWMS

Fo=700~800MHz BW=50MHz

7H2  series (Double Tuning)

Size: 15.2(L) x7.6 (W) x12.5 (H)

7H3  series (Triple Tuning)

Size: 22.8(L) x7.6 (W) x12.5 (H)

Temwell P/N 

Fo

(MHz)

-3BW

(MHz)

IL

(dB)

Atten

Fo-M

(dBc)

Atten

Fo+M

(dBc)

Temwell P/N 

Fo

(MHz)

-3BW

(MHz)

IL

(dB)

Atten

Fo-M

(dBc)

Atten

Fo+M

(dBc)

TD67766B-(701~750)M 725 40.0 <2.0 120/28 120/20 TT67230A-(701~750)M 730 40.0 <2.5 50/24 50/16
TD67504A-(701~750)M 730 68.0 <2.0 100/18 100/13 TT67505B-(701~750)M 730 54.0 <2.5 100/25 100/20
TD67814B-(751~800)M 775 45.0 <2.0 120/28 120/20 TT67791B-(751~800)M 775 40.0 <2.5 120/44 120/30
TD67513A-(751~800)M 800 75.0 <2.0 150/23 150/15 TT67797B-(751~800)M 775 50.0 <2.0 120/43 120/27
B. Bandpass Helical Filrer for Wireless Microphone 

Fo=165~255MHz BW=8MHz & Fo=775~915MHz BW=30MHz

7H2  series (Double Tuning)

Size: 15.2(L) x7.6 (W) x12.5 (H)

7H3  series (Triple Tuning)

Size: 22.8(L) x7.6 (W) x12.5 (H)

Temwell P/N 

Fo

(MHz)

-3BW

(MHz)

IL

(dB)

Atten

Fo-20

(dBc)

Atten

Fo+20

(dBc)

Temwell P/N 

Fo

(MHz)

-3BW

(MHz)

IL

(dB)

Atten

Fo-20

(dBc)

Atten

Fo+20

(dBc)

TD67282A-(166~195)M 165 >8.0 <2.5 20 25 TT63243A-(165~195)M 165 >8.0 <2.5 38 29
TD67282A-(166~195)M 175 >8.0 <2.5 20 25 TT63243A-(165~195)M 175 >8.0 <2.5 38 29
TD67282A-(166~195)M 185 >8.0 <2.5 20 25 TT63243A-(165~195)M 185 >8.0 <2.5 38 29
TD67282A-(166~195)M 195 >8.0 <2.5 20 25 TT63243A-(165~195)M 195 >8.0 <2.5 38 29
TD6733D-(196~220)M 205 >8.0 <2.5 17 22 TT6761B-(195~220)M 205 >8.0 <2.5 35 30
TD6733D-(196~220)M 215 >8.0 <2.5 17 22 TT6761B-(195~220)M 215 >8.0 <2.5 35 30
TD6735B-(221~245)M 225 >8.0 <2.5 18 25 TT67315B-(220~245)M 225 >8.0 <2.5 35 30
TD6735B-(221~245)M 235 >8.0 <2.5 18 25 TT67315B-(220~245)M 235 >8.0 <2.5 35 30
TD6735B-(221~245)M 245 >8.0 <2.5 18 25 TT67315B-(220~245)M 245 >8.0 <2.5 35 30
TD6735B-(221~245)M 255 >8.0 <2.5 18 25 TT6764B-(245~275)M 255 >8.0 <2.5 30 30

5W2  series (Double Tuning)

Size: 11.2(L) x5.6 (W) x8.6 (H)

5W3  series (Triple Tuning)

Size: 16.8(L) x5.6 (W) x8.6 (H)

Temwell's P/N 

Fo

(MHz)

-3BW

(MHz)

IL

(dB)

Atten

Fo-50

(dBc)

Atten

Fo+50

(dBc)

Temwell's P/N 

Fo

(MHz)

-3BW

(MHz)

IL

(dB)

Atten

Fo-50

(dBc)

Atten

Fo+50

(dBc)

TDW2502B-775M 775 >30 <3.0 18 13 TTW3504B-775M 775 >30 <4.5 30 20
TDW2532B-868M 868 >30 <4.0 16 12 TTW3549B-868M 898 >30 <5.5 30 20
TDW2552B-915M 915 >30 <4.0 22 16 TTW3565B-915M 915 >30 <5.0 26 16
 

 

Fo=380~520MHz BW= 10MHz & Fo=380~520MHz BW=20MHz

7H2 series (Double Tuning)

Size: 15.2(L) x7.6 (W) x12.5 (H)

7H3 series (Triple Tuning)

Size: 22.8(L) x7.6 (W) x12.5 (H)

BW: 10MHz series Fo

IL

BW: 20MHz series Fo

IL

K2B-380M-10M

380

2.5dB

TT6771F-380M-20M

380

2.5dB

K2B-400M-10M

400

2.5dB

TT6778B-(400~455M)-20M

400

2.5dB

K2B-420M-10M

420

2.5dB

TT6778B-(400~455M)-20M

420

2.5dB

K2B-440M-10M

440

2.5dB

TT6778B-(400~455M)-20M

440

2.5dB

K2B-460M-10M

460

2.5dB

TT67491B-(455~515M)-20M

460

2.5dB

K2B-480M-10M

480

2.5dB

TT67491B-(455~515M)-20M

480

2.5dB

K2B-500M-10M

500

2.5dB

TT67491B-(455~515M)-20M

500

2.5dB

K2B-520M-10M

520

2.5dB

TT6777B-(515~555M)-20M

520

2.5dB

5W2 series (Double Tuning) 

Size: 11.2(L) x5.6 (W) x8.6 (H)

5W3 series (Triple Tuning) 

Size: 16.8(L) x5.6 (W) x8.6 (H)

BW: 10MHz series Fo

IL

BW: 20MHz series Fo

IL

TDW2889A-375M-10M

375 3.5dB

TTW3422A-380M-20M

      380 4.5dB

TDW2430B-400M-10M

400 4.5dB

TTW3436A-400M-20M

       400 4.5dB

TDW2434B-420M-10M

420 4.5dB

TTW3433A-420M-20M

       420 4.5dB

TDW2435B-440M-10M

440 4.5dB

TTW3437A-440M-20M

       440 4.5dB

TDW2431B-460M-10M

460 4.5dB

TTW3438A-460M-20M

      460 4.5dB

TDW2432B-480M-10M

480 4.5dB

TTW3439A-480M-20M

      480 4.5dB

TDW2454B-(500~550M)-10M

500 4.5dB

TTW3455B-(500~550M)-20M

      500 4.5dB

TDW2454B-(500~550M)-10M

520 5.0dB

TTW3455B-(500~550M)-20M

      520 4.5dB

PAY ATTENTION: Each Parts No. all has Perf. & Spec. with S2P Data and all has Customized Range to indicate 

your own specific Fo.


Temwell Corporation / Temstron Co., Ltd.

   8F-1,No.51, Sec.1,Min Sheng E. Rd.,Taipei, Taiwan    Tel:886-2-25652500 ( 7 Line )    Fax: 886-2-25515250  /  886-2-25652287    

E-Mail : sales@temwell.com.tw 

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