A well-received trading update from the wireless products specialist Filtronic gives the technology hardware and equipment sector a lift.The company said trading in the first quarter has picked up from the weak final quarter of last year, though conditions remain difficult overall. Sales are running at around £1m per month.Top performing sectors so far todayTechnology Hardware & Equipment 596.69 +4.17%Personal Goods 17,268.76 +2.63%Fixed Line Telecommunications 1,995.84 +2.38%Aerospace and Defence 3,252.32 +1.93%Real Estate Investment Trusts 1,868.81 +1.44%Bottom performing sectors so far todayGas, Water & Multiutilities 4,426.36 -0.40%Mobile Telecommunications 3,708.85 -0.27%Real Estate Investment & Services 1,443.17 -0.23%Insurance (non-life) 1,501.55 -0.10%